Switching element control apparatus
US8680897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2012 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jan 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/163
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switching element control apparatus capable of controlling a switching element that is driven by controlling a voltage on its control terminal properly in response to characteristic information of the switching element. The apparatus includes a constant current circuit that applies a constant current to the control terminal, a voltage-limiting circuit that limits the voltage on the control terminal so as not to exceed a limiting voltage, and a control circuit that controls the constant current circuit to apply the constant current to the control terminal when having received a drive signal for turning on the switching element, and controls the voltage-limiting circuit to limit the voltage on the control terminal for a voltage-limiting time period. The control circuit includes a memory storing the characteristic information and variably sets at least one of the limiting voltage, the voltage-limiting time period, and the constant current in response to the characteristic information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.