Description:
The FA5502 is a control IC for a power factor correction system. This IC use the average current control system
to en sure stable operation. With this system , a power factor of 99％ or better can be achieved.
Pin assignment:
1. IFB: current error amplifier output（output of current error amplifier to connect compensation network）
2. IIN: Inverting input to current error amplifier(Inverting input to current error amplifier to connect
compensation network)
3. VDET: Multiplier input (input of multiplier to detect sinusoidal waveform)
4. OVP: overvoltage protection inpution(overvoltage protection circuit)
5. VFB: voltage error amplifier output(It’s connect compensation network)
6. VIN－: Inverting input to voltage erroramplifier(It’s detect PFC output voltage)
7. GND: Ground
8. OUT: output(output for direct driving a power MOSFET)
9. VC: power supply to output circuit
10. VCC: power supply to IC
11. CS: soft-start(connect capacitor for soft-start)
12. ON/OFF: output on off control input(IC output on off control circuit)
13. REF: reference voltage
To Next Page
Loading...
