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Date: 8th May 2011

3mmx3mm 18-V hot-swap controller with programmable FET SOA protection

Texas Instruments has introduced the 18-V hot-swap controller chip 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

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, claims TI. 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.

TPS24720 operates from a Wide input voltage range of 2.5 V to 18 V and feature programmable current gain with 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.


 
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