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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 137

Short-circuit protection for boost regulators

Jeff Witt

Abstract

Short-circuit protection for boost regulators is discussed.

Keywords

Short-circuit protection

Boost regulator

LTC1477

LT1304

LTC1153

The basic boost regulator topology provides no short-circuit protection. When the output is pulled low, a large current can flow from the input through the inductor and catch diode, limited only by the series resistance of these parts. The result may be damage to the boost regulator, the load or the power source. This design note presents several solutions to this potential problem.

Short-circuit protection and load disconnect with the LTC1477

The LTC1477 protected high side switch contains an internal, low loss NMOS power switch. ...

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