Converter with continuous current flowing through secondary windings
US6195273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Dec 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0087
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The input side of a DC:DC converter emulates current fed topologies and replaces an active switch and associated components with a passive inductor, coupled between Vin and upper nodes of the primary transformer windings, that smoothes input current. Several output side topologies are disclosed that may be used with any input side configuration, and require no output snubbers. The output topologies use non-center-tapped secondary windings that are utilized 100% of the time. The output topologies advantageously use series-coupled capacitors, which configuration distributes voltage stress. The topologies advantageously provide two output voltages, Vo1 and Vo2.apprxeq.Vo1, or Vo2.apprxeq.-Vo1. The snubber-less output side topologies provide very low EMI content waveforms that may be switched at relatively high frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.