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AN3118 Scheda tecnica(PDF) 2 Page - STMicroelectronics |
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AN3118 Scheda tecnica(HTML) 2 Page - STMicroelectronics |
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2 / 31 page ![]() Contents AN3118 2/31 Doc ID 16847 Rev 2 Contents 1 Main characteristics and circuit description . . . . . . . . . . . . . . . . . . . . . 4 2 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Test results and significant waveforms . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1 Harmonic content measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.2 MOSFET current, TM signals, and L6563H THD optimizer . . . . . . . . . . . 13 4.3 Voltage feed-forward and brown-out function . . . . . . . . . . . . . . . . . . . . . . 15 4.4 Startup operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.5 PFC_OK pin and feedback failure (open-loop) protection . . . . . . . . . . . . 20 4.6 Power management and housekeeping functions . . . . . . . . . . . . . . . . . . 22 5 Layout hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6 Thermal map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7 EMI filtering and conducted EMI pre-compliance measurements . . . 27 8 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 |
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