Adaptive filter circuit for sampling a reflected voltage of transformer in a power converter and method thereof
US8664998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jan 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/344
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An adaptive filter circuit for sampling a reflected voltage of a transformer of a power converter includes a first switch for receiving the reflected voltage, a resistor having a first terminal and a second terminal, the first terminal of the resistor being coupled to the first switch, a capacitor coupled to the second terminal of the resistor for holding the reflected voltage, and a second switch coupled to the resistor in parallel, wherein the resistor and the capacitor develop a filter for sampling the reflected voltage which is sampled without filtering by the filter in a first period during a disable period of a switching signal and also sampled with filtering by the filter in a second period during the disable period of the switching signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.