Single stage power converter with regenerative snubber and power factor correction
US5982638A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Oct 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single stage DC-DC power converter uses a combined power factor control and snubber circuit. The combined circuit uses a small inductor connected at one end to the positive rail of the DC power source, and at the other to the anode of a fast power diode. The cathode of the diode is connected to a node and to the anode of a second fast power diode. The cathode of the second diode is connected to a first terminal of the primary winding of the isolation transformer. The second terminal of the primary winding is connected to one side of a high-frequency switch. The other side of the switch is coupled to the negative rail of the DC power source (ground). A small snubber capacitor is connected between the node and the second terminal of the primary winding. A large storage capacitor is connected between the second terminal of the primary winding and ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.