Soft switching active snubber for semiconductor circuit operated in discontinuous conduction mode
US5414613A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Aug 20, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A snubber network for a power conversion circuit operated in discontinuous conduction mode includes a snubber capacitor, an isolation diode and an active reset circuit. The snubber capacitor is connected to the output of the isolation diode, both of which are connected across a main switch of the power conversion circuit. The active reset circuit, connected between the input and output of the isolation diode as well as the input and output of a boost diode, is responsive to a reset signal for active resetting of the snubber capacitor within the normal boost cycle of the power conversion circuit. Upon receipt of the reset signal, energy held by the snubber capacitor is recovered by the reset circuit and subsequently transferred to the output of the power conversion circuit with turn-off of the main switch of the power conversion circuit. This occurs contemporaneous with the power conversion circuit's delivery of converted power to its output. With the snubber network, soft switching is provided for both the main switch and a snubber switch within the active reset circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.