Voltage boosting circuit having cross-coupled precharge circuits
US6225854A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jun 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/077
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power supply boosting circuit provides increased pumping efficiency by driving the gate of a transistor in a first precharge circuit with the pumped output voltage from a second precharge circuit, thereby eliminating a threshold voltage drop from the output voltage of the first precharge circuit. The pumped output voltage from the first precharge circuit is then used to precharge a pumping node in a pumping circuit, which in turn, eliminates a threshold voltage drop from the output voltage of the pumping circuit. A transistor in the second precharge circuit can likewise be driven by the pumped output voltage from the first precharge circuit, further increasing the pumping efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.