Power converter controller controlled by variable reference voltage generated by dual output digital to analog converter
US7589983B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Dec 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter includes a switch controller having a dual output digital-to-analog converter for generating a variable reference voltage and a knee voltage offset from the reference voltage by a predetermined voltage. The variable reference voltage is generated based on a reconstructed representation of output voltage of the power converter in a previous switching cycle. Comparators compare the variable reference voltage and the variable knee voltage to a sensed output of the power converter in a first switching cycle. A digital logic of the switch controller receives signals from the comparators and determines a pulse signal for controlling an on-time and an off time of a switch in a second switching cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.