Datasheet FL7921R (ON Semiconductor) - 2

FL7921R APPLICATION DIAGRAM
BCM Boost PFC Quasi−resonant Flyback NBOOST CCLAMP RCLAMP NP NS VO + QPFC C R INF2 NCZD INV1 CPFC_Vo RG1 − RHV RCS1 RINV2 RCZD RRANGE QPWM 1 RANGE HV 16 2 COMP NC 15 RG2 RCS2 CINF1 R 3 INV ZCD 14 RT CRT CCOMP 4 CSPFC VIN 13 5 CSPWM RT 12 NTC 6 OPFC FB 11 7 VDD DET 10 8 OPWM GND 9 RVIN1 CFB FL7921R VAC RVIN2 CVIN NA RDET1 CDD1 CDD2 RDET2
Figure 1. Typical Application www.onsemi.com 2