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.
|