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FAN7621BSJ Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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FAN7621BSJ Datasheet(HTML) 2 Page - Fairchild Semiconductor |
2 / 17 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN7621B • Rev. 1.0.1 2 Application Circuit Diagram R sense C DL VCC LVCC RT CON CS SG PG CTR HVCC Cr L lk Lm Ns VO D1 D2 R F C F Np Ns KA431 VIN HO LO Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter) Block Diagram OLP TSD LVCC good Low-Side Gate Drive High-Side Gate Drive 6 1 12 10.0 / 12.5 V VREF Internal Bias LVCC good 3 HO CS CON LVCC HVCC CTR R T VAOCP PG LVCC OVP Time Delay 2 8 16 9 Time Delay + - VOCP + - + - + - + - -Q Q R S LVCC <5V Latch protection -Q Q R S Auto-restart protection + - 0.4 / 0.6 V 5 V 23 V 0.58 V 0.9 V 8.7 / 9.2 V HVCC good ICTC + - + - 3V 1V -Q Q R S F/F Level-Shift Balancing Delay Shutdown without delay 50ns delay -1 2ICTC VREF ICTC 350ns 350ns 10 SG Delay 1.5μs 2V Coun ter (1/4) LVCC IOLP 14 LO Figure 2. Internal Block Diagram |
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