Method and apparatus for a regulated power supply including a charge pump with sampled feedback
US6456153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2001 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | May 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A regulated integrated circuit power supply (200) intermittently applies feedback to a charge pump (202) on a sampled basis such that a feedback circuit (204) is enabled to sense the bias voltage (Vout) at predetermined intervals of time. Based upon the value of the bias voltage (Vout) as compared to a threshold voltage (VT), the charge pump (202) is enabled to supply a voltage to the integrated circuit. Thereby, the regulated charge pump (202) does not overload the integrated circuit coupled thereto. The regulated integrated circuit power supply (200) includes the charge pump (202) coupled to the integrated circuit to supply bias voltage (Vout). Additionally, coupled to the integrated circuit, the feedback circuit (204) senses the bias voltage (Vout) and provides an output signal based upon a comparison between the bias voltage (Vout) and a voltage threshold (VT) A switch (208) connected to the feedback circuit (204) selectively enables and disables sensing of the bias voltage (Vout). A signal generator (210) provides at least one output signal. A controller (212) receives both output signals from the signal generator (210) and the feedback circuit (204) to provide a first and a s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.