LZC6100
Description
The LZC6100 is an active power factor correction (PFC) controller with boost topology operates in quasi-resonant mode (QRM). It uses voltage mode PWM control method that pares an internal sawtooth signal with output signal of the error amplifier to generate an external power MOSFET turn-off signal. LZC6100 introduce 500V start-up and novel power supply circuit (patent pending) for VCC without extra axillary winding. LZC6100 sets two levels slope ratio for inner sawtooth signal by input line voltage automatically and builds in vary on time with input line voltage technology
Main Features
- Very fewer external ponents
- Zero-current detection (ZCD) without extra winding
- Internal total harmonic distortion (THD) optimizer
- Low operating current and power supply from HV pin directly without extra auxiliary winding
- Boost quasi-resonant converter controller for adaptors or high brightness LEDs
- Supports high power factor (PF>0.9) and low THD
- High precision constant...
