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TPS1H100-Q1: TPS1H100AQPWPRQ1

Part Number: TPS1H100-Q1

Will the ST pin fault output be asserted for the "A" version of this chip if the programmable current limit is exceeded as set by the CL pin external resistor value?  The datasheet states that the output will be pulled low by "Current limit triggered".  So is "Current limit triggered" the CL programmable current limit, or the internal current limit (Ilim,nom Internal current limit 7A min and 13A max), or either?

I want to use this chip for to power a dc motor.  I want the ability to exceed my CL programmable current limit during motor start-up, and then detect a motor stall via the CL programmable current limit.  Is it possible to short CL to ground via a transistor during startup in order to provide the high motor startup inrush current, and then turn off the transistor to enable the CL programmable current limit?

  • Hi Wayne,

    "Current limit triggered" refers to either CL programmable or internal current limit (whichever is the lesser of the two will trigger first).

    Yes, that's fine to do, as long as the inrush current won't trip the internal current limit.

    Thanks,

    Patrick