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DRV2510-Q1: Fault response for Over current

NOBUO FUJIHARA
Genius 9355 points
Part Number: DRV2510-Q1

Hi Team,

I got question from customer.

Q.1) When device detects Over current event, how long will it take for output of device being set HiZ?

After Over current fault event, device will start Load Diagnostics.

Q.2) If the fault is still detected during full load diagnostics, which state device will stay?

Q.3) If over current is not detected during Load Diagnostics, will device be in stand_by mode with FAULT pin and FAULT flag are kept asserted?

Best regards,

Nobuo

  • 0
    TI__Guru** 109395 points

    Hi Fujihara-san,

    1. This should be similar to turn-off time: 47us
    2. The device goes into Hi-Z state. Details on device operating modes are available in the datasheet
    3. If there is no fault, EN is pulled high and STDBY is pulled low, the device will be in Active Mode

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • 0 in reply to Ivan Salazar
    TI__Genius 9355 points

    Hi Ivan-san,

    Thanks for your answer.

    May I confirm further device behavior after over current event?

    When device detects over current, then

    (1) the device sets output to HiZ, and INTZ=Low. (EN is kept High because EN is input from MCU)

    (2) then device starts Load Diagnostics automatically.

    (3) If Load Diagnostics ended without fault, device will return to Active mode and device sets INTZ=High

    (4) If device detects fault or over current detected during Load diagnostics, device will keep output as HiZ and INTZ=Low, and repeat Load Diagnostics.

    Q.4) Is above sequence correct?

    Q.5) EN and STDBY are input for DRV2510-Q1. I assume normally MCU doesn't have to control EN and STDBY in above scenario. Is my understanding correct?

    Best regards,

  • 0 in reply to NOBUO FUJIHARA
    TI__Guru** 109395 points

    Fujihara-san,

    Your assumptions are correct, they follow the descriptions given in the data sheet.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators