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TOP245P Datasheet(PDF) 2 Page - Power Integrations, Inc. |
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TOP245P Datasheet(HTML) 2 Page - Power Integrations, Inc. |
2 / 35 page DER-18 DVD Recorder Supply – TOP245P March 30, 2004 Page 2 of 35 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Table Of Contents 1 Introduction................................................................................................................. 3 2 Power Supply Specification ........................................................................................ 4 3 Schematic................................................................................................................... 5 4 Bill Of Materials .......................................................................................................... 8 5 Layout....................................................................................................................... 10 6 Transformer Specification......................................................................................... 11 Electrical Diagram........................................................................................................ 11 6.2 Electrical Specifications ........................................................................................ 12 6.3 Materials ............................................................................................................... 12 6.4 Transformer Build Diagram................................................................................... 13 6.4.1 WDG5/6 Copper Foil build diagram: .............................................................. 13 6.5 Transformer Construction ..................................................................................... 14 7 Transformer Spreadsheets....................................................................................... 15 8 Performance Data .................................................................................................... 19 8.1 Efficiency .............................................................................................................. 19 8.2 Cross Regulation .................................................................................................. 20 8.2.1 Nominal load.................................................................................................. 20 8.2.2 Peak Load (One output at a time).................................................................. 20 9 Thermal Performance............................................................................................... 23 10 Waveforms ............................................................................................................... 24 10.1 Drain Voltage and Current, Normal Operation .................................................. 24 10.2 Drain Voltage and Current Start-up Profile........................................................ 24 10.3 Output Start-up Profile...................................................................................... 25 10.4 Load Transient Response (Load Step).............................................................. 26 11 Output Ripple Measurements................................................................................... 27 11.1.1 Ripple Measurement Technique .................................................................... 27 11.1.2 Measurement Results.................................................................................... 28 12 Conducted EMI......................................................................................................... 32 12.1 EMI@230V........................................................................................................ 32 12.2 EMI@115V........................................................................................................ 33 13 Revision History ....................................................................................................... 34 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. |
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