Circuit for protecting a power switch
US11381233B2 · kind B2 · utility
0Cited by
25References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2018 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Sep 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/202
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A protection circuit for a transistor switch coupled to a power supply rail operates to modulate a control voltage at a control terminal of the transistor switch. A first circuit detects an overload across the terminals of the switch with respect to a threshold to generate a signal which modulates the control voltage. A second circuit operates to adjust a value of the threshold in response to sensed variations in a supply voltage at the power supply rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.