Dual input power supply with shortened switching
US11101684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2019 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jan 6, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply method and a power supply apparatus including a power conversion circuit, a first and a second switching circuit, and a control circuit are provided. The power conversion circuit is coupled between a DC power source and a power supply terminal and performs a boosting operation according to a DC voltage of the DC power source to generate a boost voltage. The first switching circuit is coupled between an AC power source and the power supply terminal. The second switching circuit is coupled between the power conversion circuit and the power supply terminal. The control circuit enters a first mode after turning on the first and the second switching circuit, so the first switching circuit transmits a main AC voltage of the AC power source to the power supply terminal in the first mode. The boost voltage is greater than a peak value of the main AC voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.