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TLVM13630: Max Cout Value

R.Fukunaga
Expert 2505 points
Part Number: TLVM13630

Tool/software:

Hi all,

I would like to ask you max output capacitance value of TLVM13630.

Is there a recommended value of output capacitor(max) for this device?

The minimum value is 25uF as follows.

If the output capacitor capacity is too large, the inrush current will be high and the device will not be able to start due to current limit protection.

If you have a recommend maximum value, please let me know.

Best Regards,

Ryusuke

  • +1
    TI__Genius 11675 points

    Hi Ryusuke,

    While there is no fixed recommended value here - the max value will be bounded by the loop response and as you mentioned - the current limit. The device has internal soft start and hiccup mode to deal with this inrush. 

    Based on your specs and application, there are a few things you can do here to get a good estimate of the output capacitance you will need:

    1. Simulate your circuit on WEBENCH (webench.ti.com/.../) and check the startup and transient waveforms and make sure it matches your specs.

    2. Use the quick start calculator of this device to get a sense of the loop response that you will get: https://www.ti.com/tool/TLVM136X0DESIGN-CALC 

    3. Finally, test your circuit on the Evaluation module of the device. 

    Hope this helps!

    Thanks,

    Best Regards,

    Taru