Voltage pump with diode for pre-charge
US6483378B2 · kind B2 · utility
53Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump system for providing a voltage to a semiconductor device is disclosed. Current charge pumps use a separate pre-charge capacitor and pre-charge circuitry for the boot circuit which provides the gate voltage for the output transistor. The present invention eliminates the need for the separate pre-charge capacitor and pre-charge circuitry by the use of a single diode. The net effect is a more efficient and smaller charge pump circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.