Patent ID: 8120340
Filing Date: 2012-02-21
Classification: H02M,Y02B

Abstract:
1. A control device for interleavingly driving first and second converting circuits of an interleaving power factor corrector such that the interleaving power factor corrector generates a voltage output (Vo), each of the first and second converting circuits including a combination of an inductor and a power switch, the power switches of the first and second converting circuits having control ends for receiving respectively first and second control signals such that the power switch of each of the first and second converting circuits is operable between an ON-mode and an OFF-mode in response to a corresponding one of the first and second control signals, said control device comprising: a first control module adapted for detecting a current flowing through the inductor of the first converting circuit, outputting a feedback compensation signal (Vcomp) based on the voltage output (Vo) generated by the interleaving power factor corrector, and generating a first driving signal (Q_master) corresponding to the first control signal based on a result of current detection performed thereby and the feedback compensation signal (Vcomp), said first control module further outputting an inverted first driving signal (Qn_master); a second control module adapted for detecting a current flowing through the inductor of the second converting circuit, receiving the inverted first driving signal (Qn_master) from said first control module, outputting a first reset signal (S_syn) based on the inverted first driving signal (Qn_master) received thereby, and generating a second driving signal (Q_slave) corresponding to the second control signal based on a result of current detection performed thereby, the first reset signal (S_syn) and a second reset signal (S_PTCL), said second control module further outputting an inverted second driving signal (Qn_slave); and a phase modulating module including wherein, when one of the first and second reset signals (S_syn, S_PTCL) has the predetermined level, the second driving signal (Q_slave) generated by said second control module has a level for switching the power switch of the second converting circuit to the OFF-mode.