International Rectifier IRAC27951 User Manual Download Page 8

Rev. 4.0    5/22/2010 

International Rectifier 

Page 8 of 16 

PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed 
to others for manufacture or any other purpose except as specifically authorized in writing by 

INTERNATIONAL RECTIFIER.

 

 

 

3.6  Bill of Materials 

Designator

Description

Quantity

Value/R ating

Vendor

Part#

B1

Single Phase Bridge Rectifier

1

600V/4A

DIGIKEY

GBU 4J-BPMS-ND

C1, C2

X2 Safety Capacit or

2

100nF/275VAC

DIGIKEY

P10524-ND

C3

Metal Poly  Capacitor

1

0.33uF/630V

DIGIKEY

P12245-ND

C4

Elect rolytic Bulk  Capacitor TS-HC

1

270uF/450V

DIGIKEY

EET-HC2W271LA

Cbs

1206 General Purpose Ceramic SMD

1

220nF/50V

DIGIKEY

490-1776-1-ND 

Cf 2, C out5, C out9, C Vcc2

1206 General Purpose Ceramic SMD

4

100nF/50V

DIGIKEY

490-1775-1-ND 

CD C

Elect rolytic Capacitor FM Radial

1

33uF/35V

DIGIKEY

P13475-ND

Cf 1

Not Used

Cout1, Cout2, Cout3,  Cout4

Aluminium Electrolytic Capacitor 105°C

4

1000uF/35V

DIGIKEY

565-1581-ND

Cout6, Cout7

Aluminium Electrolytic Capacitor 105°C

2

1500uF/25V

DIGIKEY

565-1557-ND

Cout8

Aluminium Electrolytic Capacitor 105°C

1

1000uF/ 25V

DIGIKEY

565-1555-ND

Cr

Polypropylene C apacitor High R ipple

1

22nF/1kV

DIGIKEY

495-3552-ND

Cs

250VAC  Y1 Safety Ceramic Disc Capacitor

1

2.2nF/250V

DIGIKEY

445-2411-ND

CSS, CVcc1

1206 General Purpose Ceramic SMD

2

1uF/25V

DIGIKEY

445-1592-1-ND 

CT

1206 General Purpose Ceramic SMD  ±5%

1

390pF/50V

DIGIKEY

478-1487-1-ND

D1, D2

TO220AB Power Schottky R ectifier

2

100V/30A

DIGIKEY

V30100S-E3/45GI-ND

D3, D4

TO220AC Power Schottky Rectifier

2

40V/20A

DIGIKEY

20TQ040PBF-ND

D5, Dg1, Dg2,  DSS

Fast  Recovery Diode DO-35

4

75V/0.3A

DIGIKEY

1N4148DICT-ND

Dbs

Fast  Recttifier diode SMB

1

600V/1A

DIGIKEY

MUR S160-FDI CT-ND

Dz

Zener Diode SMD

1

18V/0.5W

DIGIKEY

FLZ18VCCT-ND

F1

FUSE IEC FA LBC  5x20

1

250V/5A

DIGIKEY

F239 5-ND

JP1

CONN  HEAD ER  3POS 0.156 VERT TIN

1

DIGIKEY

WM4621-ND

JP3

CONN  HEAD ER  2POS 0.1 VERT TIN

1

DIGIKEY

WM4200-ND

JP4, JP5

CONN  HEAD ER  6POS 0.156 VERT TIN

2

DIGIKEY

WM4624-ND

L1

EMI  Common Mode Choke

1

16mH/2.6A

DIGIKEY

237-1233-ND

Lf 1, Lf2

PCV Series Drum Core Inductor  10mm

2

3.3uH/10A

COILCR AFT

PCV0332-10L

Q1,  Q2

TO-220FP  N-Channel Power MOSFET

2

500V/12A

DIGIKEY

STF13NM50N

R1, Rbias2, Rgs1, R gs2

Not Used

Rbias1, Rled1

1206 SMD Film R ED 1/4W 1%

2

2.2k

DIGIKEY

RHM2.20kFCT-ND

Rdisch

Metal Film Power  Resistor 2W  5%

1

510k

DIGIKEY

BC510KW -2CT-ND

Rf 2

1206 SMD Film R ED 1/4W 1%

1

47k

DIGIKEY

RHM47. 0kFCT-ND

Rg1, R g2

1206 SMD Film R ED 1/4W 1%

2

22

DIGIKEY

RHM22. 0FCT-ND

Rled2

1206 SMD Film R ED 1/4W 1%

1

5.6k

DIGIKEY

RHM5.60kFCT-ND

RMAX

1206 SMD Film R ED 1/4W 1%

1

15k

DIGIKEY

RHM15. 0kFCT-ND

RN TC

Inrush Current Limiter

1

5

DIGIKEY

495-2093-ND

Rprl1

Metal Film Power  Resistor 2W  5%

1

560

DIGIKEY

PPC560W -2CT-ND

Rprl2

Metal Film Power  Resistor 2W  5%

1

470

DIGIKEY

PPC470W -2CT-ND

Rs1

1206 SMD Film R ED 1/4W 1%

1

33k

DIGIKEY

RHM33. 0KFCT-ND

Rs2

1206 SMD Film R ED 1/4W 1%

1

0

DIGIKEY

P0.0ECT-ND

Rs3

1206 SMD Film R ED 1/4W 1%

1

3.74k

DIGIKEY

RHM3.74KFCT-ND

Rs4

1206 SMD Film R ED 1/4W 1%

1

15k

DIGIKEY

RHM15. 0KFCT-ND

Rs5,  RSS

1206 SMD Film R ED 1/4W 1%

2

3.9k

DIGIKEY

RHM3.90KFCT-ND

Rstart 1, Rstart2, Rstart3

1206 SMD Film R ED 1/4W 1%

3

270k

DIGIKEY

RHM270KFC T-N D

RT

1206 SMD Film R ED 1/4W 1%

1

18k

DIGIKEY

RHM18. 0KFCT-ND

Rvcc

1206 SMD Film R ED 1/4W 1%

1

22

DIGIKEY

RHM22. 0FCT-ND

Rx1, Rx2

1206 SMD Film R ED 1/4W 1%

2

4.7

DIGIKEY

311-4.70FRCT-ND

TX

Resonant Power Transformer

1

ETD49

PRECISION  INC

019-4974-00R

U1

IRS27951 Control IC

1

IR

IRS27951S

U2

Phot ocoupler  TRANS-OUT  4-DIP

1

TLP621

DIGIKEY

TLP621FT-ND

U3

Programmable Voltage Regulator SOT23-3

1

TL431

DIGIKEY

296-17328-1-ND

W1

Jumper for Primary Current Sensing Loop

1

AWG20

 

Summary of Contents for IRAC27951

Page 1: ...ed therein are proprietary and are not to be reproduced used or disclosed to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER Energy...

Page 2: ...Evaluation Board Picture 6 3 4 Board Component Placement 6 3 5 Board PCB Layout 7 3 6 Bill of Materials 8 4 EVALUATION BOARD OPERATING PROCEDURE 9 4 1 Load Connection 9 4 2 AC DC Input 10 4 3 IRS27951...

Page 3: ...me is programmed using CT RSS and CSS program the converter soft start time RSS RT and CT program the converter start up frequency The converter maximum frequency is set by Rmax RT and CT Sleep mode i...

Page 4: ...m converter is a multi resonant half bridge LLC converter whose control is implemented with the IRS27951 U1 controller HVIC The controller drives the two half bridge MOSFETs with a 50 percent fixed du...

Page 5: ...1uF 275V X2 265VAC N 1 2 JP1 Header 3 1 RT 610uH Dg1 1N4148 Rgs1 DNP D1 V30100S D3 20TQ040 W1 Jumper U3 TL431 DNP Do not Populate L1 t RNTC 5 DNP Do NotP opulate 3 3uH 10A Lf2 C2 0 1uF 275V X2 C3 0 33...

Page 6: ...erein are proprietary and are not to be reproduced used or disclosed to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER 3 3 Evaluati...

Page 7: ...document and the information contained therein are proprietary and are not to be reproduced used or disclosed to others for manufacture or any other purpose except as specifically authorized in writin...

Page 8: ...160 FDICT ND Dz Zener Diode SMD 1 18V 0 5W DIGIKEY FLZ18VCCT ND F1 FUSE IEC FA LBC 5x20 1 250V 5A DIGIKEY F2395 ND JP1 CONN HEADER 3POS 0 156 VERT TIN 1 DIGIKEY WM4621 ND JP3 CONN HEADER 2POS 0 1 VERT...

Page 9: ...of this board may result in serious injury or death 4 1 Load Connection Connect a resistive or electronic load capable of 150W continuous power on the 24V rail to connector JP4 and a 75W continuous po...

Page 10: ...e The board is self supplied by startup circuit and auxiliary winding of transformer The startup circuit starts to work once AC or DC input voltage applies to the board However the Vcc will be stable...

Page 11: ...r manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER 5 SYSTEM PERFORMANCE CHARACTERIZATION Test Conditions VIN 400V DC Full Load 24V 6A 12V 6A No...

Page 12: ...ort Circuit Protection IRS27951 uses high voltage technology to sense the current in the low side MOSFET The voltage at the VS node is sensed when the low side device is turned ON and the system shuts...

Page 13: ...rom full load to no load and no load to full load was applied to test the dynamic response of the system The output voltage is tightly regulated within a 3 regulation band over the entire line load ra...

Page 14: ...tem power management functions for reducing overall standby power consumption by disabling the down converter when no power is being requested by the converter main output voltage rails Ch 1 Low side...

Page 15: ...30 0 150 0 170 0 190 0 210 0 Efficiency Output Power W Efficienyvs Output Power 400Vdc input 270Vac input Figure 8 Efficiency plot 5 6 Thermal Data The thermal performance of IRS27951 demo board is te...

Page 16: ...ctrical Diagram 9 7 14 17 20 11 13 19 2 5 18 12 TX Note pin19 is shorted to pin18 on PCB pin13 is shorted to pin12 on PCB 6 2 Resonant Transformer Winding Position on Coil former 6 3 Resonant Transfor...

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