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ORing power controllers offer intelligent monitoring of power supplies

Posted: 27 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:power controllers? ORing? power supplies? TI? MOSFET?

Texas Instruments Inc. has introduced a family of ORing power controllers promising advanced features and high performance that improve power distribution in 12V blade servers, N+1 telecom systems and redundant low-voltage processor power supplies.

The ICs provide a high-efficiency replacement for ORing diodes and offer intelligent monitoring and control of power supplies to prevent bus transient events from causing board-damaging faults or voltage spikes during operation.

The TPS241x family of ORing controllers support input voltages of 3V to 18V, and can control power supply voltages down to 0.8V. When used with a low Rds(on) n-channel MOSFET, the controllers significantly increase system efficiency and reduce power dissipation compared to today's standard ORing diode solutions.

The TPS241x devices seamlessly manage power distribution to multiple supplies, while protecting the system from potentially dangerous reverse-current or transient events by providing an extremely fast turn-off response of 130ns. In addition, the controllers feature a programmable turn-off threshold and an input filtering function to protect the power supply's integrity, especially when the system must adjust to various bus characteristics caused by extreme and heavy-use operating conditions.

The TPS2410 and TPS2412 controllers incorporate linear gate control, giving power system designers greater flexibility to implement ORing in high-power applications. The TPS2411 and TPS2413 controllers use ON/OFF gate control to support low-power buses that may experience large transient steps.

The TPS241x family of power controllers is available today in volume production. The devices come in a 14-pin, plastic TSOP. Suggested resale pricing for the TPS2410 and TPS2411 is $1.70 each in quantities of 1,000 units. The low-cost TPS2412 and TPS2413 versions, which come in an 8-pin TSOP, are $1.20 each in quantities of 1,000.

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Related Datasheets
Part Number Description Category
? TPS2411 Full Feaured N+1 and ORing Power Rail Controller (Rev. B) ICs, Interface
? TPS2412 N+1 and ORing Power Rail Controller (Rev. A) ICs, Interface
? TPS2413 N+1 and ORing Power Rail Controller (Rev. A) ICs, Interface
? TPS2410 Full Feaured N+1 and ORing Power Rail Controller (Rev. B) ICs, Interface



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