INTERNATIONAL Rectifier has introduced the IR5001S universal high-speed controller/N-channel power MOSFET driver for high-performance, active ORing circuits.
The active ORing IC, housed in an SO-8 package, is used with an external MOSFET, replacing traditional diode ORing to increase efficiency and reduce power dissipation.
Active ORing is a key requirement for many high-end systems requiring maximum up-time, such as carrier-class communication equipment and telecom and datacom system servers.
As a bonus, the IR5001S provides additional diagnostic features that increase system up-time, maximising quality of service.
Active ORing combines two or more power sources to create a redundant power source, preserving the input power supply in case one of the input sources fails.
In the event of an input power failure, the active ORing circuit disconnects the non-functioning power source as quickly as possible to prevent the system bus voltage from falling, and to prevent large peak reverse currents.