TECHNICAL KNOWLEDGE

TECHNICAL KNOWLEDGE


08

2024

-

04

Core Micro LP6655-CCM Mode PFC Controller Application Guide

Author:


Power factor correction (PFC) circuit can eliminate the high harmonics of AC input current, improve the power factor of the power supply, reduce the input RMS current, and provide a stable DC voltage to the back-end circuit. Therefore, power factor correction (PFC) circuit is widely used in chargers, adapters, industrial control/communication power supplies, frequency converters, motor drives, automation equipment, industrial robots and other fields.

The power factor correction (PFC) circuit can eliminate the high harmonics of the AC input current, improve the power factor of the power supply, reduce the input effective value current, and provide a stable DC voltage to the back-end circuit; (PFC) circuits in chargers, adapters, industrial control/communication power supplies, inverters, motor drives, automation equipment, industrial Robots and other fields have a wide range of applications.
Core Microelectronics recently introduced the LP6655 series of high-performance CCM/DCM fixed-frequency PFC controllers. LP6655 The operating frequency of the series chip is fixed, with 65kHz/133kHz/200kHz optional; single-cycle modulation mode can provide Excellent power factor performance, while the chip can reduce the operating frequency under light load to improve light-load energy efficiency.