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AN3093 Datasheet(PDF) 4 Page - STMicroelectronics |
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AN3093 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 29 page List of figures AN3093 4/29 Doc ID16539 Rev 1 List of figures Figure 1. Demonstration board picture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Electrical schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3. PCB: top side and through-hole components(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 4. PCB: bottom side and SMD components(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 5. Electrical schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 6. Side view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 7. Bottom side view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 8. PCB hole dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 9. Efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 10. No-load consumption score chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 11. Normal operation at full load, at 115 VAC and 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 12. Normal operation in CC mode with VOUT = 3 V, at 115 VAC and 230 VAC . . . . . . . . . . . . . 16 Figure 13. Short-circuit at 115 VAC and 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 14. Normal operation at no-load, at 115 VAC and 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 15. Startup at no-load, at 115 VAC and 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 16. Startup at full load, at 115 VAC and 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 17. Output characteristic at 115 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 18. Output characteristic at 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 19. Output characteristic without cable drop compensation: RCABLE = 0.32 Ω and R5 = 10 kΩ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 20. Output characteristic with cable drop compensation: RCABLE = 0.32 Ω and R5 = 10 kΩ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 21. Voltage control principle: internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 22. Current control principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 23. Constant current operation: switching cycle waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 24. Feed-forward compensation: internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 25. CDC compensation: external configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 |
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