Switching element driving circuit
US9748942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Apr 26, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/6871
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switching element driving circuit includes a current detection unit that outputs a driving stop signal based on a level of current flowing through the switching element, and first and second control elements each connected to a control terminal of the switching element. A comparator controls the first control element based on a result of comparison of an output voltage of the driving circuit main unit with a first reference voltage. A differential amplifier drives the second control element in accordance with a voltage difference between the output voltage of the driving circuit main unit and a second reference so as to maintain the output voltage equal to the second reference voltage. An operation stopping unit stops the comparator and the differential amplifier to drive the first and second control elements, respectively, in response to the driving stop signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.