Voltage regulator module control circuit
US7751158B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 20, 2007 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Jul 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An exemplary voltage regulator module (VRM) control circuit includes a VRM providing a plurality of phases, each of the phases connected to a control terminal of a corresponding electric switch; a comparator comprising a non-inverting terminal connected to a first power source and grounded via the electric switches respectively, an inverting terminal connected to a reference voltage, and an output terminal; and a control switch connected between an enable terminal of the VRM and ground, the control switch comprising a control terminal connected to the output terminal of the comparator, wherein, if one of the phases of the VRM is lost, the corresponding electric switch is turned off, and a voltage of the non-inverting terminal of the comparator is higher than the reference voltage, the comparator outputs a control signal to the control switch for turning on the control switch, thus turning off the VRM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.