Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-11-22
2005-11-22
Patel, Rajnikant B. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021040, C323S222000, C323S282000
Reexamination Certificate
active
06967851
ABSTRACT:
An apparatus for reducing the power consumption of a PFC-PWM power converter is described. The apparatus includes a control terminal used to detect a line-input voltage and to control a PFC signal and a PWM signal. The apparatus further includes a PFC power-manager and a PWM power-manager. The PFC power-manager of the PFC controller determines a PFC-reference voltage for an error amplifier of the PFC controller. The PFC-reference voltage is generated in response to the voltage at the control terminal. The PFC power-manager will disable the PFC signal whenever the voltage at the control terminal drops below a low-voltage threshold voltage. The PWM power-manager will disable the PWM signal whenever the voltage at the control terminal drops below a programmable threshold voltage. Furthermore, the PWM power-manager will pull the voltage at the control terminal low to disable the PFC circuitry during light-load and zero-load conditions.
REFERENCES:
patent: 5313381 (1994-05-01), Balakrishnan
patent: 5565761 (1996-10-01), Hwang
patent: 5903138 (1999-05-01), Hwang et al.
patent: 6233161 (2001-05-01), Balakrishnan et al.
patent: 6556462 (2003-04-01), Steigerwald et al.
Hsueh Cheng-Chi
Yang Ta-yung
J.C. Patents
Patel Rajnikant B.
System General Corp.
LandOfFree
Apparatus for reducing the power consumption of a PFC-PWM... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for reducing the power consumption of a PFC-PWM..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for reducing the power consumption of a PFC-PWM... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3485982