SPM15 Series

www.murata-ps.com

Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters

Typical unit

FEATURES

PRODUCT OVERVIEWWide range input voltages 9-36 and 18-75 Vdc

The SPM15 series isolated DC-DC converters
represent the next generation in Industrial Potted
Module Technology. Featuring a full 15-Watt output
in one square inch of board area, the SPM15 series
isolated DC-DC converter family offers efﬁcientregulated DC power for printed circuit board
mounting. The 1˝ x 1˝ x 0.41˝ (25.4 x 25.4 x 10.41mm) converter accepts a wide range of input voltages, ideal for industrial applications.


1˝ x 1˝ x 0.41˝ Dimensions.

Adjustable Vout (+10% to -10%)

High Efﬁciency
Positive & Negative logic, Remote On/Off
control OptionMonotonic startupContinuous Short Circuit protectionOver-temperature protectionOver-Voltage protection
Low output ripple and noiseStrong thermal derating characteristics

Intended target markets include transportation,
medical systems, electronic test equipment, industrial processing equipment, industrial applications
where power modules must meet rugged environmental requirements, high power density, andwhere isolated output voltages are required. These

converters offer a feature/option set including:through-hole mounting, positive or negative logic(remote on/off), over-current & over-temperature
protection, under-voltage lockout. The input voltage
range covers the standard Industrial requirementswith a regulated output voltage and power rating
up to 15W.
Modules provide voltage isolation (basic
insulation) from input to output of up to 1600V. The
Operating Ambient Temperature Range is -40°C
to +85°C.The Module delivers full output power
to +70°C with no airﬂow. These parts are ideal for
applications that do not require any heat sinking orforced air cooling.


Operational Temperature Range –40°C to +85°C
1600V I/O isolation
Packaged in a ﬁve-sided EMI shielding metal
package with non-conductive baseCertiﬁed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, safety approvals, 2ndedition, with AM1

For full details go to
www.murata-ps.com/rohs

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MDC_SPM15.C02 Page 1 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ➀ ➂OutputInput

R/N (mVp-p)

Root Models ➀IOUT Total
VOUT (A, Power(V) max) (W) Typ. ➁ Max.

Regulation (Max.)
Line

Load

VIN Nom.
(V)

SPM15-033-Q12

3.3

4.5

14.85

60

100

±0.25

±0.25

SPM15-033-Q48

3.3

5

16.5

30

60

±0.25

SPM15-050-Q12

5

3

15

40

70

SPM15-050-Q48

5

3

15

60

95

SPM15-120-Q12

12

1.3

15.6

60

SPM15-120-Q48

12

1.3

15.6

SPM15-150-Q12

15

1.1

SPM15-150-Q48

15

1.1

Efficiency (%)

Dimensions

IIN,
IIN,
Range min. load full load
(V)
(mA)
(A)

Min.

Typ.

Case (inches)

24

9-36

100

0.695

86.5

89

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

±0.25

48

18-75

60

0.76

88.5

90

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41±0.05%

±0.1%

24

9-36

105

0.71

85.5

88

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

±0.3%

±0.2%

48

18-75

56

0.35

86.5

88.5

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

120±0.05%

±0.1%

24

9-36

110

0.77

82.3

84

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

85

120

±0.075% ±0.05%

48

18-75

56

0.76

82

84

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

16.5

130

175

±0.1%

±0.1%

24

9-36

130

0.82

82.5

84

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

16.5

80

150

±0.1%

±0.075%

48

18-75

60

0.41

83

84.5

1.0 x 1.0 x 0.41 25.4 x 25.4 x 10.41

Notes:➀ Please refer to the part number structure for additional options and complete ordering part numbers.
➁ Ripple and Noise is shown at 20 MHz bandwidth.

Case (mm)➂ All speciﬁcations are at nominal line voltage and full load, +25 °C. unless otherwise
noted. See detailed speciﬁcations for full conditions.

INPUT/OUTPUT EXTERNAL TEST CAPACITORS
Model

Input Capacitor (electrolytic) Output Capacitor(s)SPM15-033-Q12

100 μF

SPM15-033-Q48

4.7 μF

SPM15-050-Q12

100 μF

SPM15-050-Q48

4.7 μF

SPM15-120-Q12

100 μF

SPM15-120-Q48

4.7 μF

SPM15-150-Q12

100 μF

SPM15-150-Q48

4.7 μF1μF ceramic &10μF tantalum

PART NUMBER STRUCTURE

SPM15- 120 - Q48 P Lx - C
Single Output Potted Module
15-Watt Series
Nominal Output Voltage
in Tenths of a Volt
(033 = 3.3V, 050 = 5V,
120 = 12V, 150 = 15V)

Input Voltage Range
Q12 = 9-36 Vdc
Q48 = 18-75Vdc

RoHS-6 Hazardous Substance Compliance(Does not claim EU RoHS exemption 7b, lead in solder)
Pin Length Option (through-hole only)
Blank = Std. pin length 0.15˝ (3.8mm)
L1 = 0.110˝ (2.79mm) ➀On/Off Control Logic
Blank = No On/Off & no Trim
P = Positive
N = Negative➀ Special quantity order is required; samples available with standard pin length only.
➁ Some model number combinations may not be available. See website or contact your local Murata sales representative.

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MDC_SPM15.C02 Page 2 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-033-Q12
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
036
Vdc
Input Voltage, Transient
100 mS max. duration50
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.46
15.07
W
Output Current
Current-limited, no damage, short-circuit protected
0.45
4.5
A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating Voltage Range
Recommended External Fuse
Start-up Threshold
Undervoltage Shutdown (50% load)
Internal Filter Type
Input Current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (Back) Ripple Current ➁Fast blow
Rising input voltage
Falling input voltage

9

24

8
7.7

8.5
8.3
C

Vin = nominal
Vin = minimum

0.695
1.89
0.05
50
100
1
30

Iout = minimum, unit=ON
Measured at input with speciﬁed ﬁlter

36
4
9
8.9

Vdc
A
Vdc
Vdc

0.726
1.947

A
A
A2-Sec.
A
mA
mA
mA, p-p

100
125
2
50

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 24V, full load
Vin = min., full load

86.5
86

89
87.3

Input to output

%
%
1600

10
1500
Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

Vdc
MΩ
pF

Yes
Hours x 106

2

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

325
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

350

375
50
50

KHz
mS
mS

60

100

μSec

±75

±150

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

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MDC_SPM15.C02 Page 3 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-033-Q12
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.46

14.85

15.07

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

3.251
-1.5
-10
3.7

3.3

4.9

3.35
1.5
10
5.4

Vdc
% of Vnom% of Vnom
Vdc

98% of Vnom., after warmup

0.45
4.9

4.5
7.5

4.5
8.5

A
A

Hiccup technique, autorecovery within±1.25% of Vout

0.321

Output shorted to ground, no damage

ContinuousA

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 24V
5 Hz- 20 MHz BW, Vin=24V
Low ESR

60

±0.25
±0.25
90
1000

% of Vout% of VoutmV pk-pk
μF

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
110

115
B
RoHS-6

85
85

°C
°C

125
120

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 100 μF, electrolytic. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

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MDC_SPM15.C02 Page 4 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-033-Q12
Power Dissipation

2.50

90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
58
56
54
52
0.5

2.25
Power Dissipation (Watts)

Efficiency (%)

Efﬁciency vs. Line Voltage and Load Current @ 25°C

VIN = 9V
VIN = 12V
VIN = 24V
VIN = 36V

2.00
1.75
1.50
1.25

VIN = 9V
VIN = 12V
VIN = 24V
VIN = 36V

1.00
0.75

0.9

1.4

1.8

2.3

2.7

3.2

3.6

4.1

0.50
0.5

4.5

0.9

1.4

1.8

2.3

2.7

3.2

3.6

4.1

4.5

80

85

Output Load Curre nt (Amps)

Load Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 9V, 12V, or 24V (air ﬂow from Pin J1 to Pin J2 on PCB)

Maximum Current Temperature Derating at sea level
Vin = 36V (air ﬂow from Pin J1 to Pin J2 on PCB)
55.5 m/s (100 LFM)

4

4
Output Current (Amps)

Output Current (Amps)

Natural Convection
3

2

1

3

2

1

0

0

30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

75

Ambient Temperature (°C)

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MDC_SPM15.C02 Page 5 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-033-Q48
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
080
Vdc
Input Voltage, Transient
100 mS max. duration
100
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.63
16.75
W
Output Current
Current-limited, no damage, short-circuit protected
0.55A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating Voltage Range
Recommended External Fuse
Start-up Threshold
Undervoltage Shutdown (50% load)
Internal Filter Type
Input Current
Full Load Input Current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (Back) Ripple Current ➁Fast blow
Rising input voltage
Falling input voltage

18

48

15.5
15

16.9
16
C

Vin = 24V
Vin = 48V
Vin = minimum

0.764
0.388
1.03
0.05
0.05
60
1
30

Iout = minimum, unit=ON
Measured at input with speciﬁed ﬁlter

75
2
17.9
16.8

Vdc
A
Vdc
Vdc

0.788
0.403
1.04

A
A
A
A2-Sec.
A
mA
mA
mA, p-p0.1
902

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 24V, full load
Vin = 48V, full load

88.5
86.5

90
88.5

Input to output

%
%
1600

10
1500
Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

Vdc
MΩ
pF

Yes
2,000,000

Hours

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

325
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

350
10
10

375
50
50

KHz
mS
mS

75

150

μSec

±75

±125

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

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MDC_SPM15.C02 Page 6 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-033-Q48
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Capacitive Loading

Conditions ➀ ➂No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

98% of Vnom., after warmup

Minimum

Typical/Nominal

Maximum

Units

1.63

16.5

16.75

W

3.25053.3
1.5

3.3495

-10
4

5

10
5.6

Vdc
% of Vnom% of Vnom
Vdc

0.5
5.9

5
7.3

5
8.4

A
A

0.3

A

±0.25
±0.25
60

% of Vout% of VoutmV pk-pk% of Vnom./°C
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 48V
20 MHz BW, Vin = 48V
At all outputs
Low ESR

30
0.02

5000

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-55
120

130
B
RoHS-6

85

°C

125
140

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 100 μF, electrolytic. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

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MDC_SPM15.C02 Page 7 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-033-Q48
Power Dissipation

3

92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62

2.5
Power Dissipation (Watts)

Efficiency (%)

Efﬁciency vs. Line Voltage and Load Current @ 25°C

VIN = 18V
VIN = 24V
VIN = 48V
VIN = 75V2
1.5
VIN = 18V
VIN = 24V
VIN = 48V
VIN = 75V

1
0.5
0

0.51

11

1.51

21

2.51

31

3.51

41

4.51

0.5

52

1.0

1.5

Load Current (Amps)

2.5

3.0

3.5

4.0

4.5

5.0

80

85

Maximum Current Temperature Derating at sea level
Vin 75 (air ﬂow from Pin J1 to Pin J3 on PCB)

6

6

5

5
.5 m/s (100 LFM)
Natural Convection

Natural Convection

Output Current (Amps)

Output Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 18V, 24V, 36V, 48V, or 60V (air ﬂow from Pin J1 to Pin J3 on PCB)4

2.0

Output Load Curre nt (Amps)

3

2

1

4

3

2

1

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

0
30

35

40

45

50

55

60

65

70

75

Ambient Temperature (°C)

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MDC_SPM15.C02 Page 8 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-050-Q12
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
036
Vdc
Input Voltage, Transient
100 mS max. duration50
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.48
15.23
W
Output Current
Current-limited, no damage, short-circuit protected
0.30
3A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating Voltage Range
Recommended External Fuse
Start-up Threshold
Start up Threshold
Undervoltage Shutdown
Internal Filter Type
Input Current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (Back) Ripple Current ➁Fast blow
Rising input voltage@-40°C
Falling input voltage

9

24

8
9.5
7.8

8.6
10.0
8.25
C

Vin = nominal
Vin = minimum

0.71
1.91
0.05
50
105
1
30

Iout = minimum, unit=ON
Measured at input with speciﬁed ﬁlter

36
4
9
10.5
9

Vdc
A
Vdc
Vdc
Vdc

0.73
1.97

A
A
A2-Sec.
mA
mA
mA
mA, p-p100
135
2

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 24V, full load
Vin = min., full load

85.5
86

Input to output

1600

Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

88
87.3

%
%

10
1500

Vdc
MΩ
pF

Yes
Hours x 106

6.2

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

330
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

350

370
50
50

KHz
mS
mS

100

150

μSec

±85

±125

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

www.murata-ps.com/support
MDC_SPM15.C02 Page 9 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-050-Q12
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.48

15

15.23

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

4.925
-1.5
-10
5.75

5

5.9

5.075
1.5
10
7

Vdc
% of Vnom% of Vnom.
Vdc

98% of Vnom., after warmup

0.3
3.5

3
4.75

3
6.5

A
A

0.3

A

±0.05
±0.1
70

% of Vout% of VoutmV pk-pk% of Vnom./°C
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 24V
5 Hz- 20 MHz BW, Vin=24V
At all outputs
Low ESR

40
±0.02

1000

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
110

115
B
RoHS-6

85
105

°C
°C

125
120

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 100 μF, electrolytic. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

www.murata-ps.com/support
MDC_SPM15.C02 Page 10 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-050-Q12
Efﬁciency vs. Line Voltage and Load Current @ 25°C

Power Dissipation

90

2.50

86

2.25

Efficiency (%)

78

Power Dissipation (Watts)

82
VIN = 36V
VIN = 30V
VIN = 24V
VIN = 12V
VIN = 9V

74
70
66
62
58

2.00
1.75
1.50
1.25

VIN = 36V
VIN = 30V
VIN = 24V
VIN = 12V
VIN = 9V

1.00
0.75

54
50
0.29

0.59

0.89

1.19

1.49

1.79

2.09

2.39

0.50
0.29

2.99

0.59

0.90

Load Current (Amps)

2.40

3.00

Maximum Current Temperature Derating at sea level
Vin 36 (air ﬂow from Pin J1 to Pin J3 on PCB)

4

4

3

3
Output Current (Amps)

Output Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 9V, 12V, or 24V (air ﬂow from Pin J1 to Pin J3 on PCB)

1.20
1.50
1.80
2.09
Output Load Curre nt (Amps)

Natural Convection
2

1

0.5 m/s (100 LFM)
Natural Convection
2

1

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (°C)

www.murata-ps.com/support
MDC_SPM15.C02 Page 11 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-050-Q12
Start-up Delay (Vin = 24V, Iout = 3A, Cload = 1μF || 10μF, Ta = +25°C)
CH1 = Vin, CH4 = Vout

On/Off enable Delay (Vin = 24V, Iout = 3A, Cload = 1μF || 10μF, Ta = +25°C)
CH1 = Enable, CH4 = Vout

Stepload Transient Response (Vin = 24V, Iout = 0.75 to 2.25A to 0.75A,
Cload = 1μF || 10μF, Ta = +25°C) Ch1 = Iout, Ch4 = Vout

Output Ripple and Noise (Vin = 24V, Iout = 0.30A, Cload = 1μF || 10μF,
Ta = +25°C, BW = 20Mhz)

Output Ripple and Noise (Vin = 24V, Iout = 3A, Cload = 1μF || 10μF,
Ta = +25°C, BW = 20Mhz)

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MDC_SPM15.C02 Page 12 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-050-Q48
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
080
Vdc
Input Voltage, Transient
100 mS max. duration
100
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.48
15.23
W
Output Current
Current-limited, no damage, short-circuit protected
0.3
3A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating Voltage Range
Recommended External Fuse
Start-up Threshold
Undervoltage Shutdown
Internal Filter Type
Input Current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (Back) Ripple Current ➁Fast blow
Rising input voltage
Falling input voltage

18

48

16
15

16.9
16
C

Vin = nominal
Vin = minimum

0.35
0.93
0.05
0.05
56
1
30

Iout = minimum, unit=ON
Measured at input with speciﬁed ﬁlter

75
1.5
17.9
17.5

Vdc
A
Vdc
Vdc

0.37
0.97

A
A
A2-Sec.
mA
mA
mA
mA, p-p0.1
902

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 48V, full load
Vin = min., full load

86.5
87.5

88.5
89.5

Input to output

%
%
1600

10
1500
Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

Vdc
MΩ
pF

Yes
Hours x 106

2

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

320
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

345
10
10

375
50
100

KHz
mS
mS

60

120

μSec

±50

±150

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

www.murata-ps.com/support
MDC_SPM15.C02 Page 13 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-050-Q48
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.48

15

15.23

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

4.925
-1.5
-10
6

5

7

5.075
1.5
10
8

Vdc
% of Vnom% of Vnom.
Vdc

98% of Vnom., after warmup

0.3
3.75

3
4.5

3
5.5

A
A

0.3

A

±0.3
±0.2
95
470

% of Vout% of VoutmV pk-pk
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 48V
5 Hz- 20 MHz BW, Vin=48V
Low ESR60

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
130

135
B
RoHS-6

85
85

°C
°C

125
150

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 100 μF, electrolytic. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

www.murata-ps.com/support
MDC_SPM15.C02 Page 14 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-050-Q48
Efﬁciency vs. Line Voltage and Load Current @ 25°C

Power Dissipation

3.0

90
85
Power Dissipation (Watts)

Efficiency (%)

80
VIN = 75V
VIN = 48V
VIN = 36V
VIN = 24V
VIN = 18V

75
70
65
60
55

2.5

2.0

1.5

VIN = 75V
VIN = 48V
VIN = 36V
VIN = 24V
VIN = 18V

1.0

50
45
0.35

0.68

1.02

1.35

1.69

2.02

2.35

2.68

0.5
0.35

3.02

0.68

1.02

1.35

1.69

2.02

2.35

2.68

3.02

Output Load Curre nt (Amps)

Load Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 18V, 24V, 36V, or 48V (air ﬂow from Pin 1 to Pin 2 on PCB)
4

Output Current (Amps)

3
0.5 m/s (100 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM);
Natural Convection

2

1

0
30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (°C)

Maximum Current Temperature Derating at sea level
Vin 60 (air ﬂow from Pin 1 to Pin 2 on PCB)

Maximum Current Temperature Derating at sea level
Vin 75 (air ﬂow from Pin 1 to Pin 2 on PCB)4

4

3
Output Current (Amps)

Output Current (Amps)

3
0.5 m/s (100 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

2

1

0

0.5 m/s (100 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

2

1

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (°C)

www.murata-ps.com/support
MDC_SPM15.C02 Page 15 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-120-Q12
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
036
Vdc
Input Voltage, Transient
100 mS max. duration50
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.54
15.76
W
Output Current
Current-limited, no damage, short-circuit protected
0.13
1.3
A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating Voltage Range
Recommended External Fuse
Start-up Threshold
Undervoltage Shutdown
Internal Filter Type
Input Current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (Back) Ripple Current ➁Fast blow
Rising input voltage
Falling input voltage

9

24

8
7.9

8.5
8.2
C

Vin = nominal
Vin = minimum

0.77
2.05
0.05
50
105
1
30

Iout = minimum, unit=ON
Measured at input with speciﬁed ﬁlter

36
4
9
8.7

Vdc
A
Vdc
Vdc

0.8
2.11

A
A
A2-Sec.
mA
mA
mA
mA, p-p

120
130
2.5

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 24V, full load
Vin = min., full load

82.5
83

Input to output

1600

Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

84
84.5

%
%

10
1500

Vdc
MΩ
pF

Yes
Hours x 106

TBD

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

300
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

330
5
5

360
50
50

KHz
mS
mS

60

120

μSec

±100

±150

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

www.murata-ps.com/support
MDC_SPM15.C02 Page 16 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-120-Q12
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.54

15.6

15.76

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

11.88
-1
-10
15.5

12

17.2

12.12
1
10
19.5

Vdc
% of Vnom% of Vnom.
Vdc

98% of Vnom., after warmup

0.13
1.5

1.3
2.1

1.3
2.6

A
A

0.3

A

±0.05
±0.1
120

% of Vout% of VoutmV pk-pk% of Vnom./°C
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 24V
5 Hz- 20 MHz BW, Vin=24V
At all outputs
Low ESR

60
±0.02

470

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
110

115
B
RoHS-6

85
105

°C
°C

125
120

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 100 μF, electrolytic. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

www.murata-ps.com/support
MDC_SPM15.C02 Page 17 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-120-Q12
Efﬁciency vs. Line Voltage and Load Current @ 25°C

88
86

Efficiency (%)

84
82
80
78

VIN = 9V
VIN = 12V
VIN = 24V
VIN = 36V

76
74
72
70
0.13

0.26

0.39

0.52

0.65

0.78

0.91

1.04

1.17

1.30

Load Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 12V (air ﬂow from Pin 1 to Pin 2 on PCB)

Maximum Current Temperature Derating at sea level
Vin = 9V (air ﬂow from Pin 1 to Pin 2 on PCB)
2

Output Current (Amps)

Output Current (Amps)

2

0.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

00.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM);
Natural Convection

1

0
30

35

40

45

50

55

60

65

70

75

80

85

30

35

40

45

Ambient Temperature (°C)

55

60

65

70

75

80

85

75

80

85

Ambient Temperature (°C)

Maximum Current Temperature Derating at sea level
Vin = 24V (air ﬂow from Pin 1 to Pin 2 on PCB)

Maximum Current Temperature Derating at sea level
Vin = 36V (air ﬂow from Pin 1 to Pin 2 on PCB)
2

Output Current (Amps)2

Output Current (Amps)

50

0.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

00.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

Ambient Temperature (°C)

www.murata-ps.com/support
MDC_SPM15.C02 Page 18 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-120-Q12
Output Ripple and Noise (Vin = 24V, Iout = 1.3A, Cload = 1μf || 10μF,
Ta = +25°C, BW = 20Mhz)

Output Ripple and Noise (Vin = 24V, Iout = 0.13A, Cload = 1μf || 10μF,
Ta = +25°C, BW = 20Mhz)

Start-up Delay (Vin = 24V, Iout = 1.3A, Cload = 470μF, Ta = +25°C)
CH1 = Vout, CH3 = Vin.

On/Off enable Delay (Vin = 24V, Iout = 1.3A, Cload = 470μF, Ta = +25°C)
CH1 = enable, CH2 = Vout.

Stepload Transient Response (Vin = 24V, Iout = 50-75-50% of Imax,
Cload = 1μf || 10μF, Io = 200mA/div, Ta = +25°C) CH2 = Vout, CH4 = Iout)

Stepload Transient Response (Vin = 24V, Iout = 50-75-50% of Imax,
Cload = 470μF, Io = 200mA/div, Ta = +25°C) CH2 = Vout, CH4 = Iout)

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MDC_SPM15.C02 Page 19 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-120-Q48
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
080
Vdc
Input Voltage, Transient
100 mS max. duration
100
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.54
15.76
W
Output Current
Current-limited, no damage, short-circuit protected
0.13
1.3
A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Turn-On/Turn-Off Hysteresis
Internal Filter Type
Input current
Full Load Input Current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (back) ripple current ➁Fast blow
Rising input voltage
Falling input voltage

18

48

16
15

16.75
16
1.5
LC

Vin = 24V
Vin = 48V
Vin = minimum

0.76
0.387
1.032
0.05
50
56
1
30

Iout = minimum, unit = ON
Measured at input with speciﬁed ﬁlter

75
1.5
17.5
17

Vdc
A
Vdc
Vdc
Vdc

0.782
0.400
1.042

A
A

100
90
2

A2-Sec.
mA
mA
mA
mA, p-p

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 48V, full load
Vin = 24V., full load

82
84

Input to output

1600

Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

85.5
84

%
%

10
1500

Vdc
MΩ
pF

Yes
Hours x 106

6.4

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

300
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

335
10
10

370
50
50

KHz
mS
mS

50

100

μSec

±125

±200

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

www.murata-ps.com/support
MDC_SPM15.C02 Page 20 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-120-Q48
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.54

15.6

15.76

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

11.88
-1
-10
14.5

12

16.5

12.12
1
10
17.5

Vdc
% of Vnom% of Vnom.
Vdc

98% of Vnom., after warmup

0.13
1.5

1.3
1.9

1.3
2.3

A
A

TBD

A

±0.075±0.05
120% of Vout% of VoutmV pk-pk% of Vnom./°C
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 48V
5 Hz- 20 MHz BW, Vin=48V
At all outputs
Low ESR

85
±0.02

470

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See Derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
130

135
B
RoHS-6

85
105

°C
°C

125
150

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 4.7 μF. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

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MDC_SPM15.C02 Page 21 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-120-Q48
Efﬁciency vs. Line Voltage and Load Current @ 25°C

Output Current (Amps)

2

0.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

0
30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (°C)

Maximum Current Temperature Derating at sea level
Vin = 24V (air ﬂow from Pin 1 to Pin 2 on PCB)

Maximum Current Temperature Derating at sea level
Vin = 18V (air ﬂow from Pin 1 to Pin 2 on PCB)
2

Output Current (Amps)

Output Current (Amps)

2

0.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

00.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

0
30

35

40

45

50

55

60

65

70

75

80

85

30

35

40

45

Ambient Temperature (°C)

55

60

65

70

75

80

85

75

80

85

Ambient Temperature (°C)

Maximum Current Temperature Derating at sea level
Vin = 48V (air ﬂow from Pin 1 to Pin 2 on PCB)

Maximum Current Temperature Derating at sea level
Vin = 75V (air ﬂow from Pin 1 to Pin 2 on PCB)
2

Output Current (Amps)2

Output Current (Amps)

50

0.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM);
Natural Convection

1

00.33 m/s (65 LFM); 1.0 m/s (200 LFM);
1.5 m/s (300 LFM); 2.0 m/s (400 LFM)
Natural Convection

1

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

Ambient Temperature (°C)

www.murata-ps.com/support
MDC_SPM15.C02 Page 22 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-150-Q12
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
036
Vdc
Input Voltage, Transient
100 mS max. duration50
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.63
16.67
W
Output Current
Current-limited, no damage, short-circuit protected
0.11
1.1
A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold (@+25°C and -40°C)
Undervoltage shutdown
Internal Filter Type
Input current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (back) ripple current ➁Fast blow
Rising input voltage
Falling input voltage

9

24

8
7.8

8.5
8.25
C

Vin = nominal
Vin = minimum

0.82
2.13
0.05
50
130
1
30

Iout = minimum, unit = ON
Measured at input with speciﬁed ﬁlter

36
4
9
9

Vdc
A
Vdc
Vdc

0.84
2.19

A
A
A2-Sec.
mA
mA
mA
mA, p-p

100
150
2.5

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 24V, full load
Vin = min., full load

82.5
84.5

Input to output

1600

84
86

%
%
Vdc

basic
10
1500
Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

MΩ
pF

Yes
Hours x 106

TBD

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

300
Power on to Vout regulated
Remote on to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

330

360
50
50

KHz
mS
mS

100

150

μSec

±150

±250

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

www.murata-ps.com/support
MDC_SPM15.C02 Page 23 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-150-Q12
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.63

16.5

16.67

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

14.85
1
-10
17

15

19.5

15.15
1
10
22.5

Vdc
% of Vnom% of Vnom.
Vdc

98% of Vnom., after warmup

0.11
1.2

1.1
1.6

1.1
2

A
A

0.3

A

±0.1
±0.1
175

% of Vout% of VoutmV pk-pk% of Vnom./°C
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 24V
5 Hz- 20 MHz BW, Vin=24V
At all outputs
Low ESR

130
±0.02

470

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See Derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
110

115
B
RoHS-6

85
105

°C
°C

125
120

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 100 μF, electrolytic. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

www.murata-ps.com/support
MDC_SPM15.C02 Page 24 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-150-Q12
Efﬁciency vs. Line Voltage and Load Current @ 25°C

90

Efficiency (%)

85
80
75
VIN = 9V
VIN = 12V
VIN = 24V
VIN = 36V

70
65
60
0.11

0.22

0.33

0.44

0.55

0.66

0.77

0.88

0.99

1.1

Load Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 9, 12, or 24V (unit monuted on PCB)*

Maximum Current Temperature Derating at sea level
Vin = 36V (air ﬂow is from J1 to J3 on PCB*
2

Output Current (Amps)

Output Current (Amps)

2

1
Natural Convection

01
0.33 m/s (65 LFM)
Natural Convection

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (°C)

*Using Burn in board, connection with solder

www.murata-ps.com/support
MDC_SPM15.C02 Page 25 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-150-Q12
Output Ripple and Noise(Vin = 24V, Iout = 0.11A, Cload = 1μF || 10μF,
Ta = +25°C, BW = 20Mhz)

Output Ripple and Noise(Vin = 24V, Iout = 1.1A, Cload = 1μF || 10μF,
Ta = +25°C, BW = 20Mhz)

Start-up Delay (Vin = 24V, Iout = 1.1A, Cload = 1μF || 10μF,
Ta = +25°C) CH1 = Vout, CH3 = Vin

On/Off enable Delay (Vin = 24V, Iout = 1.1A, Cload = 1μF || 10μF,
Ta = +25°C) CH1 = Vout, CH3 = Enable

Stepload Transient Response (Vin = 24V, Iout = 50% to 75%, Cload = 1μF || 10μF,
Ta = +25°C) Ch1 = Vout, Ch4 = Iout

www.murata-ps.com/support
MDC_SPM15.C02 Page 26 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL SPM15-150-Q48
ABSOLUTE MAXIMUM RATINGS

Conditions ➀Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous
080
Vdc
Input Voltage, Transient
100 mS max. duration
100
Vdc
Isolation Voltage
Input to output
1600
Vdc
On/Off Remote Control
Power on, referred to -Vin015
Vdc
Output Power
1.63
16.67
W
Output Current
Current-limited, no damage, short-circuit protected
0.11
1.1
A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than thoselisted in the Performance/Functional Speciﬁcations Table is not implied or recommended.

INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Internal Filter Type
Input current
Full Load Input Current
Low Line Input Current
Inrush Transient
Short Circuit Input Current
Minimum Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (back) ripple current ➁Fast blow
Rising input voltage
Falling input voltage

18

48

16
15

16.7
16.2
C

Vin = nominal
Vin = minimum

0.41
1.06
0.05
50
60
1
30

Iout = minimum, unit = ON
Measured at input with speciﬁed ﬁlter

75
2
17.9
17.5

Vdc
A
Vdc
Vdc

0.42
1.09

A
A
A2-Sec.
mA
mA
mA
mA, p-p

100
85
2

GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
SafetyCalculated MTBF

Vin = 48V, full load
Vin = min., full load

83
85

Input to output

1600

85.5
86.5

%
%
Vdc

basic
10
1500
Certiﬁed to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition, with AM1
Per Telcordia SR332, issue 1, class 3, ground
ﬁxed, Tambient = +25°C

MΩ
pF

Yes
Hours x 106

TBD

DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation

300
Power on to Vout regulated
Remote on to Vout regulated
50-75-50% load step, settling time to within
1% of Voutsame as above

330

360
50
50

KHz
mS
mS

60

120

μSec

±150

±250

mV

0.8
15

V
V
mA

15
0.7

V
V
mA

FEATURES and OPTIONS
Remote On/Off Control ➂“N” suffix
Negative Logic, ON state
Negative Logic, OFF state
Control Current“P” suffix
Positive Logic, ON state
Positive Logic, OFF state
Control Current

ON = Ground pin
OFF = Pin open
Open collector/drain

-0.7
10

ON = Pin open
OFF = Ground pin
Open collector/drain

10
-0.7

1

1

www.murata-ps.com/support
MDC_SPM15.C02 Page 27 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL SPM15-150-Q48
OUTPUT
Total Output Power
VoltageNominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short forrecovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Capacitive Loading

Conditions ➀ ➂Minimum

Typical/Nominal

Maximum

Units

1.63

16.5

16.67

W

No trim
At 50% load, no trim
User-adjustable
Via magnetic feedback

14.85
1
-10
19

15

20

15.15
1
10
21.5

Vdc
% of Vnom% of Vnom.
Vdc

98% of Vnom., after warmup

0.11
1.3

1.1
1.7

1.1
2.2

A
A

0.3

A

±0.1
±0.075150% of Vout% of VoutmV pk-pk% of Vnom./°C
μF

Hiccup technique, autorecovery within±1.25% of Vout
Output shorted to ground, no damage

Continuous

Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 48V
5 Hz- 20 MHz BW, Vin=24V
At all outputs
Low ESR

80
±0.02

470

MECHANICAL
Outline Dimensions(Please refer to outline drawing)
Weight1 x 1 x 0.41
25.4 x 25.4 x 10.41
0.69
19.56
0.04
1.016
Copper alloy
50
5

WxLxH

Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness

Nickel subplate
Gold overplate

Inchesmm
Ounces
Grams
Inchesmm
μ-inches
μ-inches

ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating

See Derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External ﬁlter is required

-40
-40
-55
110

115
B
RoHS-6

85
105

°C
°C

125
120

°C
°C
Class

Notes
➀ Unless otherwise noted, all speciﬁcations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature,near sea level altitude, natural convection airﬂow. All models are tested and speciﬁedwith external parallel 1 μF and 10 μF output capacitors. The external input capacitor
is 4.7 μF. All capacitors are low-ESR types wired close to the converter.

➁ Input (back) ripple current is tested and speciﬁed over 5 Hz to 20 MHz bandwidth.
Input ﬁltering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ The Remote On/Off Control is referred to -Vin.

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MDC_SPM15.C02 Page 28 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-150-Q48
Efﬁciency vs. Line Voltage and Load Current @ 25°C

90

Efficiency (%)

85
80
75
VIN = 9V
VIN = 12V
VIN = 24V
VIN = 36V

70
65
60
0.11

0.22

0.33

0.44

0.55

0.66

0.77

0.88

0.99

1.1

Load Current (Amps)

Maximum Current Temperature Derating at sea level
Vin = 48V (air ﬂow from J 1 to J3 on PCB)*

Maximum Current Temperature Derating at sea level
Vin = 18, 24, or 36V (air ﬂow from J 1 to J3 on PCB)*
2

Output Current (Amps)

Output Current (Amps)

2

1
Natural Convection

01
0.33 m/s (65 LFM)
Natural Convection

0
30

35

40

45

50

55

60

65

70

75

80

85

30

35

40

45

Ambient Temperature (°C)

55

60

65

70

75

80

85

75

80

85

Ambient Temperature (°C)

Maximum Current Temperature Derating at sea level
Vin = 60V (air ﬂow from J 1 to J3 on PCB)*

Maximum Current Temperature Derating at sea level
Vin = 75V (air ﬂow from J 1 to J3 on PCB)*
2

Output Current (Amps)2

Output Current (Amps)

50

10.33 m/s (65 LFM)
Natural Convection

01
0.33 m/s (65 LFM)
Natural Convection

0
30

35

40

45

50

55

60

65

Ambient Temperature (°C)

70

75

80

85

30

35

40

45

50

55

60

65

70

Ambient Temperature (°C)

*Using Burn in board, connection with solder

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MDC_SPM15.C02 Page 29 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TYPICAL PERFORMANCE DATA, SPM15-150-Q48
Output Ripple and Noise(Vin = 48V, Iout = 0.11A, Cload = 1μF || 10μF,
Ta = +25°C, BW = 20Mhz)

Output Ripple and Noise(Vin = 48V, Iout = 1.1A, Cload = 1μF || 10μF,
Ta = +25°C, BW = 20Mhz)

Start-up Delay (Vin = 48V, Iout = 1.1A, Cload = 1μF || 10μF,
Ta = +25°C) CH1 = Vout, CH3 = Vin

On/Off enable Delay (Vin = 48V, Iout = 1.1A, Cload = 1μF || 10μF,
Ta = +25°C) CH1 = Vout, CH3 = Enable

Stepload Transient Response (Vin = 48V, Iout = 50% to 75%, Cload = 1μF || 10μF,
Ta = +25°C) Ch1 = Vout, Ch4 = Iout

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MDC_SPM15.C02 Page 30 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
MECHANICAL SPECIFICATIONSBOTTOM VIEW

SIDE VIEW

0.800(20.32)0.41(10.41)
3

1
4

0.500
(12.7)

2

0.300(7.62)5

6

0.800
CL (20.32)
0.400

1.00 (25.4)(10.16)0.400(10.16)CL
4x 0.060-0.100
x 0.015-0.025 HIGHNON-METALLIC
STANDOFFS (DIMPLES)

0.02 (0.508) REF
0.15(3.81)INSULATINGHEADER

END VIEW
PIN #1
6
2

PIN #1
INDICATORISOMETRIC VIEW

5(FOR REF ONLY)

41

INPUT/OUTPUT CONNECTIONS

3

TOP VIEW
MATERIAL:.040 PINS: COPPER ALLOY
FINISH: (ALL PINS)
GOLD (5μ"MIN) OVER NICKEL (50μ" MIN)Pin

SPM Function(Single Output)

1

+Vin

2

-Vin

3

+Vout

4

Output Trim*

5

-Vout

6

On/Off Control** The Output Trim and On/Off Control
pins are optional. Also, the Remote
On/Off can be provided with either
positive (P sufﬁx) or negative(N sufﬁx) logic. Please see the Part
Number Structure on Page 2.

Dimensions are in inches (mm shown for ref. only).
Third Angle Projection

Tolerances (unless otherwise speciﬁed):.XX ± 0.02 (0.5).XXX ± 0.010 (0.25)
Angles ± 2˚Components are shown for reference only.

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MDC_SPM15.C02 Page 31 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
RECOMMENDED FOOTPRINT (VIEW THROUGH CONVERTER)

TOP VIEW
0.800(20.32)0.400(10.16)

6

5

0.100

1.02 (25.91) MIN
COURTYARD

2

4

CL

0.400
(10.16)0.275(6.99)
CL1
0.51(12.95)0.100

4x 0.100 'LANDING
ZONES' FOR NON-METALLIC
STANDOFFS(KEEP FREE OF COMPS)

0.55 0.800(13.97) (20.32)

3

0.51(12.95)CL

1.02 (25.91) MIN
COURTYARD

FINISHED HOLE SIZES@ PINS 1 THRU 6(PER IPC-D-275, LEVEL C)
0.048-0.062

STANDARD PACKAGING

EACH STATIC DISSIPATIVE
PLASTIC TUBE HOLDS 16
CONVERTERS

21.88(555.75)
REF

0.91 (23.11) REF

16 UNITS PER TUBE
6 TUBES PER CARTON

1.16 (29.46) REF

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MDC_SPM15.C02 Page 32 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
TECHNICAL NOTES

Input Fusing
Certain applications and/or safety agencies may require fuses at the inputs ofpower conversion components. Fuses should also be used when there is thepossibility of sustained input voltage reversal which is not current-limited. For
greatest safety, we recommend a fast blow fuse installed in the ungrounded
input supply line.
The installer must observe all relevant safety standards and regulations. For
safety agency approvals, install the converter in compliance with the end-user
safety standard.
Input Under-Voltage Shutdown and Start-Up Threshold
Under normal start-up conditions, converters will not begin to regulate properly
until the rising input voltage exceeds and remains at the Start-Up Threshold
Voltage (see Speciﬁcations). Once operating, converters will not turn off until
the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent
restart will not occur until the input voltage rises again above the Start-Up
Threshold. This built-in hysteresis prevents any unstable on/off operation at asingle input voltage.
Users should be aware however of input sources near the Under-Voltage
Shutdown whose voltage decays as input current is consumed (such as capacitor
inputs), the converter shuts off and then restarts as the external capacitor recharges. Such situations could oscillate. To prevent this, make sure the operating
input voltage is well above the UV Shutdown voltage AT ALL TIMES.
Start-Up Delay
Assuming that the output current is set at the rated maximum, the Vin to Vout StartUp Delay (see Speciﬁcations) is the time interval between the point when the rising
input voltage crosses the Start-Up Threshold and the fully loaded regulated output
voltage enters and remains within its speciﬁed regulation band. Actual measured
times will vary with input source impedance, external input capacitance, input voltage slew rate and ﬁnal value of the input voltage as it appears at the converter.
These converters include a soft start circuit to moderate the duty cycle of thePWM controller at power up, thereby limiting the input inrush current.
The On/Off Remote Control interval from inception to VOUT regulated assumes that the converter already has its input voltage stabilized above theStart-Up Threshold before the On command. The interval is measured from theOn command until the output enters and remains within its speciﬁed regulation
band. The speciﬁcation assumes that the output is fully loaded at maximum
rated current.
Input Source Impedance
These converters will operate to speciﬁcations without external components,
assuming that the source voltage has very low impedance and reasonable input voltage regulation. Since real-world voltage sources have ﬁnite impedance,
performance is improved by adding external ﬁlter components. Sometimes onlya small ceramic capacitor is sufﬁcient. Since it is difﬁcult to totally characterize
all applications, some experimentation may be needed. Note that external input
capacitors must accept high speed switching currents.

Because of the switching nature of DC/DC converters, the input of theseconverters must be driven from a source with both low AC impedance andadequate DC input regulation. Performance will degrade with increasing input
inductance. Excessive input inductance may inhibit operation. The DC input
regulation speciﬁes that the input voltage, once operating, must never degrade
below the Shut-Down Threshold under all load conditions. Be sure to use
adequate trace sizes and mount components close to the converter.
I/O Filtering, Input Ripple Current and Output NoiseAll models in this converter series are tested and speciﬁed for input reﬂected
ripple current and output noise using designated external input/output components, circuits and layout as shown in the ﬁgures below. External input capacitors (CIN in the ﬁgure) serve primarily as energy storage elements, minimizing
line voltage variations caused by transient IR drops in the input conductors.
Users should select input capacitors for bulk capacitance (at appropriate
frequencies), low ESR and high RMS ripple current ratings. In the ﬁgure below,
the CBUS and LBUS components simulate a typical DC voltage bus. Your speciﬁc
system conﬁguration may require additional considerations. Please note that thevalues of CIN, LBUS and CBUS may vary according to the speciﬁc converter model.
TO
OSCILLOSCOPE

VIN

+
–
+
–

CURRENT
PROBE

1

+VIN

LBUS
CBUS

CIN
2

−VIN

CIN = 33μF, ESR < 700mΩ @ 100kHz
CBUS = 220μF, ESR < 100mΩ @ 100kHz
LBUS = 12μH

Figure 1. Measuring Input Ripple Current

In critical applications, output ripple and noise (also referred to as periodic
and random deviations or PARD) may be reduced by adding ﬁlter elements
such as multiple external capacitors. Be sure to calculate component temperature rise from reﬂected AC current dissipated inside capacitor ESR.
Floating Outputs
Since these are isolated DC/DC converters, their outputs are “ﬂoating” withrespect to their input. The essential feature of such isolation is ideal ZERO
CURRENT FLOW between input and output. Real-world converters however do
exhibit tiny leakage currents between input and output (see Speciﬁcations).
These leakages consist of both an AC stray capacitance coupling component
and a DC leakage resistance. When using the isolation feature, do not allow
the isolation voltage to exceed speciﬁcations. Otherwise the converter may
be damaged. Designers will normally use the negative output (-Output) as
the ground return of the load circuit. You can however use the positive output(+Output) as the ground return to effectively reverse the output polarity.

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MDC_SPM15.C02 Page 33 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters

+VOUT

C1

C2

SCOPE

RLOAD

−VOUT

C1 = 1μF
C2 = 10μF
LOAD 2-3 INCHES (51-76mm) FROM MODULE

Figure 2. Measuring Output Ripple and Noise (PARD)

Minimum Output Loading Requirements
These converters employ a synchronous rectiﬁer design topology. All models
regulate within speciﬁcation and are stable from 0% load to full load conditions,
unless otherwise speciﬁed. Operation under no load will not damage the converter but might, however, slightly increase regulation, output ripple, and noise.
Thermal Shutdown
To protect against thermal over-stress, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the DC/
DC’s to rise above the Operating Temperature Range up to the shutdown temperature, an on-board electronic temperature sensor will power down the unit.
When the temperature decreases below the turn-on threshold, the converter
will automatically restart. There is a small amount of hysteresis to prevent
rapid on/off cycling. CAUTION: If you operate too close to the thermal limits, theconverter may shut down suddenly without warning. Be sure to thoroughly test
your application to avoid unplanned thermal shutdown.
Temperature Derating Curves
The graphs in the performance data section illustrate typical operation under avariety of conditions. The Derating curves show the maximum continuous ambient
air temperature and decreasing maximum output current which is acceptable underincreasing forced airﬂow measured in Linear Feet per Minute (“LFM”). Note thatthese are AVERAGE measurements. The converter will accept brief increases in temperature and/or current or reduced airﬂow as long as the average is not exceeded.
Note that the temperatures are of the ambient airﬂow, not the converter itself which is obviously running at higher temperature than the outside air. Also
note that “natural convection” is deﬁned as very low ﬂow rates which are notusing fan-forced airﬂow. Depending on the application, “natural convection” isusually about 30-65 LFM but is not equal to still air (0 LFM).
Murata Power Solutions makes Characterization measurements in a closed
cycle wind tunnel with calibrated airﬂow. We use both thermocouples and an
infrared camera system to observe thermal performance. As a practical matter,
it is quite difﬁcult to insert an anemometer to precisely measure airﬂow inmost applications. Sometimes it is possible to estimate the effective airﬂow if
you thoroughly understand the enclosure geometry, entry/exit oriﬁce areas andthe fan ﬂowrate speciﬁcations.
CAUTION: If you exceed these Derating guidelines, the converter may havean unplanned Over Temperature shut down. Also, these graphs are all collected
near Sea Level altitude. Be sure to reduce the derating for higher altitude.

Output Overvoltage Protection (OVP)
This converter monitors its output voltage for an over-voltage condition using
an on-board electronic comparator. The signal is optically coupled to the primary side PWM controller. If the output exceeds OVP limits, the sensing circuit
will power down the unit, and the output voltage will decrease. After a time-out
period, the PWM will automatically attempt to restart, causing the output voltage to ramp up to its rated value. It is not necessary to power down and resetthe converter for this automatic OVP-recovery restart.
If the fault condition persists and the output voltage climbs to excessive
levels, the OVP circuitry will initiate another shutdown cycle. This on/off cycling
is referred to as “hiccup” mode.
Output Fusing
The converter is extensively protected against current, voltage and temperature
extremes. However, your application circuit may need additional protection. In theextremely unlikely event of output circuit failure, excessive voltage could be applied
to your circuit. Consider using an appropriate external protection.
Output Current Limiting
As soon as the output current increases to approximately its overcurrent limit,
the DC/DC converter will enter a current-limiting mode. The output voltage will
decrease proportionally with increases in output current, thereby maintaining asomewhat constant power output. This is commonly referred to as power limiting.
Current limiting inception is deﬁned as the point at which full power falls
below the rated tolerance. See the Performance/Functional Speciﬁcations.
Note particularly that the output current may brieﬂy rise above its rated value.
This enhances reliability and continued operation of your application. If theoutput current is too high, the converter will enter the short circuit condition.
Output Short Circuit Condition
When a converter is in current-limit mode, the output voltage will drop as
the output current demand increases. If the output voltage drops too low, themagnetically coupled voltage used to develop PWM bias voltage will also drop,
thereby shutting down the PWM controller. Following a time-out period, thePWM will restart, causing the output voltage to begin rising to its appropriate
value. If the short-circuit condition persists, another shutdown cycle will initiate. This on/off cycling is called “hiccup mode.” The hiccup cycling reduces theaverage output current, thereby preventing excessive internal temperatures.
Trimming the Output Voltage
The Trim input to the converter allows the user to adjust the output voltage over
the rated trim range (please refer to the Speciﬁcations). In the trim equations
and circuit diagrams that follow, trim adjustments use a single ﬁxed resistor
connected between the Trim input and either Vout pin. Trimming resistors shouldhave a low temperature coefﬁcient (±100 ppm/°C or less) and be mounted close
to the converter. Keep leads short. If the trim function is not used, leave the trim
unconnected. With no trim, the converter will exhibit its speciﬁed output voltage
accuracy.
There are two CAUTIONs to observe for the Trim input:
CAUTION: To avoid unplanned power down cycles, do not exceed EITHER
the maximum output voltage OR the maximum output power when setting thetrim. If the output voltage is excessive, the OVP circuit may inadvertantly shut
down the converter. If the maximum power is exceeded, the converter may

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MDC_SPM15.C02 Page 34 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
enter current limiting. If the power is exceeded for an extended period, the converter may overheat and encounter overtemperature shut down.
CAUTION: Be careful of external electrical noise. The Trim input is a senstive
input to the converter’s feedback control loop. Excessive electrical noise may
cause instability or oscillation. Keep external connections short to the Trim
input. Use shielding if needed.

There are two CAUTIONs for the On/Off Control:
CAUTION: While it is possible to control the On/Off with external logic if you
carefully observe the voltage levels, the preferred circuit is either an open
drain/open collector transistor or a relay (which can thereupon be controlled bylogic). The On/Off prefers to be set at approx. +15V (open pin) for the ON state,assuming positive logic.
CAUTION: Do not apply voltages to the On/Off pin when there is no input
power voltage. Otherwise the converter may be permanently damaged.

Trim Equations
Trim Up

Trim Down<Connect trim resistor
between Trim and –Vout><Connect trim resistor
between Trim and +Vout>
+VIN

+VOUT

SPM15-033-Q12, Q48
RTUP (Ω) =12775– 2050VO – 3.3

RTDOWN (Ω) =5110 (Vo - 2.5)

– 2050

3.3 – VO

SPM15-050-Q12, Q48
RTUP (Ω) =12775
VO – 5– 2050

RTDOWN (Ω) =5110 x (Vo –2.5)
5 – VO

RTUP (Ω) =– 5110VO – 12

RTDOWN (Ω) =10000 (Vo-2.5)25000– 5110

RTDOWN (Ω) =

−VIN

−VOUT

12 – VO

Figure 3. Trim adjustments to decrease Output Voltage using a Fixed Resistor
10000 (Vo-2.5)– 5110

+VIN

+VOUT

Where Vo = Desired output voltage. Adjustment accuracy is subject to resistor tolerances and factory-adjusted output accuracy. Mount trim resistor close
to converter. Use short leads.

ON/OFFCONTROL

TRIM

Remote On/Off Control
On the input side, a remote On/Off Control can be speciﬁed with either positiveor negative logic as follows:

−VIN

−VOUT

VO – 15LOAD
RTRIM DOWN

– 5110

SPM15-150-Q12, Q48
RTUP (Ω) =TRIM– 2050

SPM15-120-Q12, Q48
25000

ON/OFFCONTROL

15 – VO

Positive: Models equipped with Positive Logic are enabled when the On/Off
pin is left open or is pulled high to +15VDC with respect to –VIN. An internal bias
current causes the open pin to rise to +VIN. Positive-logic devices are disabled
when the On/Off is grounded or brought to within a low voltage (see Speciﬁcations) with respect to –VIN.
Negative: Models with negative logic are on (enabled) when the On/Off isgrounded or brought to within a low voltage (see Speciﬁcations) with respect to–VIN. The device is off (disabled) when the On/Off is left open or is pulled highto +15VDC Max. with respect to –VIN.
Dynamic control of the On/Off function should be able to sink the speciﬁed
signal current when brought low and withstand speciﬁed voltage when brought
high. Be aware too that there is a ﬁnite time in milliseconds (see Speciﬁcations)
between the time of On/Off Control activation and stable, regulated output. This
time will vary slightly with output load type and current and input conditions.

LOAD
R TRIM UP

Figure 4. Trim adjustments to increase Output Voltage using a Fixed Resistor+VCC

ON/OFFCONTROL-VIN

Figure 5. Driving the On/Off Control Pin (suggested circuit)www.murata-ps.com/support
MDC_SPM15.C02 Page 35 of 36

SPM15 Series
Single Output Potted Metal Package
Isolated 15-Watt DC-DC Converters
Vertical Wind Tunnel

IR Transparent
optical window

Variable
speed fan

Unit under
test (UUT)

Murata Power Solutions employs a computer controlled
custom-designed closed loop vertical wind tunnel, infrared
video camera system, and test instrumentation for accurate
airﬂow and heat dissipation analysis of power products.
The system includes a precision low ﬂow-rate anemometer,
variable speed fan, power supply input and load controls,
temperature gauges, and adjustable heating element.
The IR camera monitors the thermal performance of theUnit Under Test (UUT) under static steady-state conditions. A
special optical port is used which is transparent to infrared
wavelengths.

IR Video
CameraHeating
element
Precision
low-rateanemometer3” below UUT

Both through-hole and surface mount converters are
soldered down to a 10˝ X10˝ host carrier board for realistic
heat absorption and spreading. Both longitudinal and transverse airﬂow studies are possible by rotation of this carrierboard since there are often signiﬁcant differences in the heatdissipation in the two airﬂow directions. The combination ofadjustable airﬂow, adjustable ambient heat, and adjustable
Input/Output currents and voltages mean that a very wide
range of measurement conditions can be studied.
The collimator reduces the amount of turbulence adjacentto the UUT by minimizing airﬂow turbulence. Such turbulence inﬂuences the effective heat transfer characteristics
and gives false readings. Excess turbulence removes moreheat from some surfaces and less heat from others, possibly
causing uneven overheating.

Ambient
temperature
sensorAirﬂow
collimator

Both sides of the UUT are studied since there are different
thermal gradients on each side. The adjustable heating element
and fan, built-in temperature gauges, and no-contact IR camera meanthat power supplies are tested in real-world conditions.

Figure 6. Vertical Wind Tunnel

Soldering Guidelines
Murata Power Solutions recommends the speciﬁcations below when installing these converters. These speciﬁcations vary depending on the solder type. Exceeding these speciﬁcations may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your production
environment may differ; therefore please thoroughly review these guidelines with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)For Sn/Ag/Cu based solders:Maximum Preheat Temperature

For Sn/Pb based solders:
115° C.

Maximum Preheat Temperature

105° C.

Maximum Pot Temperature

270° C.

Maximum Pot Temperature

250° C.

Maximum Solder Dwell Time

7 seconds

Maximum Solder Dwell Time

6 seconds

Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansﬁeld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTEREDThis product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of othertechnical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speciﬁcations are subject to change without
notice.
© 2015 Murata Power Solutions, Inc.

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MDC_SPM15.C02 Page 36 of 36