Patent ID: 7233134

Claim:
A DC-to-DC converter with fast load transient response, comprises: an output stage including a pair of high-side and low-side switches connected in series for being switched to convert an input voltage to an output voltage; a sense circuit for sensing said output voltage to thereby generate a feedback signal; a transconductive amplifier for generating a first current by amplifying a difference between said feedback signal and a threshold signal, and a second current in response to a load transient; a charging circuit connected with said first current for generating a charging voltage accordingly; a driver for generating a pair of high-side and low-side driving signals by comparing said charging voltage with a first and second reference signals to switch said pair of high-side and low-side switches; and a fast response circuit for comparing a load transient signal corresponding to said second current with a third reference signal to thereby generate a bypass signal to drive said output stage.