Device and method for controlling a buck-boost converter
US8570006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2011 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | May 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit, device, and method for controlling a buck-boost circuit includes a bootstrap capacitor voltage regulator circuit and a comparator circuit. The bootstrap capacitor voltage regulator circuit is electrically coupled to a buck-mode bootstrap capacitor of the buck-boost converter and to a boost-mode bootstrap capacitor of the buck-boost converter. The comparator circuit is configured to control the bootstrap capacitor voltage regulator circuit to maintain a voltage of the bootstrap capacitors above a reference threshold voltage by transferring an amount energy from one of the bootstrap capacitors to the other bootstrap capacitors based on the particular mode of operation of the buck-boost converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.