IRAUDPS3 datasheet(2/20 Pages) IRF

2 / 20 page

Rev. 1.2

6/23/2015

International Rectifier

Page 2 of 20

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.

Table of Contents

INTRODUCTION........................................................................................................................3

IRS27951/2 DESCRIPTION.......................................................................................................3

EVALUATION BOARD SPECIFICATIONS ................................................................................4

3.1 Board Description ...................................................................................................................5

3.2 Schematic...............................................................................................................................6

3.3 Board PCB Layout ..................................................................................................................7

3.4 Bill of Materials .......................................................................................................................8

EVALUATION BOARD OPERATING PROCEDURE ...............................................................10

4.1 Load Connection ..................................................................................................................11

4.2 AC Input................................................................................................................................11

4.3 IRS27952 DC Supply Voltage ..............................................................................................11

4.4 Disconnect the Board ...........................................................................................................11

SYSTEM PERFORMANCE CHARACTERIZATION ................................................................12

5.1 Primary Waveforms ..............................................................................................................12

5.2 Dynamic Load Response and Regulation Waveforms..........................................................13

Test Conditions: Full Load (2A to +B and -B); No Load (0A).........................................................13

5.3 Output Waveforms with Audio Amplifier Load ......................................................................14

5.4 Output Ripple........................................................................................................................18

5.5 Efficiency ..............................................................................................................................18

5.6 Thermal Data ........................................................................................................................19

Transformer Spec.....................................................................................................................20

6.1 Electrical Diagram.................................................................................................................20

6.2 Resonant Transformer Winding Characteristics ...................................................................20

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