Cryogenically-cooled switching circuit
US6172550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1996 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Aug 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electronic power conversion circuit includes cryogenically cooled MOSFET power switching devices arranged in a switch-mode configuration and responsive to control signals for reducing capacitive discharge and commutation losses in the circuit by controlling the period between switch-on and switch-off time (i.e., "deadtime") of the MOSFET devices. When one of the MOSFET devices of the circuit is switched off, the opposing MOSFET, after the short deadtime period, is switched on to serve as a commutating device rather, than the opposing MOSFET's intrinsic drain-source diode. The power conversion circuit may include a half-bridge circuit or combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.