Product category:
Power Supply ICs and Controllers
News Release from: Xicor | Subject: X80070, X80071, X80072 and X80073
Edited by the Electronicstalk Editorial
Team on 13 January 2003
Hot-swap controllers ease the stress for
MOSFETs
Xicor's new generation of negative supply hot-swap controllers provide more design flexibility by integrating functions that promote system reliability.
Xicor's new generation of negative supply hot-swap controllers provide more design flexibility by integrating functions that promote system reliability The X80070, X80071, X80072 and X80073 allow hardware design flexibility by solving the problems associated with voltage sagging or high current glitches on the backplane, power mosfet stress due to overheating, and variations due to capacitive load and downstream DC/DC modules
This article was originally published on Electronicstalk on 24 Jan 2002 at 8.00am (UK)
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The devices' hot-swap features allow for insertion and extraction of line cards, network interface cards and other peripherals while 48V power is present on the backplane.
The controllers integrate several new hot-swap functions in order to meet the demands of 30 to 110V live power backplanes.
A selectable gate current feature provides for design flexibility to account for variations of load, current, transients and power mosfet selection.
Hard short detection with retry, overcurrent safety limit during insertion, and built-in contact bounce and high frequency noise filter allow for additional protection during live insertion and system start up.
The integrated overvoltage, undervoltage and overcurrent protection circuits can be used as a complete electronic circuit breaker.
Additional functions include both power-ready and hard-short detection indicators to report status of the power distribution system.
The devices feature a battery or auxiliary voltage backup mode with undervoltage detection down to 30V, and an overcurrent safety bypass limit during insertion up to three times to minimise FET stress.
Slew rate currents from 10 to 160mA are settable for gate control, to optimise surge current versus transient response.
With the new devices, Xicor now offers the most comprehensive portfolio of integrated hot-swap and power management solutions.
Production samples are available for the X80070, X80071, X80072, and X80073 in 20-lead QFN packaging.
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