Self-oscillating driver circuit
US8791755B2 · kind B2 · utility
3Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2011 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Oct 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45644
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A self-oscillating driver circuit includes a driver stage, a feedforward path which is coupled to an input of the driver stage, and a feedback path which couples an output of the driver stage to an input of the feedforward path. The feedforward path includes a feedforward filter which is designed as an active filter. In order to prevent an oscillatory state of the driver circuit at an unwanted frequency, it is proposed that an internal state variable of the feedforward filter be monitored and that the feedforward filter be reset if the value of the monitored internal state variable is outside a predefined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.