Circuit and method for adaptively eliminating ringing in signals driving capacitive loads
US11362649B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 14, 2021 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Sep 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00019
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A control signal may be produced in response to an assertion of a switch signal by asserting the control signal, waiting an adaptive delay after the assertion of the switch signal, de-asserting the control signal in response to the expiration of the adaptive delay, and re-asserting the control signal in response to a current generated according to the control signal becoming zero. The adaptive delay may be adjusted according to a voltage generated using the current. A circuit may include an XOR gate producing the control signal from a switch signal and an output of a Set-Reset Flip-Flop (SRFF), a zero-detect circuit that resets the SRFF when a current generated using the control circuit becomes zero, and a delay circuit to set the SRFF an adaptive delay after assertion of the switch signal and to adjust the adaptive delay according to a voltage generated by the current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.