EPR-93 Datasheet, PDF (3/40 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 93 - 32 W/81 W Peak Supply Using PeakSwitch- (PKS606Y)

22-Jun-2006
EP-93 – 30 V, 1.07 A, 2.7 A (peak), Universal Input Supply
Table Of Contents
1 Introduction .................................................................................................................5
2 Power Supply Specification ........................................................................................6
3 Schematic ...................................................................................................................7
4 Circuit Description.......................................................................................................8
4.1 Input EMI Filtering................................................................................................8
4.2 PeakSwitch Primary.............................................................................................8
4.3 Output Rectification and Filtering.........................................................................9
4.4 Output Feedback .................................................................................................9
4.5 Output Protection.................................................................................................9
5 PCB Layout...............................................................................................................10
6 Bill Of Materials.........................................................................................................11
7 Transformer Specification .........................................................................................13
7.1 Electrical Diagram..............................................................................................13
7.2 Electrical Specifications .....................................................................................13
7.3 Materials ............................................................................................................14
7.4 Transformer Build Diagram................................................................................14
7.5 Transformer Construction ..................................................................................15
8 Transformer Spreadsheet .........................................................................................16
9 Performance Data.....................................................................................................19
9.1 Efficiency ...........................................................................................................19
9.1.1 Active Mode CEC Measurement Data........................................................19
9.2 No-load Input Power ..........................................................................................21
9.3 Available Standby Output Power .......................................................................21
9.4 Regulation .........................................................................................................22
9.4.1 Load Regulation .........................................................................................22
9.4.2 Line Regulation...........................................................................................22
10 Thermal Performance............................................................................................23
11 Waveforms ............................................................................................................24
11.1 Drain Voltage and Current, Normal Operation...................................................24
11.2 Output Voltage Start-up Profile ..........................................................................24
11.3 Drain Voltage and Current Start-up Profile ........................................................25
11.4 Load Transient Response (1 A to 2 A Load Step) .............................................25
11.5 Holdup Time ......................................................................................................26
11.6 AC Line Disturbance..........................................................................................27
12 Output Ripple Measurements................................................................................30
12.1.1 Ripple Measurement Technique.................................................................30
12.1.2 Measurement Results.................................................................................31
13 Output Over-current Shutdown/Restart .................................................................32
14 Line Surge.............................................................................................................33
15 Conducted EMI .....................................................................................................34
16 Appendix ...............................................................................................................36
16.1 Heat Sink Drawing .............................................................................................36
17 Revision History ....................................................................................................37
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