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Hot-swap controller integrates power limiting technology

Posted: 03 May 2011 ?? ?Print Version ?Bookmark and Share

Keywords:hot-swap? controller? voltage? power?

Texas Instruments Inc. has introduced the TPS24720 controller that claims to be the smallest 18-V hot-swap controller with power limiting that protects server and telecom equipment from overcurrent, overvoltage or short circuit events.

The TPS24720 controller with programmable FET safe operating area (SOA) protection comes in a 3mm x 3mm standard QFN package and increases system reliability and simplifies hot-swap design.

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.

The TPS24720 provides wide input voltage range of 2.5-V to 18-V, programmable FET SOA power limit and fault timer design, programmable current to balance efficiency and accuracy and accurate current monitoring.

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