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LNK6773EVK Datasheet(PDF) 6 Page - Power Integrations, Inc. |
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LNK6773EVK Datasheet(HTML) 6 Page - Power Integrations, Inc. |
6 / 24 page Rev. C 03/14 6 LinkSwitch-HP www.powerint.com www.powerint.com Figure 9. Line Sensing and Auto-Restart Flow Chart. 1. Startup Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No No No No No 2. Latching Shutdown? (CBF = 47 µF) 11. AC Present? (IFB > -250 µA) 14. Line OV? (IFB > -1.15 mA for 2 Cycles) 15. Brown-Out? (IFB < -100 µA for 8 Cycles) 16. Regulation Lost? (VFB < 1.85 V for 35 ms) 9. Latch Reset? (VPD > 3.4 V) 8. Stop Switching 10. Reset Latch 21. Line OV? (IFB > 1.15 mA for 2 Cycles) 22. Brown-Out? (IFB < -100 µA for 8 Cycles) 17. Stop Switching 18. Pause 150 ms (Auto-Restart Off Period tAR(OFF)1) 23. Regulation Lost? (VFB < 1.85 V for 35 ms) 24. Stop Switching 19. AC Present? (IFB > -250 µA) 25. Pause 1500 ms (Auto-Restart Off Period tAR(OFF)2) 3. AC Present? (IFB > -250 µA) 5. Line OV? (IFB > -1.15 mA for 2 Cycles) 6. Brown-Out? (IFB < -100 µA for 8 Cycles) 7. Regulation Lost? (VFB < 1.85 V for 35 ms) 26. Pause 150 ms (Auto-Restart Off Period (tAR(OFF)) 4. Start Switching (With 15 ms Soft-Start) 27. Pause 150 ms (Auto-Restart Off Period tAR(OFF)1) 12. Start Switching (With 15 ms Soft-Start) 20. Start Switching (With 15 ms Soft-Start) PI-6838-101812 |
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