Power conversion apparatus, control module, and method of operating the same for multi-level output voltage
US11942856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2021 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | May 3, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion apparatus supplies power to a load, and the power conversion apparatus includes a power switch, a transformer, and a control module. The control module alternately turns on and turns off a power switch of the power conversion apparatus to convert an input voltage into an output voltage through the transformer. When the power switch is turned off, a primary side of the transformer generates a resonance voltage. The control module sets a predetermined counting threshold according to the output voltage, and sets a blanking time interval according to a feedback signal related to the load. After the blanking time interval ends, the control module counts a number of an oscillation turning point generated by the resonance voltage due to the oscillation of the resonance voltage. When the number reaches the predetermined counting threshold, the control module turns on the power switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.