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BrianG · 01.27.2012, 10:47 AM

FYI: ALL switching "bucking" regulators can potentially send full battery voltage to the output. They all have a FET in between the input and output that switches and provides (along with the output coil, Schottky diode, and cap) the step-down action. If that FET decides to fail by internally shorting, then there is nothing to limit the input voltage from making its way to the output.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	01.27.2012, 10:47 AM FYI: ALL switching "bucking" regulators can potentially send full battery voltage to the output. They all have a FET in between the input and output that switches and provides (along with the output coil, Schottky diode, and cap) the step-down action. If that FET decides to fail by internally shorting, then there is nothing to limit the input voltage from making its way to the output.