I have searched in vain for a reference design or ap note regarding using a switching voltage regulator to limit current. Want to limit current to a solenoid after it is actuated to maintain full in position. Nominal 24 volts at .5 amps required, 42 volts available at input.
The closest device we have to limit current in this voltage range is the TPS2660. You would need to put a protection Schottky diode on the output to protect the device against the negative voltage associated with switching an inductive load, but other than that, the device supports a current limit of 500mA and voltage up to 60V. Do you think a device like this could work?
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