DC-DC converter control circuit and DC-DC converter including same
US8766615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2012 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC-DC converter control circuit, to control a DC-DC converter having an inductor and two switching elements, including a first feedback circuit to generate a first feedback voltage indicating a DC component of an inductor current of the inductor based on an output current of the DC-DC converter; a second feedback circuit to generate a second feedback voltage indicating an AC component of the inductor current; a synthesis circuit to add the first and second feedback voltages to generate a third feedback voltage; a comparator to compare the third feedback voltage with a reference voltage to output a control signal; and a driving circuit to control the switching elements. The second feedback voltage is generated based on a difference between input and output voltages of the DC-DC converter when the control signal from the comparator is low and based on the output voltage when the control signal is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.