Low noise, high frequency synchronous rectifier
US4903189A · kind A · utility
107Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Apr 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/635
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A synchronous rectifier is able to operate at higher frequencies and provides an output having lower noise than prior art FET synchronous rectifier system by using field effect switching devices which contain only one conductivity type of semiconductor material and connecting a high speed, low charge storage diode in parallel. Schottky diodes are preferred whereby there is no junction diode in the structure. Conventional FETs may be used when paralleled with a Schottky diode which prevents the FET's parasitic internal diode from becoming conductive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.