Voltage conversion circuit with voltage selection of transistor bulk
US9413244B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Jan 2, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage conversion circuit is disclosed. The voltage conversion circuit comprises an energy-storing inductor, an N-type transistor, a P-type transistor, a current comparator, a multiplexer, a first driver and a second driver. When load connected to the voltage conversion circuit is a light load, the P-type transistor will be switched off so as to avoid generating a switching current and the switching current flowing gate-source and gate-drain parasitic capacitor of the N-type transistor is generated from an input voltage. The number of N-type transistor and switching frequency also decrease accordingly so that voltage conversion efficiency of the voltage conversion circuit may be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.