Patent · US Active

Power conversion feedback control circuit for reaching a goal voltage

US8912770B2 · kind B2 · utility

2Cited by

2References

16Claims

0Family size

Assignee

Atmel Corporation · US

Inventors

Charles Cai · Rancho Cordova, US
Jeff Kotowski · Nevada City, US
Kien Vi · Palo Alto, US

Key dates

Filing date	Nov 4, 2011
Grant date	Dec 16, 2014
Priority date	—
Expiry date	Mar 13, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S323/901
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power conversion circuit of two feedback loops is disclosed that includes a feedback control circuit for ramping up or down a commanded voltage to a load (e.g., LEDs). The second feedback loop feeds into the first feedback loop, and the second feedback loop operates at a slower bandwidth than the first feedback loop. When ramping up or down the commanded voltage, a voltage overshoot results because of delay in the system. The overshoot can be compensated for by a final adjustment to the commanded voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.