Semiconductor circuit and switching power supply apparatus
US7737672B2 · kind B2 · utility
9Cited by
2References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2008 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Dec 6, 2028 |
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.