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TPS22917: reverse current protection

Yasushi Fujiwara
Genius 12725 points
Part Number: TPS22917

Hi Experts,

I have a question about reverse current protection. The datasheet stated threshold current, 500mA(typ). If reverse current does not exceed IRCB how RCB will work? (For instance, IRCB is 200mA.)

Best Regards,
Fujiwara

  • 0
    TI__Genius 10855 points

    Hi Fujiwara-san, 

    Thanks for reaching out on E2E!

    RCB activation current is the amount of reverse current required across the device when it is on to enable the reverse current blocking and turn the FET off. The device is looking for a voltage drop from VOUT to VIN so that RCB can be enabled. When the device is on, it takes that amount of current across the on-resistance of the device to cause that voltage drop.

    VIN leakage current is the current that leaks across to VIN when RCB is active.

    Thanks,

    Arthur Huang

    To find the latest information on Power Switches, visit www.ti.com/powerswitch

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