Short circuit protection for semiconductor switches
US11695405B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2019 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Sep 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D62/8503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, methods, techniques and apparatuses of a semiconductor control system are disclosed. One exemplary embodiment is a method for protecting a semiconductor switch comprising receiving a first voltage during a second blanking period following a first blanking period; determining whether a short circuit fault is occurring by comparing the first voltage to a fast detection threshold corresponding to a first value of a drain-source voltage of the semiconductor switch; if a short circuit is not occurring: receiving a second voltage after the second blanking period ends; determining whether a short circuit fault is occurring by comparing the second voltage to a slow detection threshold corresponding to a second value of the drain-source voltage; and if a short circuit fault is occurring, opening the semiconductor switch, wherein the first value of the drain-source voltage is greater than the second value of the drain-source voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.