Regulator over-voltage protection circuit with reduced standby current
US8947060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2010 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | May 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.