Power supply control circuit, and electronic control device, power supplying circuit, and power control integrated circuit equipped with power supply control circuit
US7800878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2007 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Feb 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/08104
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply control circuit is configured including a MOS-FET 61 connected between a DC power supply 10 and a load circuit 31 so that a body diode D300 formed between the drain and the source is in a forward direction; and a holding circuit 62 for maintaining the ON state of the MOS-FET 61 for a predetermined time when the power supply from the DC power supply 10 is stopped; where heat generation of the switching element by the surge voltage is suppressed when the surge voltage is generated to prevent breakdown of the switching element while preventing breakdown of internal circuits with respect to reverse connection of the power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.