Power module
US9007736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2011 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Aug 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power module includes a current sensing circuit in which a transistor includes an emitter connected to a sense emitter of a current sense element of an IGBT and a base connected to ground, a current sensing resistor including one end thereof connected to a collector of the transistor and the other end thereof connected to a common connection portion. The power module detects, as a current sensing voltage, a potential difference generated by the current sensing resistor based on the common connection portion as a reference, compares the current sensing voltage with a predetermined threshold voltage, and determines whether or not an overcurrent flows through the IGBT according to a magnitude relation therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.