Switching power supply and electronic apparatus employing the same
US7851946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Oct 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/077
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a switching power supply apparatus, an input voltage Vin applied to an input terminal is output from a first output terminal and a second output terminal after boosting or inverting of the voltage Vin. When a first and a fourth switches are turned on, a flying capacitor is charged. When a second and a fifth switches are turned on, charges charged in the flying capacitor are transferred to a first output capacitor. When a third and a fifth switches are turned on, charges charged in the flying capacitor are transferred to a second output capacitor. A voltage Vin×2 double the input voltage Vin is output from the first output terminal as a first output voltage Vout1, and a voltage −Vin obtained by inverting the input voltage is output from the second output terminal as a second output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.