Protection circuit and gate driving circuit for semiconductor switching device
US9103888B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Oct 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3277
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There are provided a protection circuit and a gate driving circuit for a semiconductor switching device. The protection circuit for a semiconductor switching device includes an overcurrent determining unit operated according to a gate signal to determine whether a load current flowing through the semiconductor switching device controlling the load current is an overcurrent, a load open determining unit determining whether a load is open, on the basis of a detection value from a current detection unit detecting the load current, and an error detection unit generating a fault signal when it is determined that the overcurrent flows and the load is open, while the gate signal is in a turned on level of the semiconductor switching device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.