Invention Grant
US08541990B2 Power conversion controller having a novel power factor correction mechanism using line voltage normalization 失效
电力转换控制器具有使用线电压归一化的新型功率因数校正机构

Power conversion controller having a novel power factor correction mechanism using line voltage normalization
Abstract:
A power conversion controller having a novel power factor correction mechanism, including: a normalization unit, used to generate a normalized signal according to a line voltage by multiplying the line voltage with a normalizing gain, wherein the normalizing gain is proportional to the reciprocal of the amplitude of the line voltage; a reference current generation unit, coupled to the normalization unit to generate a reference current signal by performing an arithmetic operation, wherein the arithmetic operation involves the normalized signal; and a gate drive signal generation unit, used to generate a gate drive signal, wherein the duty of the gate drive signal is determined by a voltage comparison of the reference current signal and a current sensing signal.
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