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Texas Instruments introduces 18-V hot-swap controller

High-efficiency controller in 3-mm x 3-mm QFN protects server and telecom equipment

Apr 27, 2011

DALLAS (April 27, 2011) –Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced the industry’s smallest 18-V hot-swap controller with power limiting that protects server and telecom equipment from over-current, over-voltage or short circuit events. The TPS24720 controller with programmable FET safe operating area (SOA) protection comes in a 3-mm x 3-mm standard QFN package, increases system reliability and simplifies hot-swap design. For samples, modeling tool and evaluation module visit: www.ti.com/tps27420-pr.    


Power protection with current monitoring

The controller minimizes in-rush current and protects the load and the FET from potentially damaging transients. The TPS24720’s programmable current limiting feature allows it to control an external N-channel MOSFET and provide accurate current monitoring. In addition when programmed to a 25-mV current limit threshold, there is a 50-percent reduction in sense resistor power loss compared to competitive devices with the same accuracy. The TPS24720’s analog current monitor can provide real-time current data to ultra-low-power MSP430™ microcontrollers and TI’s UCD9081 power supply sequencer to monitor overall system operation.

Key features and benefits of TPS24720:

·         Wide input voltage range: 2.5 V to 18 V. 

·         Flexible design: programmable FET SOA power limit and fault timer.

·         Programmable current gain allows designer to balance efficiency and accuracy.

·         Accurate current monitoring.


Availability and pricing

The TPS24720 is available in volume now from TI and its authorized distributors in a 16-pin, 3-mm x 3-mm QFN package. Suggested resale pricing is $1.50 in 1,000-unit quantities. Other TPS247xx family members include the new TPS24700 and TPS24701, which are simple and accurate controllers that come in a small, 8-pin MSOP with a resale price of $1.10 in 1,000-unit quantities. In addition, the TPS24710/1/2 and TPS24713 have programmable FET SOA protection and are available in a 10-pin MSOP package with a resale price of $1.25 in 1,000-unit quantities.


Find out more about TI’s hot-swap and power distribution portfolio by visiting the following:

·         Hot-swap controllers and protection circuits: www.ti.com/protectioncircuitry 

·         TI E2E™ Community to ask questions and help solve problems with fellow engineers: www.ti.com/powerforum-pr.


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