公开(公告)号：CA2244044C

公开(公告)日：2001-06-05

申请号：CA2244044

申请日：1998-07-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GARDINER WILLIAM PHILLIP ,  FARRINGTON RICHARD WILLIAM ,  MAO HENGCHUN ,  JACOBS MARK ELLIOTT

IPC: H02M1/00 ,  H02M1/42 ,  H02J3/01 ,  H02J3/18 ,  H02M7/217

Abstract: For use with a power factor correction circuit, a current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator, coupled to a switch in the power factor correction circuit, that senses an electrical characteristic and a current passing through the power factor correction circuit and provides, in response thereto, a control signal to the switch and (2) a compensation circuit, coupled to an input of the power factor correction circuit, that provides a compensation signal to the modulator that is a function of a rectified line voltage provided to the input of the power factor correction circuit. The compensation signal causes the modulator to modify the control signal to reduce a total harmonic distortion (THD) of the power factor correction circuit.

公开(公告)号：CA2244044A1

公开(公告)日：1999-02-01

申请号：CA2244044

申请日：1998-07-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JACOBS MARK ELLIOTT ,  FARRINGTON RICHARD WILLIAM ,  GARDINER WILLIAM PHILLIP ,  MAO HENGCHUN

IPC: H02M1/00 ,  H02M1/42 ,  H02J3/01 ,  H02J3/18 ,  H02M7/217

Abstract: For use with a power factor correction circuit, a current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator, coupled to a switch in the power factor correction circuit, that senses an electrical characteristic and a current passing through the power factor correction circuit and provides, in response thereto, a control signal to the switch and (2) a compensation circuit, coupled to an input of the power factor correction circuit, that provides a compensation signal to the modulator that is a function of a rectified line voltage provided to the input of the power factor correction circuit. The compensation signal causes the modulator to modify the control signal to reduce a total harmonic distortion (THD) of the power factor correction circuit.