Method and an associated device for controlling a DC-DC converter based upon an iterative procedure
US6346801B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Sep 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and system for controlling a DC-DC converter compares the output voltage with a low threshold and a high threshold, and injects a certain minimum electric charge into an inductor of the converter during a charge period corresponding to a power switch. The beginning of a charge period is commanded each time the output voltage drops below the low threshold, and the electric charge transferred during a charge period is progressively increased until the output voltage rises to the high threshold. The output voltage starts from the low threshold upon executing the charge period. The duration of the time interval between two consecutive charge periods is measured and stored. The current time interval is compared with the previously detected and stored time interval. The output voltage is decreasing to the minimum electric charge whenever an increment of the time interval between two consecutive charge periods is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.