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TPS1H100-Q1: High speed current sensing

Oliver Kim7
Expert 3935 points
Part Number: TPS1H100-Q1

Dear team,

Is it possible to sense 40kHz to 50kHz PWM current?

Datasheet says "only up to 2kHz" and I see tough "timing requirement - current sense", but that case just describe depending on input ON/OFF signal.

What if IN is always turned ON and output switch with 50kHz by external switch? Can TPS1H100-Q1 sense it?

Thank you.

Regards,

Oliver Kim 

  • 0
    TI__Mastermind 32650 points

    Hi Oliver,

    If you are leaving IN high and externally PWMing the output, TPS1H100 should be able to sense the current variation and report it through the CS.

    Do note that the sense waveform will be complicated because of the the fast switching and parasitics of the system.