IGBT gate drive during turnoff to reduce switching loss
US9838002B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2016 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Apr 19, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A vehicle powertrain includes an IGBT and a gate driver. The IGBT is configured to energize an electric machine. The gate driver is configured to apply an off voltage less than a threshold voltage onto a gate of the IGBT while the IGBT is operating in a saturation mode, and in response to expiration of a delay from a transition from saturation to linear mode, apply a voltage pulse above the off voltage to reduce flyback from the electric machine. The gate driver may be configured to, in response to expiration of a delay from a transition from saturation to linear mode, apply a voltage pulse above the off voltage and below the threshold to reduce flyback from the electric machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.