Off-line regulator with pass device and associated method
US8917076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An off-line regulator has a rectification circuit configured to rectify an AC line voltage into a rectified line voltage, a pass device coupled between the rectified line voltage and a first capacitor, and a converter. The pass device is configured to be turned ON or OFF according to a comparison signal indicating whether the rectified line voltage is over a threshold voltage. The first capacitor delivers an interim voltage into the converter which supplies power to a load. Wherein a second capacitor coupled across a driver which driving the pass device is charged by the first capacitor when the comparison signal is at a first state, and the driver is boosted when the comparison signal is at a second state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.