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TPS7A8300: PMLK LDO Experiment - Transient response

Minji Yu
Prodigy 50 points
Part Number: TPS7A8300


Tool/software:

Hello. I have an experiment with the TI Power Management Lab Kit LDO experiment Book. 

I'm experiencing challenges in experiment 6 analyzing the transient response.

As shown in the figure below, when the circuit is constructed and a step output current is applied, no overshoot or undershoot occurs on the output voltage.

If the R1 value is increased, there is still no voltage surge.
How can I fix this?

I'll attach a simulation file.
Thank you.

sbvm380.tsc

  • +1
    TI__Expert 7742 points

    Hey Minji,

    Thank you for sharing your results.

    Please note that while the simulation model provides a useful approximation, its transient behavior may not fully correlate with the real silicon performance. Variations can occur due to factors not captured in the model, such as internal parasitics, package effects, and layout-dependent behavior. For the most accurate representation. especially for transient events we recommend validating on the bench

    Thanks,

    Vahnroy