Methods and apparatus for resonant energy minimization in zero voltage transition power converters
US9654003B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2015 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Dec 29, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method arrangement, providing a zero voltage transition circuit including an input node, an output node, a switch node, an output inductor coupling the switch node and output node, an output capacitor coupling the output node and ground, a first switch coupling the input node and switch node, a second switch coupling switch node and ground, a first auxiliary switch coupling the input node to an auxiliary node, a second auxiliary switch coupling the auxiliary node to ground, and an auxiliary inductor coupling the auxiliary node to the switch node; closing the first auxiliary switch to couple the input to the auxiliary node; subsequently, when a current is below a cutoff threshold, opening the second switch; after a first delay period, opening the first auxiliary switch and closing the second auxiliary switch; and after a second delay period, closing the first switch. Apparatus and additional method arrangements are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.