Charge pumping circuit with decreased current consumption
US7847620B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2008 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jun 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pumping circuit consumes less current by reducing the number of charge pumps operating simultaneously. The charge pumping circuit includes a voltage sensor that detects a level of a high voltage and outputs a control signal based on the detection result. An oscillator provides an oscillating clock signal in response to the control signal of the voltage sensor, and the oscillator sequentially outputs the clock signal as a plurality of clock signals having shifted phases A plurality of high-voltage pumps are disposed in a plurality of regions to pump the high voltage in response to the clock signals and a different phase is designated for each region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.