Voltage supply circuit
US6469570B1 · kind B1 · utility
1Cited by
3References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 12, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage supply circuit capable of starting up a system while maintaining symmetry of a high level selection signal VH and a low level selection signal VL, not requiring a multistage charge pump circuit, and capable of reducing the number of parts of the system, wherein generation circuits of VD and VH are comprised of chopper type booster type switching regulators, and switching timings of a VH generation circuit 12 and a VL generation circuit 13 are controlled so that a virtual reference voltage VS (VD/2) and a middle point potential between VH and VL become the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.