Accurate voltage regulation of a primary-side regulation...

Details Accurate voltage regulation of a primary-side regulation... Accurate voltage regulation of a primary-side regulation...

2008-08-30

2010-10-19

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021160, C363S021180

Reexamination Certificate

active

07817447

ABSTRACT:
A power converter operates in continuous conduction mode and outputs a regulated output voltage. A feedback-derived signal is used to regulate the output voltage. The feedback-derived signal is sampled at multiple time points during an OFF cycle of a power switch. A current-sense signal is also sampled at one or more time points during an ON cycle of the power switch. The current-sense signal is indicative of an output inductor current of the power converter. A calibrated feedback-derived voltage is then generated based on the multiple voltage samples of the feedback-derived signal and the one or more voltage samples of the current-sense signal. The calibrated feedback-derived voltage is less sensitive to an output inductor current loop resistance than the original voltage samples of the feedback-derived signal. The calibrated feedback-derived voltage also compensates for the nonlinearity of a diode of the output inductor current loop.

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