Switching power supply, method for controlling switching power supply, and power supply system
US9641062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching power supply includes: a resonant circuit; a switching circuit including a switching element and configured to supply a voltage to the resonant circuit; a smoothing circuit configured to smooth a voltage output from the resonant circuit and outputs an output voltage; a resonance controller configured to, when a control instruction signal is input, cause the switching element to be turned on and off at a first frequency in such a manner that the output voltage becomes a specific voltage; and a controller configured to discontinuously output the control instruction signal to the resonance controller at a second frequency after an operation instruction signal is input until the output voltage becomes higher than a threshold voltage, and continuously output the control instruction signal to the resonance controller after the output voltage becomes higher than the threshold voltage until the operation instruction signal is not input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.