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TPS54360: Power on problem

Minghao Yin
Prodigy 365 points
Part Number: TPS560430
Other Parts Discussed in Thread: TPS54360

Hi Team,

This is our customer schematic about TPS54360.

And they found there are three questions about this device.

The blue is output voltage, the green is output current, and the pink is input voltage.

1.As the picture shows, when load change, the voltage will fluctuation in a short time.

2.And there is a overshoot, in the output voltage wavefrom.

3. This waveform is about output voltage. It's not monotonically continuous.

Is there any defect in customer's schematic?

  • 0
    TI__Mastermind 35210 points

    Hello,

    This behavior doesn't seem especially irregular for this device.

    Reviewing the schematic, I noticed it closely resembles our application circuit in the datasheet, with only major difference being the compensation network.

    Can I see there calculations? I am wondeirng if C6 inpacted their calculations at all.

    If they don't have their calculation anymore, please have them fill out the design tool for my review.

    https://www.ti.com/tool/download/SLVC452