Active circuit protection for switched power supply system
US6600239B2 · kind B2 · utility
26Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2001 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Jul 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An active protection circuit for a MOSFET isolated switched power supply system operates to control the switching of the MOSFET isolation switches. A monitoring circuit operates to sense and turn off the isolation switch of the currently active power supply if it senses reverse current flowing through the switch. Simultaneously, a controller receives indication that the active power supply is out of specification, and actively switches the system voltage source to the other power supply. The controller actively ensures that the isolation switch of the out-of-specification power supply remains off until it determines otherwise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.