描述 Description

ICE2QS01 is a quasi-resonant PWM controller optimized for off-line switch power supply applications such as LCD TV, CRT TV and notebook adapter. The digital frequency reduction with decreasing load enables a quasi-resonant operation till very low load.

特性 Features

? Quasiresonant operation till very low load
? Active burst mode operation at light load for low standby input power (< 1W)
? Digital frequency reduction with decreasing load
? Power cell for VCC pre-charging and IC power supply during latch-off, or standby mode operation when it is necessary
? Built-in digital soft-start
? Foldback correction and cycle-by-cycle peak current limitation
? Auto restart mode for VCC Overvoltage protection
? Auto restart mode for VCC Undervoltage protection
? Auto restart mode for openloop/overload protection
? Latch-off mode for adjustable output overvoltage protection
? Latch-off mode for Short-winding protection

簡介

ICE2QS01屬于集成電路（IC）的PFC（功率因數(shù)校正）。由制造生產(chǎn)的ICE2QS01PFC（功率因數(shù)校正）功率因數(shù)校正 (PFC) 是用于調(diào)整交流電路中的電壓和電流之間的相位角，使之趨近于零的半導(dǎo)體器件。不同模式包括平均電流、邊界導(dǎo)通、連續(xù)導(dǎo)通、臨界導(dǎo)通、電流控制式頻率折返、不連續(xù)和不連續(xù)導(dǎo)通，開關(guān)頻率從 6 kHz 至 1.7 MHz 可調(diào)。