This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

[URGENT] TPS53624 ripple issue

Other Parts Discussed in Thread: TPS53624

Hola,

As subject, below is our schematic and the current design is TPS53624 from 12V to 1V with single phase, transfers output voltage is 1.00625V(without ROV).

Below figure is +1V normal waveform and we can see that the DRVH、DRVL and LL are all switching normally with small ripple(48mV).

DC_DC power SWITCH.PDF

And below figure we can see that it has a bigger ripple(70mV) at +1V in front of waveform.

If we zoom in the waveform as below figure and will see the DRVL open twice in transient time and I think that is causing the big ripple's root cause.

May I know that:

1. What reason causes the DRVL will open twice in transient time?

2. Our schematic has any error design?

Brs