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DER-42 Datasheet(PDF) 2 Page - Power Integrations, Inc. |
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DER-42 Datasheet(HTML) 2 Page - Power Integrations, Inc. |
2 / 19 page DER-42 Portable CD Player – LNK520P November 18, 2004 Table Of Contents 1 Introduction .................................................................................................................3 2 Power Supply Specification ........................................................................................4 3 Schematic ...................................................................................................................5 4 Circuit Description.......................................................................................................6 4.1 Input EMI Filtering................................................................................................6 4.2 LinkSwitch Primary ..............................................................................................6 4.3 Output Rectification .............................................................................................6 5 PCB Layout.................................................................................................................7 6 Bill Of Materials...........................................................................................................8 7 Transformer Specification ...........................................................................................9 7.1 Transformer Winding ...........................................................................................9 7.1.1 Electrical Specifications................................................................................9 8 Transformer Spreadsheet .........................................................................................10 9 Performance Data.....................................................................................................12 9.1 Efficiency ...........................................................................................................12 9.2 No-load Input Power ..........................................................................................13 9.3 Output Voltage Regulation.................................................................................13 9.4 Output Ripple Measurements ............................................................................14 9.4.1 Ripple Measurement Technique.................................................................14 10 AM Radio Reception Test .....................................................................................15 11 Conducted EMI .....................................................................................................16 12 Revision History ....................................................................................................18 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 19 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com |
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