Buck-boost converter and method for regulation
US9685860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2014 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1584
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A buck-boost converter includes a buck-boost voltage converter circuit, an error controller and a buck-boost mode controller. The buck-boost voltage converter includes switches. The error controller is configured to provide a control signal based on a difference between an output voltage of the buck-boost voltage converter circuit and a reference voltage. The buck-boost mode controller determines switching duty cycles based on the control signal having at least three conditions: when DC is beyond a threshold value, apply one of buck regulation control and boost regulation control, where DC is a value of the control signal; when DC is not beyond and not substantially equal to the threshold value, apply the other of the buck regulation control and the boost regulation control; and when DC is substantially equal to the threshold value, apply buck-boost regulation control. The output voltage is regulated by the switching duty cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.