Switching power supply unit
US6919713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Oct 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Accumulation and emission of energy in and from a coil having an intermediate tap is controlled by switching a DC input voltage from a DC power source on and off. Controlled voltages generated at a plurality of terminals are rectified and smoothed to output a plurality of DC output voltages. Connection to a reference voltage is controlled such that the voltages generated at the plurality of terminals are not dependent on the DC input voltage during the on-off switching. Therefore, a switching power supply unit is provided in which a coil having an intermediate tap is used to allow a simple configuration, to convert a DC input voltage into a plurality of DC output voltages with high efficiency, and to achieve compactness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.