Switching regulator device and method with adaptive frequency foldback
US8294446B2 · kind B2 · utility
5Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Mar 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A device and method for regulating the output of a power circuit is provided, which in one embodiment includes a pulsewidth modulation (PWM) circuit that produces pulses each having a period of at least a minimum duration, a comparator circuit that produces a control signal, a timer initiated at the output of each pulse and operable to expire no later than expiration of twice the minimum pulsewidth duration, and wherein the PWM circuit is operable to reduce the frequency of outputted pulses in response to receiving the control signal having a first state at expiration of the first timer initiated at the output of a first pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.