Upper arm drive circuit, drive circuit of power conversion device, and power conversion device
US11955878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2022 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Nov 21, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The upper arm drive circuit for controlling the drive of an upper arm switching element of the power conversion device includes: an upper arm gate voltage output wiring connected to a gate of the upper arm switching element; a first upper arm drive circuit reference potential wiring; an upper arm gate voltage reference potential wiring connected to an inverter output of the power conversion device; and a control circuit of upper arm drive circuit reference potential wiring potential for controlling the potential of the first upper arm drive circuit reference potential wiring to a potential lower than a reference potential when a potential of the inverter output is equal to a predefined potential that is lower than the reference potential or lower. The first upper arm drive circuit reference potential wiring is connected to the reference potential via the control circuit of upper arm drive circuit reference potential wiring potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.