Switched mode power supply compensation loop
US9564807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2014 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Dec 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus (200) for tuning a feedback loop that is arranged to regulate an output voltage (Vout) of a switched mode power supply, SMPS (100), in accordance with a control law defined by control law parameters. The apparatus includes a natural frequency estimator (210) arranged to determine a respective estimate of a natural frequency of each of two zeros in a transfer function that corresponds to a model of the feedback loop. The natural frequency estimator (210) comprises: an output voltage deviation determining module (212) arranged to determine, for each of a plurality of points in a search space, wherein the coordinates of each of the points correspond to candidate values of the natural frequencies of the zeros, a deviation of the output voltage of the SMPS that occurs in response to a variation in a load current of the SMPS; and a goal function evaluation module (214) arranged to evaluate a goal function using the determined deviation of the output voltage of the SMPS at each of the plurality of points to obtain a measure of at least one of a size and a recovery time of the respective output voltage deviation. The natural frequency estimator (210) is arranged to estimate a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.