Driving device for semiconductor element
US10812062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driving device for a semiconductor element includes: a plurality of detection circuits that detect different types of abnormalities of the semiconductor element; a logic circuit that generates an error signal when at least one of the detection circuits detects an abnormality; an alarm signal generating circuit that receives the error signal and generates an alarm signal made of one or a plurality of pulses, the alarm signal having a different pulse width for each of the detection circuits that has detected an abnormality; and a protection operation determining circuit that determines whether or not a protection function of the semiconductor element is operating based on the error signal and the alarm signal, and shuts off input of a drive signal to the semiconductor element when it is determined that the protection function is operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.