TPS57160-Q1: Boot resistor to reduce SW node ringing spike

Hi,

Even though 6.8 ohm seems large, i think it is best to test it on the customer application. 

I would also check the operation of the circuit at the lowest VIN and max VIN with and without load over temperature and make sure that the circuit still stable

Thanks

-Arief

Hi Arief,

Thanks for the feedback.

I told customer to measure VSW node rising edge waveform to check if the ringing spike is normal, I am afraid of HS driver strength is not enough. 

Could you advise what kind of waveform/test should be verified?

Thanks.

Regards,

Allen

Hi Arief,

Please refer to attached file for without Rboot and Rboot=6.8 ohm SW ringing spike comparison.

TPS57160-Q1.xlsx

Regards,

Allen

Hi Arief,

Could you check the waveform and let me know if Rboot 6.8 ohm is ok or not?

Thanks.