Output voltage detection circuit, isolated switching power...

Details Output voltage detection circuit, isolated switching power... Output voltage detection circuit, isolated switching power...

2006-08-08

2008-09-16

Patel, Rajnikant B (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S065000, C363S095000, C323S272000

Reexamination Certificate

active

07426121

ABSTRACT:
An output voltage detection circuit is provided for accurately detecting a secondary side output voltage based on a voltage induced to an auxiliary winding in an isolated switching power supply including a transformer having the auxiliary winding. A voltage waveform processing circuit (10-1) processes the waveform of the voltage induced to the auxiliary winding (7-3), a hold circuit (10-2) holds the voltage peak value after the processing, a secondary side current detection circuit (24) detects a period during which current passes through a secondary side winding (7-2), a correction circuit (22) performs correction to decrease the peak voltage which has been held by the hold circuit (10-2) during the period, and the corrected voltage is fed back to a control circuit (9). Meanwhile, a reset circuit (23) resets, for a fixed period after the current passes through the secondary side winding (7-2), the peak voltage having been held by the hold circuit (10-2).

REFERENCES:
patent: 6249444 (2001-06-01), Cross
patent: 6853568 (2005-02-01), Li et al.
patent: 6922345 (2005-07-01), Nishida et al.
patent: 6963496 (2005-11-01), Bimbaud
patent: 2002-136114 (2002-05-01), None

Affiliated with

Also associated with

Rating

Output voltage detection circuit, isolated switching power... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Output voltage detection circuit, isolated switching power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Output voltage detection circuit, isolated switching power... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3988467