Semiconductor circuit and switching power supply apparatus
US7969129B2 · kind B2 · utility
13Cited by
3References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2010 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Mar 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/007
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
To provide a power supply apparatus which realizes a high-speed response, a stable operation, and a low output ripple with low power consumption. The first stage switching regulator receives an input voltage and forms a first voltage. The second stage switching regulator receives the first voltage and forms a second voltage. The second stage switching regulator includes an N-phase (N is two or more) switching regulator, and the first voltage is set to be N times a target value of the second voltage. The input voltage is set to be higher than the first voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.