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Contents
Contents ........................................................................................................ 3 ?
1 ? Overview .................................................................................................. 4 ?
1.1 ? Introduction to PoE................................................................................................................................ 4 ?
2 ? Detailed description................................................................................. 5 ?
2.1 ? POE_12V_JS_0 ...................................................................................................................................... 5 ?
2.1.1 ? Mechanical .......................................................................................................................................................... 5 ?
2.1.2 ? Flyback Transformer ......................................................................................................................................... 6 ?
2.1.3 ? Current Limit / Current Sense .......................................................................................................................... 7 ?
2.1.4 ? Working Frequency ............................................................................................................................................ 7 ?
2.1.5 ? Error Amplifier................................................................................................................................................... 7 ?
2.2 ? PoE module usage................................................................................................................................... 7 ?
3 ? Connectors pinout.................................................................................... 8 ?
3.1 ? Connector P1 .......................................................................................................................................... 8 ?
3.2 ? Connector P2 .......................................................................................................................................... 8 ?
4 ? Application notes from National Semiconductors .................................. 9 ?
3
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