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TPSM82902: How to use hiccup mode instead of latch mode

YoungHan Song
Prodigy 80 points
Part Number: TPSM82902

Hello,

I utilized the TPSM82902EVM in various scenarios, including voltage tracking and full load tests.

I noticed that when it encounters fault conditions, it does not enter hiccup mode for output voltage protection.

Could you help me with a method to recover the output voltage without turning the input voltage on/off

Best regards,

Younghan.

  • +1
    TI__Mastermind 32320 points

    Hello Young, 

    which fault that is? here some of the fault that can heppen and how the device can recover from it: 

    • In Current LIMIT, if the inductor current exceeds the high-side FET current limit (ILIMH), the HS FET will tunr off and the low-side switch is turned on to ramp down the inductor current. The HS will not turn on until  the current in the low-side FET has decreased below the low-side FET current limit threshold.
    • In thermal shut down: When TJ decreases below the hysteresis, the converter resumes normal operation, beginning with soft start.
    • Under-voltage Lockout:  both the power FETs will be turned off. The device will be fully operational for voltages above the rising UVLO threshold and turns off if the input voltage trips below the threshold for a falling supply voltage.

    Thanks 

    Tahar

  • 0
    TI__Mastermind 18510 points

    Younghan, any more support needed based on Tahar's comments? if no, we will close the thread.

    Yuchang