Step-up/step-down voltage converter with bipolar synchronous rectification element
US6091232A · kind A · utility
13Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC/DC conversion circuit, adapted to convert a DC input voltage to a DC output voltage, employs a PNP type of bipolar power transistor as a synchronous rectifier element, to allow power-on through a simplified control circuitry capable of sensing, automatically and at a high speed, the difference of potential across the switch. This approach allows power to be transferred from the input to the output unilaterally, while automatically controlling the depth of saturation of the power transistor and regulating its base current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.