Switched-mode power supply using ac-dc conversion having inverted control
US9143045B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2010 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched-mode power supply includes a first rectifier circuit configured to generate a first rectified voltage from an AC input voltage. An inverter generates a second AC voltage from the first rectified voltage. A transformer includes a primary coil coupled to the second AC voltage and a secondary coil. A second rectifier circuit is connected with the secondary coil and generates a second rectified voltage from a third AC voltage present at the secondary coil. The second rectified voltage is coupled to a node of the switched-mode power supply and represents or correlates to an output voltage thereof. A monitoring circuit shuts off the inverter when the second rectified voltage or the output voltage exceeds a predetermined first threshold, indicating an idle condition in the load and increasing energy efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.