Quasi-resonant converter
US6496388B2 · kind B2 · utility
0Cited by
16References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2001 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Apr 20, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A converter 10 has an IGBT power switch 34. A resonant tank circuit 30 couples the IGBT to a voltage source. A gate controller turns the IGBT on and off by applying a suitable gate control voltage to the gate. The resonant tank circuit imposes a sinusoidal waveform on the emitter current. After the emitter current reverses direction, the gate signal is terminated and the IGBT is shut off. Minority carriers in the emitter are swept away by the tank circuit and are further deposited in a transformer that is coupled to the tank circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.