Gate drive circuit for isolated gate devices and method of operation thereof
US6094087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1999 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gate drive circuit for an isolated gate device, a method of driving the same and a switch-mode power supply employing the circuit or the method. In one embodiment, the circuit includes: (1) a capacitor, having a first terminal coupled to a source of drive voltage and a second terminal coupled to a gate of the isolated gate device, that stores a charge therein when the drive voltage maintains the isolated gate device in an "on" state and (2) a conductive path, leading from the first terminal to an output terminal of the isolated gate device and enabled when the isolated gate device is to be transitioned from the "on" state to an "off" state, that provides a negative off-bias voltage to the gate thereby to avoid spurious turn-on of the isolated gate device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.