THPM4601A_Rev.1.20_E

THPM4601A
4-16V Input 12A Output POL Power Module
Features

Description

THPM4601A is an easy-to-use 12A output integrated
Point of Load (POL) power supply module. It contains
power MOSFETs, driver, PWM controller, a highperformance inductor, input and output capacitors andother passive components in one low profile LGA package.
There is no need for loop compensation, inductor selection,or in-circuit production testing.
The THPM4601A can be programmed for any output
voltage between 0.6V and 5.0V using a single external
resistor. For an output voltage of 0.6V no resistor isrequired.
Small size (15.2mm x 15.2mm) and low profile (3.2mm)
allows the THPM4601A to be placed very close to its load,or on the back side of the PCB board for high density
applications.
Constant on-time (COT) control achieves excellent
transient response to line and load changes without
sacrificing stability and high efficiency at light load.















Integrated Point of Load power module
Small Footprint, low-profile, 15.2mm x 15.2mm x
3.2mm, with LGA Package (0.63mm pads)
Up to 12A maximum output current
Efficiency up to 93.5% at 12A and 95% at 6A
Single resistor output voltage programming forvoltages from 0.6V to 5.5V
Output voltage differential remote sensing
Input voltage range 4V to 16V
1 MHz switching frequency
Enable signal input and Power Good signal output
Output voltage sequencing
Pre-bias startup
Programmable Under Voltage Lock Out (UVLO)
Output Over-Current Protection (OCP)
Over-temperature Protection (OTP)
Operating temperature range -40°C to 85°C

Applications






Broadband and communications equipment
DSP and FPGA Point of Load applications
High density distributed power systems
PCI / PCI express / PXI express
Automated test and medical equipment

EFFICIENCY VS LOAD CURRENT

Efficiency (%)

SIMPLIFIED APPLICATION

Efficiency: Vin = 12V

100
95
90
85
80
75
70
65
60
55
50

Vout = 5.0V
Vout = 1.2V

0

1

2

3

4

5

6

7

8

9

10

11

Output Current (A)THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
1/23

Security E

12

THPM4601A_Rev.1.20_E

ABSOLUTE MAXIMUM(1) RATINGS over operating temperature range(unless otherwise noted)
VALUE
Unit
MIN
MAX
VIN
-0.3
18
V
EN
-0.3
4.3
V
InputsVOSNS+
VOUT-0.3V
VOUT+0.3V
V
VADJ
-0.3
4.3
V
VOUT
-0.6
9.7
V
Outputs
PWRGD
-0.3
4.3
V
Operating Junction Temperature
150°C
Temperature
Storage Temperature
-55
150
°C
Peak solder reflow body temperature
245°C(1) Stresses beyond these absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Ordering Information
Output Voltage
Adjustable

Module Part Number
THPM4601A

Pad Finish
Au (RoHS)

Package Type
LGA

Temperature Range-40˚C to 85˚C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
2/23

Security E

THPM4601A_Rev.1.20_E

ELECTRICAL CHARACTERISTICS
The electrical performance is based on the following conditions unless otherwise stated: 25°C ambient temperature, no
air flow; VIN = 12V, VOUT = 1.8V, IOUT = 12A, CIN = 3x22μF ceramic plus 150μF electrolytic, COUT = 4x22μF plus
2x47μF ceramic.
PARAMETERS
Input Specifications
VIN
Input voltage
VSTART Start up voltage [Note 1]
VEN_ON Enable input voltage
UVLO Under Voltage Lock Out [Note 1]
UVLO Hysteresis
Output Specifications
IOUT:
Output continuous current
Set point accuracy [Note 2]
Temperature variation
VOUT
Line regulation
Load regulation
VOUT(adj): Output voltage adjust range
Vo_rip,

Output voltage ripple

OVP
UVP

Over-voltage Protection
Under-voltage Protection

PWRGD

Power Good Signal

FS
Switching frequency
Performance Specifications

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Over IOUT range
Over IOUT range
Enable high voltage (module turned on)
Enable low voltage (module turned off)

4
1.17
-

12
3.1
3.0
0.1

16
0.97
-

V
V
V
V
V
V

TA = -40°C to 85°C, natural convection(derated above 50°C, refer to 0)
TA = 25°C, VIN = 12V, IOUT = 6A
-40°C < TA < +85°C, IOUT = 6A
Over VIN range, TA = 25°C, IOUT = 6A
Over IOUT range, TA = 25°C, VIN = 12V
Over IOUT range [Note 3]
20MHz bandwidth, VIN = 12V, IOUT =12A
OVP threshold (percentage of nominal)
UVP threshold (percentage of nominal)
PWRGD high
VOUT rising(% of VOUT)PWRGD delay
PWRGD low
VOUT falling(% VOUT)PWRGD highSink current
IPG
VIN = 12V, IOUT = 12A

0

-

12

A

0.6
-

±0.8%
±0.5%
±0.5%
±1%
20

5.5
-

V
mVpp

113%
77%
89.5%
77%
113%
-

116%
80%
92.5%
0.8
80%
116%
1

119%
83%
95.5%
83%
119%
10
-

ms
mA
MHz

IOUT = 6A
95%
IOUT = 12A
93.8%
Soft-Start Time [Note 4]
VIN = 12V, TA = 25°C, Over IOUT range
1.7
ms
Current Limit and Thermal Specifications
ILIM
Current Limit Point
VIN = 12V, TA = 25°C
14
A
Thermal shutdown
160°C
Thermal shutdown (die temperature)
Thermal shutdown recovery hysteresis
30°C
Note 1: Startup voltage and UVLO are with no external resistor; startup and UVLO can be increased using an external
programming resistor divider – refer to Startup Voltage section of datasheet.
Note 2: With 0.1% tolerance external voltage set resistor. Use 200ppm/°C programming resistor for best thermal stability.
Note 3: Required minimum VIN voltage is typically 50% higher than VOUT to keep good regulation on output over full load
range.
Note 4: Soft-start time can be increased by adding external Css capacitance at the SS pin.
ηEfficiency (VOUT = 5V)

VIN = 12V, TA = 25°C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
3/23

Security E

THPM4601A_Rev.1.20_E

POWER MODULE INFORMATIONFUNCTIONAL BLOCK DIAGRAM for THPM4601A
VCC

3V LDO
VIN

VOUTR1
VOSNS+

CAUX

CIN

R2

Error Amplifier

EN
1.2V

CONTROLLER
AND FET DRIVE

VADJ

PWRGD
COUT

0.6V

VOSNSAGND
PGND

PGND

TRACK/SS

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
4/23

Security E

THPM4601A_Rev.1.20_E

PIN DESCRIPTIONSPIN Name
VIN(A1-A6, B1-B6, C1-C6)
VCC(A7, D9)VOUT(J1-J10, K1-K11, L1-L11, M1M11)
PGND(B7, B9, C7, C9, D1-D6, D8,
E1-E7, E9, F1-F9, G1-G9, H1H9)
AGND(G11, H11, H12)
EN
(A10)
VADJ
(F12)
TRACK/SS(A9)
VOSNS+(J12, L12)VOSNS(M12)NC(A8, A11, A12, B11, C12,
D12, E12, K12)
DNC
(B12, C11)
MTP1, MTP2, MTP3
(C10, D10, D11)
PWRGD
(F11, G12)

Description
Input voltage pins, referenced to PGND. Connect input ceramic capacitors between thesepins and PGND plane, close to the power module.
Internal supply voltage from a 3V LDO in the module, which is referenced to AGND. An
external capacitor is not normally necessary.
Output voltage pins. Connect these pins together onto a copper plane. Connect external
output filter capacitors between these pins and PGND plane, close to the device.
Zero DC voltage output for power circuitry. These pins should be connected directly to
the PCB ground plane. All pins must be connected together externally with a copper plane
directly under the module. Connect to large PGND planes for better heat dissipation.
Zero DC voltage reference for the analog control circuitry. A small analog ground planeis recommended that does not carry load or any other high current. VCC should bereferenced to analog ground.
Enable. When the voltage on this pin is above Enable ON Voltage (V EN_ON), the power
module will be turned on when the power input voltage (VIN) is above start up voltage(VSTART). When EN pin is below Enable Off Voltage (VEN_OFF), the power module will be
off.
Output voltage programming. Connect a resistor between this pin and VOSNS- to set theoutput voltage.
Tracking/soft start. An external capacitor connected between this pin and VOSNS- can beused to increase the soft start time.
Remote sensing (positive). Connect this pin to VOUT close to the load for improved
voltage regulation.
Note: this pin is internally connected to VOUT inside the module, with a 49.9 ohms resistor
to prevent high output voltage in case of feedback loop disconnection outside the module.
Remote sensing (negative). Connect this pin the point of regulation on the load return anddecoupling capacitors (PGND) for proper voltage sensing and regulation. This pin thereference for voltage setting resistor and soft start capacitor.
Note: this pin is not connected to AGND or PGND inside the module and must beconnected externally to PGND.
No connect. There is no connection to these pins. Leave open or connect to PGND
Do not connect: Leave these pins open. Can be used for soldering to open pads.
Mounting pads. These are extra pads for improved soldering and should be left open
circuit.
Power Good, an open drain output. A resistor (10K typical) is connected between PWRGD
and VCC or a 3.3V dc source. PWRGD is high if the output voltage is higher than 92.5% of
the nominal value. It will be pulled down if the output voltage is less than 80% or higher
than 116% of the nominal value.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
5/23

Security E

THPM4601A_Rev.1.20_E

LGA PACKAGE
133 PINS,(TOP VIEW)

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
6/23

Security E

THPM4601A_Rev.1.20_E

TYPICAL EFFICIENCY, POWER LOSS AND REGULATIONVOUT = 5V, TA = 25°C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
7/23

Security E

THPM4601A_Rev.1.20_E

VOUT = 3.3V, TA = 25°C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
8/23

Security E

THPM4601A_Rev.1.20_E

VOUT = 1.8V, TA = 25°C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
9/23

Security E

THPM4601A_Rev.1.20_E

VOUT = 1.2V, TA = 25°C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
10/23

Security E

THPM4601A_Rev.1.20_E

VOUT = 0.6V, TA = 25°C

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
11/23

Security E

THPM4601A_Rev.1.20_E

APPLICATION INFORMATION
Output Voltage Programming
The output voltage is programmed using a resistor RPROG from VADJ to VOSNS-, as shown in Fig. 1. By default, theoutput voltage is 0.6V without a resistor connected. Differential remote sense pins VOSNS+ and VOSNS- should beconnected directly to the output remote sense point as indicated.

SPM1008
THPM4601AVOSNS+

R1
60.4K

VOUT
VOUT

COUT

VADJ
+

RPROG

REF

0.6V

AGND

PGND

VOSNS-

Fig. 1: Output Voltage Programming Circuit
A single standard resistor can be used to program for any of the common voltages shown in Table 1. The V PROG shows
the desired set value for VOUT and VSET shows the actual set value using a standard resistor. For applications requiring amore temperature stable voltage set-point, it is recommended to use programming resistors with 200ppm/°C thermal
coefficient placed close to the module to get almost the same temperature. The programming resistor can be calculated
for any output voltage using equation (1).

𝑅𝑃𝑅𝑂𝐺(𝑘𝛺) = 𝑉

36.24

𝑂𝑈𝑇 −𝑉𝑅𝑒𝑓;

𝑉𝑅𝑒𝑓 = 0.6𝑉

(1)

Table 1 - Output Voltage Programming Resistor
0.6V

0.8V

1.0V

1.2V

1.5V

1.8V

2.5V

3.3V

5V

5.5V

Calculated RPROG

open

181.2kΩ90.6kΩ

60.4kΩ

40.27kΩ30.2kΩ

19.07kΩ13.42kΩ8.24kΩ

7.396kΩStandard 0.1%

NO

182KΩ

90.9KΩ

60.4KΩ

40.20KΩ 30.10KΩ

19.1KΩ

13.3KΩ

8.25KΩ

7.32KΩ

0.6V

0.7991V

0.9987V

1.2V

1.5015V

2.4974V

3.325V

5.020V5.55 V

Output Voltage
VPROG

RPROG
𝐕𝐒𝐄𝐓

1.8040V

Note that the VADJ pin is noise sensitive and the connections to this pin should be kept as short as possible.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
12/23

Security E

THPM4601A_Rev.1.20_E
To further improve the set-point accuracy, two resistors can be used in series or in parallel for R PROG or another RTRIM
resistor can be used between VOSNS+ and VADJ pins as shown Fig. 2. The resulting output voltage after using an
optional RTRIM resistor is given in equation (2).

𝑉𝑂𝑈𝑇 = 𝑉𝑅𝑒𝑓 (1 +𝑅𝑇𝑅𝐼𝑀 ∗60.4𝑘𝛺
(𝑅𝑇𝑅𝐼𝑀 +60.4𝑘𝛺)𝑅𝑃𝑅𝑂𝐺

SPM1008
THPM4601A);

𝑉𝑅𝑒𝑓 = 0.6𝑉

(2)

VOSNS+

R1
60.4K

RTRIM
VOUT
C
VADJ OUT

+

VOUT

RPROG
REF

0.6V

AGND

PGND

VOSNS-

Fig. 2: Output Voltage Trim Circuit

Enable (EN) Control
The EN pin provides an electrical on/off control of the power module. Once the voltage at the EN pin exceeds thethreshold voltage (1.2V typical) or is left open, the power module starts operation when the input voltage is higher than
the input start-up voltage (VSTART).
When the voltage at EN pin is pulled below the threshold voltage (1.0V typical), the switching converter stops switching
and the power module enters low quiescent current state.
If an application requires controlling the EN pin, an open drain or open collector output logic can be used to interface
with the pin, as shown in Fig. 3 , where high ON/OFF signal applied to the transistor (low EN) disables the power module.
An internal 100K pull up resistor is connected between EN and VIN.
When EN pin is open (or connected to a logic high voltage), THPM4601A produces a regulated output voltage following
the application of a valid input voltage. Fig. 4 shows the startup waveform for THPM4601A without EN control. The top
trace is input voltage, the middle trace is Power Good signal (PWRGD), and the bottom trace is the output voltage.
Fig. 5 and Fig. 6 show the typical output voltage waveforms when THPM4601A is turned on and turned off by the EN
pin. In these figures, the top trace is Enable signal (EN), the middle trace is Power Good signal (PWRGD), and thebottom trace is the output voltage.
The startup and shutdown waveforms are similar for other output voltages.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
13/23

Security E

THPM4601A_Rev.1.20_E

Fig. 3: Typical ON/OFF Control

Fig. 4: Typical Power up Start-Up of the THPM4601A without EN control (Vout, set to 5V)

Fig. 5: THPM4601A Enable Turn-On (Vout=5V, Iout=12A)

Fig. 6: THPM4601A Enable Turn-Off (Vout=5V, Iout=12A)

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
14/23

Security E

THPM4601A_Rev.1.20_E

Pre-bias Startup
Some applications require startup when there is a residual pre-bias voltage on the output due to previously charged
capacitors or another bias sources such as ICs with pins connected to other voltage sources. The THPM4601A can startin this condition and as long as the pre-bias voltage is lower than the final output the start-up waveform will be normal.
Fig. 7 illustrates start up with pre-bias of approximately 3.3V when the output voltage is set to 5.0V.

Fig. 7: Start-up with pre-bias 3.3V (VOUT=5V, no load)

Start Up Voltage
By default, the THPM4601A will turn on when the input voltage reaches the startup voltage (VSTART). The THPM4601A
will turn off when the input voltage reduces to below the Under-Voltage Lock-Out (UVLO) level. Startup voltage cannot
be reduced below the values provided in the table of Electrical Characteristics. Startup voltage can be increased using
the EN pin, by an external resistor REN connected between EN and PGND. The value of VSTART is given by equation (3):𝑉𝑆𝑇𝐴𝑅𝑇 = 1.22 ×(100𝑘𝛺+𝑅𝐸𝑁 )

(3)

𝑅𝐸𝑁

Enable input pin has almost 200mV hysteresis, the under-voltage shutdown point is determined by equation (4):𝑈𝑉𝐿𝑂 = 1.02 ×(100𝑘𝛺+𝑅𝐸𝑁 )

(4)

𝑅𝐸𝑁

The value for REN for various start-up voltages is given in Table 2 as well as corresponding UVLO levels:
Table 2 – Startup and Shutdown Voltage
Startup Voltage

2.9V

4V

5V

6V

7V

8V

9V

Calculated REN

open

43.88kΩ32.28kΩ25.52kΩ21.11kΩ17.99kΩ15.68kΩStandard REN

open

44.2kΩ

32.4kΩ

25.5kΩ

21.0kΩ

17.8kΩ

15.8kΩ

Under-voltage shutdown

2.6V

3.33V

4.17V

5.02V

5.88V

6.75V

7.48V

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
15/23

Security E

THPM4601A_Rev.1.20_E

Power Good (PWRGD)
The PWRGD pin is an open drain output. Connect a pull up resistor (10kΩ to 100kΩ) between PWRGD pin and VCC
pin, (or any logic voltage level lower than 3.6V). PWRGD signal becomes high almost 0.8ms after the output voltage
reaches 92.5% of the programmed (set) output voltage. It becomes low when the output voltage is more than 20% below
or more than 16% above the preset output voltage. Sensing output is through VADJ pin.

Soft Start Operation
Soft-start operation is internal to the THPM4601A. By default, the time delay between enabling a module (driving ENhigh) and the moment that PWRGD signal goes high is 2.5ms. That means the internally programmed start-up time is
1.7ms nominal (from asserting EN until Vout reaches 92.5% of its programmed value). Soft start time can be increased
if required using an external capacitor on the SS/TRACK pin. For a soft start time of TSS, the capacitor value, CSS, isgiven by (5):
𝐶𝑠𝑠 (𝑛𝐹) = 60 × 𝑇𝑠𝑠 (𝑚𝑠) − 100(5)For example, a 100nF capacitor will give a soft start time of 3.4ms nominal.

Tracking
If an external voltage is applied to the SS/TRACK pin (referenced to VOSNS-), it acts as a new reference voltage forthe module and replaces the internal 𝑉𝑅𝑒𝑓 = 0.6𝑉. Also, the soft start settings are ignored. The external reference must
be between 0.3V to 1.4V but during startup it must first reach 0.6V or above to ensure proper operation and then it canvary within the 0.3V-1.4V range. This feature is usually used for ramping of output voltage by applying a ramp up
voltage to TRACK/SS pin or to implement tracking between two or more power supplies.

Input and Output Capacitance
Recommended input capacitance is composed of a bulk input capacitance of around 150μF (electrolytic) plus three 22μF
thermally stable ceramic capacitors placed near VIN and PGND pins (at least X5R and 25V ratings). For output
capacitance use four 22μF (X5R, 10V or higher) ceramic capacitors near the module and two parallel 47uF near load.
These arrangements may be modified depending on the load requirements. Too low or too high capacitance on input or
output or improper placement of capacitors can deteriorate the performance of the module.

Switching Frequency
The switching frequency is not adjustable and is internally set to be at 1 MHz typical. The frequency may change with
the input voltage, output voltage, load or temperature. It may go down to as low as 700KHz range in very light load to
reduce losses; or may increase to above 1.3MHz at full load and high temperature. Variations are relatively small at
higher output voltage settings (Typically less than 10% for Vout>1.8V).

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
16/23

Security E

THPM4601A_Rev.1.20_E

Application Schematics
Fig. 8 shows a typical application schematic for 12V input and 3.3V output. Startup voltage is set to 9V using the resistor
REN with value of 15.8k. If required, a MOSFET can also be connected to the EN pin, as shown in Fig.3 to provide onoff control.

PWRGD

VCC

VOSNS+

VOUT

V IN

3.3V

VOUT

4V to 16V

VIN

CIN2

CIN1

150µF

3×22µF

THPM4601A
SPM10084x22+2x47µF

V OUT
RTN

EN

REN
15.8k

COUT1
VADJ
PGND

SS/TRACKAGNDVOSNS-

RPROG
13.3k

Fig. 8: Typical schematic for VIN = 12V, VOUT = 3.3V with start-up voltage set to 9V

Sequencing Operation
The term sequencing is used when two or more separate modules or power supplies are configured to start one after theother, in sequence.
Sequencing operation between two or more THPM4601A power modules can be implemented with PWRGD pin andEN pin. Fig. 9 shows an example configuration when one THPM4601A (5.0V output) starts first and a second
THPM4601A (2.5V output) starts after the output voltage of the first one has reached 5.0V. In this case, the Power Goodsignal (PWRGD) of the first module turns the second module ON through the EN pin.
The THPM4601A can start in sequence with another THPM4601A or any other POL having a compatible Power Good
output or Enable input.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
17/23

Security E

THPM4601A_Rev.1.20_E

EN

VOUT

VOUT1
5.0V

THPM4601A
SPM1008#1 VADJVOUT

THPM4601A
SPM1008#2 VADJ
RPROG
8.25k

PWGRD

EN

VOUT2
2.5V

RPROG
19.1k

PWGRD

Fig. 9: Sequential Startup of two THPM4601A modules.

Fig.10 shows the output voltage waveforms of two THPM4601A modules used in sequential start-up mode. It showsthat PWRGD signal (top trace) becomes high when the first THPM4601A enters into regulation (middle trace), and thenthe second THPM4601A starts up (bottom trace).

Fig. 10: Typical sequential startup waveform, VOUT1 = 5V, VOUT2 = 2.5V.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
18/23

Security E

THPM4601A_Rev.1.20_E

Transient Response
Fig.11 shows the measured transient waveform for a step change between 3A and 9A (6A step), for output voltage settingof 1.8V and input voltage of 12V. The slew rate for the load current change is 1A/µs. The peak transient voltage isapproximately 28mV with a recovery time of 20μs.

Fig. 11: Transient Response (VIN = 12V, VOUT = 1.8V) Slew rate 1A/μs

Over Current Protection
For protection against over-current faults, THPM4601A will shut down when the load current is higher than the overcurrent protection (OCP) level. During an over-current condition, THPM4601A will normally operate in hiccup mode
and will try to re-start automatically. The hiccup operation will continue until the over-current condition is removed or
input power is removed.
Fig. 12 shows the output voltage and output current waveforms during over-current protection operation for
THPM4601A set to 5V output. Performance at other output voltage settings is similar. When the over-current condition
is removed, the output voltage recovers automatically to the nominal voltage, as shown in Fig. 13

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
19/23

Security E

THPM4601A_Rev.1.20_E

Fig. 12: Overcurrent protection (hiccup mode)

Fig. 13: Recovery from overcurrent

Input protection
In most applications, the input power source provides current limiting (typically fold-back or hiccup mode) and as longas the average fault current is limited to almost 10A or less, no further protection is required.
If the THPM4601A is powered from a battery or other high current source, it is recommended to include an externalfuse (maximum 10A) in the input to the module. The THPM4601A includes full protection against output overcurrent
or short-circuit, and the fuse will not operate under any output overload condition.

Thermal Considerations
The maximum continuous current rating depends on the ambient temperature and the airflow, as shown in Fig. 14. Output
current can exceed the derated value for short periods.
The maximum rating is also influenced by the PCB layout; thermal performance can be improved by using more copperon the motherboard.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
20/23

Security E

THPM4601A_Rev.1.20_E

Maximum Current (A)1210Natural convection

8

6
4
2
0
0

10

20

30

40 50 60 70
Temperature ( C)80

90

Fig. 14: Derating output current (12Vin, 5Vout). Less derating is needed for lower output voltages.
The absolute maximum operating junction temperature is 170°C and it is recommended to keep the operating temperature
well below this value under worst-case conditions. Maximum recommended internal junction temperature is 125°C.
Thermal resistance from junction to ambient (θJA) is approximately 15°C/watt, measured on the EVM. The thermal
resistance from case to ambient (θCA) depends on the PCB layout as well as the amount of cooling airflow.
The THPM4601A implements an internal thermal shutdown to protect itself against over-temperature conditions. If thejunction temperature of the power MOSFET reaches approximately 160°C, the power module stops operating to protect
itself from thermal damage. With a hysteresis of 30°C, when the temperature reduces to approximately 130°C, the
THPM4601A will restart automatically.

Layout Considerations
To achieve optimal electrical and thermal performance, an optimized PCB layout is required. Some considerations foran optimized layout are:








Use large copper areas for power planes (VIN, VOUT, and PGND) to minimize conduction loss and thermal
stress;Place ceramic input and output capacitors close to the module pins to minimize high frequency noise. Share thesame location on the PGND plane near module for the return paths of input and output capacitor currents andminimize the loop area between them;
Locate additional output capacitors between the main ceramic capacitor and the load, placement of output
capacitors can affect the performance of the module; use smaller ceramic capacitors closer to the module.
Do not connect AGND and PGND planes as they are already connected inside the module;
Place resistors and capacitors connected to VSENSE and VADJ pins as close as possible to their respective pins;
Keep VOSNS+ and VOSNS- traces short, parallel and away from noisy areas. Avoid vias in their path to the load.
Do not connect NC pins to other components;
Use multiple vias to connect the power planes to internal layers.

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
21/23

Security E

THPM4601A_Rev.1.20_E

Package Dimensions and PCB pads
ALL DIMENSIONS IN MILLIMETERSFLATNESS OF LGA PLANE: MAX 0.1mm

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
22/23

Security E

THPM4601A_Rev.1.20_E

Notices and Requests
1.

The product specifications described in this material are subject to change without prior notice.

2.

The circuit diagrams described in this material are examples of the application which may not always apply to the customer’s design. THine
Electronics, Inc. (“THine”) is not responsible for possible errors and omissions in this material. Please note even if errors or omissions
should be found in this material, THine may not be able to correct them immediately.

3.

This material contains THine’s copyright, know-how or other intellectual property rights. Copying, reverse-engineer or disclosing to third
parties the contents of this material without THine’s prior written permission is prohibited.

4.

THINE ACCEPTS NO LIABILITY FOR ANY DAMAGE OR LOSS IN CONNECTION WITH ANY DISPUTE RELATING TO
INTELLECTUAL PROPERTY RIGHTS BETWEEN THE USER AND ANY THIRD PARTY, ARISING OUT OF THIS PRODUCT,EXCEPT FOR SUCH DAMAGE OR LOSS IN CONNECTION WITH DISPUTES SUCCESSFULLY PROVED BY THE USER THATSUCH DISPUTES ARE DUE SOLELY TO THINE. NOTE, HOWEVER, EVEN IN THE AFOREMENTIONED CASE, THINEACCEPTS NO LIABILITY FOR SUCH DAMAGE OR LOSS IF THE DISPUTE IS CAUSED BY THE USER’S INSTRUCTION.

5.

This product is not designed for applications that require extremely high-reliability/safety such as aerospace device, nuclear power control
device, or medical device related to critical care, excluding when this product is specified for automotive use by THine and used it for that
purpose. THine accepts no liability whatsoever for any damages, claims or losses arising out of the uses set forth above.

6.

Despite our utmost efforts to improve the quality and reliability of the product, faults will occur with a certain small probability, which isinevitable to a semi-conductor product. Therefore, you are encouraged to have sufficiently fail-safe design principles such as redundant or
error preventive design applied to the use of the product so as not to have our product cause any social or public damage.

7.

This product may be permanently damaged and suffer from performance degradation or loss of mechanical functionality if subjected toelectrostatic charge exceeding capacity of the ESD (Electrostatic Discharge) protection circuitry. Safety earth ground must be provided toanything in contact with the product, including any operator, floor, tester and soldering iron.

8.

Please note that this product is not designed to be radiation-proof.

9.

Testing and other quality control techniques are used to this product to the extent THine deems necessary to support warranty for
performance of this product. Except where mandated by applicable law or deemed necessary by THine based on the user’s request, testingof all functions and performance of the product is not necessarily performed.

10. This product must be stored according to storage method which is specified in this specifications. THine accepts no liability whatsoever for
any damage or loss caused to the user due to any storage not according to above-mentioned method.
11. Customers are asked, if required, to judge by themselves if this product falls under the category of strategic goods under the Foreign
Exchange and Foreign Trade Act in Japan and the Export Administration Regulations in the United States of America on export or transit ofthis product. This product is prohibited for the purpose of developing military modernization, including the development of weapons ofmass destruction (WMD), and the purpose of violating human rights.
12. The product or peripheral parts may be damaged by a surge in voltage over the absolute maximum ratings or malfunction, if pins of the
product are shorted by such as foreign substance. The damages may cause a smoking and ignition. Therefore, you are encouraged to
implement safety measures by adding protection devices, such as fuses. THine accepts no liability whatsoever for any damage or loss caused
to the user due to use under a condition exceeding the limiting values.
13. All patents or pending patent applications, trademarks, copyrights, layout-design exploitation rights or other intellectual property rights
concerned with this product belong to THine or licensor(s) of THine. No license or right is granted to the user for any intellectual property
right or other proprietary right now or in the future owned by THine or THine’s licensor. The user must enter into a license agreement with
THine or THine’s licensor to be granted of such license or right.

THine Electronics, Inc.
https://www.thine.co.jp

THine Electronics, Inc.

Copyright©2023 THine Electronics, Inc.
23/23

Security E