DER-52 Datasheet, PDF (2/26 Pages) Power Integrations, Inc. – 3.9W Power Supply using TNY263P

DER-52
TNY263 Multi Output
April 20, 2005
Table Of Contents
1 Introduction................................................................................................................. 3
2 Power Supply Specification ........................................................................................ 4
3 Schematic................................................................................................................... 5
4 Circuit Description ...................................................................................................... 6
4.1 TinySwitch-II Primary .......................................................................................... 6
4.2 Output Rectification ............................................................................................. 6
4.3 Output Feedback................................................................................................. 6
5 PCB Layout ................................................................................................................ 7
7 Transformer Specification........................................................................................... 9
7.1 Electrical Diagram ............................................................................................... 9
7.2 Electrical Specifications....................................................................................... 9
7.3 Materials.............................................................................................................. 9
7.4 Transformer Build Diagram ............................................................................... 10
7.5 Transformer Construction.................................................................................. 10
8 Transformer Spreadsheets....................................................................................... 11
9 Performance Data .................................................................................................... 13
9.1 Efficiency........................................................................................................... 13
9.2 No-load Input Power.......................................................................................... 13
9.3 Regulation ......................................................................................................... 14
9.3.1 Load ........................................................................................................... 14
9.3.2 Line ............................................................................................................ 14
9.3.3 Cross Regulation........................................................................................ 15
10 Thermal Performance ........................................................................................... 16
11 Waveforms............................................................................................................ 17
11.1 Drain Voltage and Current, Normal Operation .................................................. 17
11.2 Output Voltage Start-up Profile ......................................................................... 17
11.3 Drain Voltage and Current Start-up Profile........................................................ 18
11.4 Load Transient Response (75% to 100% Load Step) ....................................... 19
11.5 Output Ripple Measurements............................................................................ 21
11.5.1 Ripple Measurement Technique ................................................................ 21
11.5.2 Measurement Results ................................................................................ 22
12 Conducted EMI ..................................................................................................... 23
13 Revision History.................................................................................................... 25
Important Note:
Although this board is designed to satisfy safety isolation requirements, the engineering
prototype has not been agency approved. Therefore, all testing should be performed
using an isolation transformer to provide the AC input to the prototype board.
Design Reports contain a power supply design specification, schematic, bill of materials,
and transformer documentation. Performance data and typical operation characteristics
are included. Typically only a single prototype has been built.
Page 2 of 26
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