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AN4006 Datasheet(PDF) 2 Page - STMicroelectronics |
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AN4006 Datasheet(HTML) 2 Page - STMicroelectronics |
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2 / 19 page ![]() Contents AN4006 2/19 Doc ID 022454 Rev 1 Contents 1 High-power PoE converter electrical specifications . . . . . . . . . . . . . . . 4 2 High-power converter schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1 Efficiency measurements with synchronous rectification . . . . . . . . . . . . . 10 4.2 Converter waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2.1 Startup sequence using PowerDsine 9501G injector . . . . . . . . . . . . . . 12 4.2.2 Primary-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.2.3 Secondary-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.2.4 Output ripple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.2.5 Gloop measurement and load transient response . . . . . . . . . . . . . . . . . 17 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 |
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