TPS543C20A: Webench simulation results

Yuta Nishie

Genius 4925 points

Part Number: TPS543C20A

Hi,

I simulated the TPS543C20A with Webench.

The measurement conditions are Vin = 11 ~ 13V, Vout = 0.85, Iout_max = 20A.

At this time, it will drop before Vout reaches 0.85.

Could you please tell me the cause?

Best Regards,

Nishie

over 4 years ago

+1 Peter James Miller over 4 years ago

TI__Guru 56785 points

Yuta Nishie

How much output capacitance is there? The output voltage appears to be rising faster than 1.75V/ms and there is 16.7A of resistive load on the output.

Are you setting the Output Current Limit in the WeBench simulation?

0 Yuta Nishie over 4 years ago in reply to Peter James Miller

Genius 4925 points

Hi Peter James Miller -san,

Output capacitance is 560uF.

After changing the OCP threshold from 24A to 35A, I got Vout = 0.85V.

Best Regards,

Nishie

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TPS543C20A: Webench simulation results