CMOS求和比較器在PWM開關電源控制中的應用

摘要：文章介紹了一種用CMOS求和比較器代替傳統的PWM電流控制電路中的誤差放大器的開關電源控制技術，該技術可以使原來復雜的、缺乏自適應能力的系統變得簡潔，并且降低了成本，有利于系統集成。 敘詞：求和比較器 PWM控制 開關電源 Abstract：This paper introduces a kind of control technology used in SMPS which takes advantage of a CMOS sum-comparator to substitute the traditional error amplifier applied in current-mode PWM control circuit.This technology makes the system which is complicated and lacks of self-adaptive capacity brief and lowers the cost,so it is easy to be integrated. Keyword：sum-comparator PWM control SMPS