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AN3027 Scheda tecnica(PDF) 3 Page - STMicroelectronics |
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AN3027 Scheda tecnica(HTML) 3 Page - STMicroelectronics |
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3 / 41 page ![]() AN3027 List of figures Doc ID 16134 Rev 4 3/41 List of figures Figure 1. Typical system block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Boost converter circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. Inductor current waveform and MOSFET timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4. Switching frequency, fixing the line voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 5. θ1 and θ2 dependence on input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 6. Capacitive losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 7. Conduction losses and total losses in the STF7NM50N MOSFET for the L6563S TM PFC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 8. L6563S internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 9. Open loop tran. function bode plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 10. Phase function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 11. Multiplier characteristics family for VFF = 1 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 12. Multiplier characteristics family for VFF = 3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 13. Mains detector and discharge resistor allow fast response to sudden line drops not depending on the external RC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 14. Brownout function in L6563S and L6563H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 15. Optimum MOSFET turn-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Figure 16. Tracking boost block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Figure 17. L6563H - SO16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 18. L6563S - SO14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 19. High-voltage startup generator: internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 20. Timing diagram: normal power-up and power-down sequences . . . . . . . . . . . . . . . . . . . . 32 Figure 21. High-voltage startup behavior during latch-off protection . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 22. High-voltage startup, managing the DC-DC output short-circuit. . . . . . . . . . . . . . . . . . . . . 33 Figure 23. Excel spreadsheet design specification input table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 24. Other design data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 25. TM PFC using the L6563S Excel spreadsheet schematic . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 26. TM PFC using the L6563H Excel spreadsheet schematic . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 27. Excel spreadsheet BOM - 100 W TM PFC based on L6563S/H . . . . . . . . . . . . . . . . . . . . 36 Figure 28. Wide-range 100 W demonstration board electrical circuit (EVL6564-100W) . . . . . . . . . . . 37 Figure 29. Wide-range 100 W demonstration board electrical circuit (EVL6563H-100W) . . . . . . . . . . 38 |
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