Synchronous converter with reverse current protection through variable inductance
US6778412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2002 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Aug 14, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC-DC converter includes a reverse current detector for detecting a reverse current and a reverse current suppressor for increasing an input-output conversion ratio when a reverse current is detected. A choke coil increases the inductance in a current flowing region in which a very small reverse current flows and reduces the inductance in a current flowing region in which the current flowing is greater than or equal to that in a normal operation mode. In a reverse current flowing region in which the output current is negative, the DC-DC converter has unique regulation characteristics in which the amount of change in the output voltage relative to the amount of change in the output current is very large.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.