PFC-PWM controller having interleaved switching

Details PFC-PWM controller having interleaved switching PFC-PWM controller having interleaved switching

2005-06-07

2005-06-07

Laxton, Gary L. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

06903536

ABSTRACT:
The present invention discloses a PFC-PWM controller having interleaved switching. A PFC stage generates a PFC signal for switching a PFC boost converter of a power converter. A PWM stage generates a PWM signal for switching a DC-to-DC converter of the power converter. The PFC-PWM controller includes a power manager for generating a discharge current and a burst-signal. Under light-load conditions, the discharge current decreases in proportion to a load of the power converter. The burst signal is utilized to disable the PFC signal in a suspended condition for power saving. A pulse width of the pulse-signal ensures a dead time to spread switching signals, such as the PFC and PWM signals, and reduces switching noise. When the discharge current decreases, the pulse width of the pulse-signal will increase and a frequency of the pulse-signal will decrease correspondingly. This further reduces power consumption under light-load and zero-load conditions.

REFERENCES:
patent: 5565761 (1996-10-01), Hwang
patent: 5870294 (1999-02-01), Cyr
patent: 6700764 (2004-03-01), Tan

Affiliated with

Also associated with

Rating

PFC-PWM controller having interleaved switching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PFC-PWM controller having interleaved switching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PFC-PWM controller having interleaved switching will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3503860