Overcurrent protection detector with dynamic threshold for power conversion switch
US11171559B2 · kind B2 · utility
0Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jan 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic circuit comprises a power switch and a fault detection circuit. The power switch circuit includes a power switch transistor. The fault detection circuit includes a comparator circuit configured to monitor a voltage across the power switch transistor and compare the voltage to a varying threshold voltage that decreases with time, and produce an indication of a circuit fault when the voltage of the power switch transistor is greater than the time varying threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.