Short-circuit protection for boost regulators is discussed.
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.
The LTC1477 protected high side switch contains an internal, low loss NMOS power switch. ...