IGBT driving circuit and power conversion device
US12047058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2021 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Aug 8, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to an IGBT driving circuit and a power conversion device. The IGBT driving circuit includes a driving chip with a first driving signal port (Vo); a driving resistor adjustment circuit connected between the first driving signal port (Vo) and a gate (G) of an IGBT, a driving resistor formed by the driving resistor adjustment circuit being adjustable in size; a peak voltage detection circuit connected to the gate (G) of the IGBT which is conductive to the first driving signal port (Vo), the peak voltage detection circuit being configured to monitor whether a peak voltage occurs when the IGBT is turned off; and a resistor adjustment control circuit connected between the peak voltage detection circuit and the driving resistor adjustment circuit and configured to reduce a resistor formed by the driving resistor adjustment circuit when the peak voltage is monitored when the IGBT is turned off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.