System and method for temperature based control of a power semiconductor circuit
US8203315B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jul 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/0806
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a method for operating a power semiconductor circuit a power semiconductor chip is provided which includes a power semiconductor switch with a first load terminal and with a second load terminal. Further, a first temperature sensor which is thermally coupled to the power semiconductor switch and a second temperature sensor are provided. The power semiconductor switch is switched OFF or kept switched OFF if the temperature difference between a first temperature of the first temperature sensor and a second temperature of the second temperature sensor is greater than or equal to a switching-OFF threshold temperature difference which depends, following an inconstant first function, on the voltage drop across the power semiconductor switch between the first load terminal and the second load terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.