Voltage drop DC-DC converter
US6538907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage drop DC-DC converter includes a switch circuit including a plurality of switches for alternately connecting a first and second capacitors in series and in parallel in response to an output signal of an oscillator circuit oscillating at a constant frequency. An efficient voltage dropping conversion is possible by deriving a voltage divided by the first and second capacitors when the first and second capacitors are connected in series and deriving terminal voltages of the first and second capacitors when the first and second capacitors are connected in parallel. When the derived voltage is increased beyond an aimed reference output voltage, the oscillation of the oscillator circuit is stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.