METHOD AND SYSTEM FOR ENHANCING LOAD TRANSIENT RESPONSE OF VOLTAGE-MODE BUCK CONVERTER

摘要

A method for enhancing load transient response of a voltage-mode buck converter, comprising: performing low-pass filtering of an output voltage Vout of the voltage-mode buck converter to generate an average voltage Vout1 (S1); calculating a difference between Vout and Vout1, and converting the amplitude waveform of the calculated difference into a fluctuating current Itran (S2); ramping the amplitude of the fluctuating current Itran, and generating, according to the obtained ramp signal, a transient response output voltage Vout of the voltage-mode buck converter (S3). Meanwhile, a system for enhancing load transient response of the voltage-mode buck converter is also disclosed.