Balanced current converter with multiple pulse width modulated channels

摘要

A balanced current converter with multiple PWM converter channels has an error amplifier, a main converter channel and at least one parallel converter channel. The converter provides a DC power output and feeds back an average output voltage signal. The error amplifier compares a reference voltage signal and the average output voltage signal to generate an error signal. The main converter channel outputs a main channel current signal and a main channel power output according to the error signal. The parallel converter channel compares the main channel current signal and the respective parallel channel current signal to generate a first deviation signal, then compares the first deviation signal and the error signal to generate a second deviation signal. The parallel converter channel provides and measures a respective parallel channel power output to feed back the respective parallel channel current signal.