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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 256

Hot Swap circuit meets InfiniBand specification

Pat Madden

Abstract

A Hot Swap circuit that meets InfiniBand specification is described.

Keywords

InfiniBand specification

LTC1642 Hot Swap controller

An InfiniBand backplane distributes bulk power at 12V DC to a number of plug-in modules, each having a DC/DC converter that steps the 12V supply down to the voltages required locally. A pass transistor on each module isolates the converter’s input capacitors during module plug-in, allowing modules to be added without disturbing others on the backplane. The requirements governing module hardware design are found in the InfiniBand Architecture Specification, Volume 2, Release 1.0. This article describes a circuit fully implementing ...

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