Patent ID: 7944721
Filing Date: 2011-05-17
Classification: H02M,Y02B

Abstract:
1. A switching control circuit for multi-channels and multi-phases power converter comprising: a master control circuit coupled to an input and an output of the power converter and a first current-sense device to receive a line-input signal, a feedback signal and a first-current signal respectively, the feedback signal correlated to an output voltage of the power converter, the master control circuit generating a multiplier signal in response to the line-input signal and the feedback signal, and generating a first switching signal to switch a first inductor of the power converter in accordance with the multiplier signal and the first-current signal, wherein the first-current signal is correlated to a switching current of the first inductor; and a slave control circuit coupled to the master control circuit and a second current-sense device to receive the multiplier signal, the first switching signal and a second-current signal respectively, the slave control circuit generating a second switching signal to switch a second inductor of the power converter in accordance with the multiplier signal, the first switching signal and the second-current signal, wherein the second-current signal is correlated to a switching current of the second inductor.