TAMURA
Power Modules ?

Table of Contents
Five Key advantage

P2Stand- Power (efficiency)

P3

Noise reduction

P4

Supply Chain Management

P5

Size improvement

P6

Time to market

P7

Product Lineup

P8

Functions

P9

External Dimensions
EPM

P10

SPM

P11

BPM

P12

Key Features / Applications

P13

Example of Mounting

P14

1

Five Key advantage①

Improve Efficiency②

Improve Noise③

Improve SCM④

Improve Form-Factor⑤

Improve time to market

2Concerns about Energy Efficiency…

Improving
Energyefficiency…

Complying withenergy
regulations …

Solution !!

①Improve Stand-by PowerStandby Energy (mW)Compliance with standby energy regulations(Example: EPM0510SJ)
150
Eu CoC regulations (Tier 1) to be enforced in 2015
USA DoE regulations to be enforced in 2015
Eu CoC regulations (Tier 2) to be enforced in 2017
EPM0510SJ

150mW

100100mW

75mW

50

EPM0510SJ

0
100

150

200

250

300

350

400

450

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3

Concerns about Noise and Vibration Sound …

We want toreduce humming
sound in power
supply.

Is there a way toreduce it?

Solution !!

②Improve Audible Noise level

Humming sound is reduced byTamura s unique structure.
dB
Conventional Power Supply
Power module

Humming soundreduced toMax 1/60

20Hz

Audio frequency range

20kHz(Comparison with Tamura s previous Power Module)
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4

Component Management is Troublesome …
Concerns about Component Management …

Management of
discontinued
components istroublesome.

We want to simplify
componentmanagement.

Solution !!

③Easy Management(Example: Substrate sample)
Primary side

Replaced
components

Secondaryside

TOTAL

EPM

6

1

310Discrete
component

26

11138

When discrete components are used,

When the power supply module is used,

29 components need to be prepared.

1 component needs to be prepared!

A comparison of
the number ofcomponents

29：1(Comparison with Tamura s previous Power Module)

5Concerns about Size …

Substrates should
be as small as
possible…
What should we do …?

Mounting spaceis limited.

Solution !!

④

Compact Form-Factor

Discrete components having
the same functions as EPM

EPM

Area ratio

1：2
S=33mm X 31mm
=1023mm2

S=38mm X 53mm=2014mm2

50%Less!!
(Comparison with Tamura s previous Power Module)

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6

Concerns about Time Required forDevelopment/Design …
No humanResource areleft to design
standby power
supplies.

Productdevelopment
cycle is short …

Solution !!

⑤

Facilitates Circuit Design

Development/design Human Resource can be reduced.
Support provided by application note

Externalcomponent
designReduced by approx.

External
component
design80%

80020406080

100

Transformerdesign,circuitdesign,controlICevaluation,heatreleasedesign,substrate
design,EMI/EMCevaluation,applicationforapprovalofsafetystandards,
component/materialarrangementforindividualprototypes,etc.
(Comparison with Tamura s previous Power Module)

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7Product Lineup

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8Functions㻰㻯㻌㻻㼁㼀㻰㻯㻌㻵㻺㻰㼕㼛㼐㼑㻻㼂㻼㼂㼏㼏㻵㼚㼟㼡㼘㼍㼠㼕㼛㼚㼠㼞㼍㼚㼟㼒㼛㼞㼙㼑㼞㻻㻯㻼㻲㻱㼀㻯㼛㼚㼠㼞㼛㼘㻵㻯㼂㼛㼘㼠㼍㼓㼑㼟㼑㼚㼟㼕㼚㼓㻌㻼㼔㼛㼠㼛㻙㼏㼛㼡㼜㼘㼑㼞㻻㼀㻼Internal parts and functions
・ Insulation Transformer
・ Isolated Transformer （FET）
・ IC control
・ Output rectifier diode・ Photo-coupler
・ Output voltage detection circuit・ Primary side control circuit
・ Over voltage protection
・ Over current protection
・ Heating protection circuit

Switching Power
Supply can beeasily createdPowerModule㻱㻼㻹

9

SPM External Dimensions

SPM Recommended Hole Diameter/Land Dimensions

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EPM External Dimensions)(67\SH

EPM Recommended Hole Diameter/Land Dimensions)(67\SH

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BPM External Dimensions

BPM Recommended Hole Diameter/Land Dimensions

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12

Features
１．Easy to design compact AC/DC due to small number of external components
２． Potential design evaluation time savings; EMC, open/short circuit testing, & etc.
３． Enables significant reduction in power consumption of no-load and light load
４． Corresponding world wide input and PFC output voltage
５． Unique Tamura design insures significant reduction inbuzz

under light-loadconditions for lower noise level

Applications
Consumer electronics, Information processing equipment, AV equipment ,Stand-by Power5()5,*(5$7250,&52:$9(29(1$972,/(7$5<60$570(7(5/('/,*+7,1*

836*(1(5$/,19(57(539,19(57(52$$,5&21',7,21(513Example of Application

14http://www.tamura-ss.co.jp/electronics/en/