Method for regulating a voltage and circuit therefor
US7782033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2006 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Mar 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/1216
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage regulator having an overload protection circuit and a method for protecting against an output voltage being less than a predetermined level. The voltage regulator has an overload protection circuit coupled between a feedback network and a regulation section. A power factor correction circuit is connected to the regulation section. An output voltage from the power factor correction circuit is fed back to the feedback network, which transmits a portion of the output voltage to the overload protection circuit. If the output voltage is less than the predetermined voltage level, a transconductance amplifier generates a current that sets an overload flag. Setting the overload flag initiates a delay timer. If the delay exceeds a predetermined amount of time, the overload protection circuit shuts down the voltage regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.