Patent ID: 9350347
Filing Date: 2016-05-24
CPC Classification: H02M,H03K,Y02B

Claim Text:
1. A DC-DC buck converter controller, adapted to control a first power switch and a second power switch of a converting circuit connected in series, wherein the first power switch is coupled to an input voltage and a connection node, and the second power switch is coupled to the connection node and a common potential, the DC-DC buck converter controller comprising: a feedback control circuit, generating a pulse width modulating signal according to a detecting signal indicative of a state of the converting circuit, wherein a level of the pulse width modulating signal is switched between the common potential and a driving potential; a level shift circuit, generating a level shift signal according to the pulse width modulating signal, comprising: a driver, coupled to the level shift circuit and the feedback control circuit, and generating a high-side control signal and a low-side control signal according to the pulse width modulating signal and the level shift signal for respectively turning on and off the first power switch and the second power switch.