The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2006
Filed:
Aug. 16, 2004
Weidong Fan, Torrance, CA (US);
Goran Stojcic, Redondo Beach, CA (US);
Daniel Yum, Poway, CA (US);
International Rectifier Corporation, El Segundo, CA (US);
Abstract
ORing diodes are used for power redundancy. In order to reduce the power loss due to the diode forward drop voltage, active ORing power MOSFETs are proposed to replace the diodes. With the active ORing controller and power MOSFETs, the power loss can be easily decreased by 90%. To make an N-channel MOSFET work like a diode when it is in reverse and have a very small forward voltage drop when it is in forward, an ORing controller is provided. Its offset, hysteresis, and propagation delay times are optimized for speed, stability, and noise immunity. Its ORing function is tested in an ORing demo board. Its FET check feature makes a live checkup of the ORing power MOSFETs to improve the reliability of the redundant power system.