TPS628501-Q1: Schematic review

Hi,

Thanks for sharing the schematic!

In application, TPS628501-Q1 device is set for COMP setting 2 and this compensation setting requires minimum output capacitance of 18uF. 

Currently there are 2x10uF is connected to output and with its DC rating the effective capacitance will be around 6/7uF according to capacitors selection.

Please check the effective capacitance of capacitor and add more output capacitors to fulfill min requirements.

Apart from this I didn't find any critical issue with the schematic.

Best regards,

Tanvee

Hi,

I think that there is a mistake, because the output supply voltage is at 1.8V and output capacitors are 10u X7S 16V 10% 0805.

So I think that we don't need to increase output capacitor value, are you agree?

Nest regards,

Baptiste,

Hi,

The comp setting resistor is set for  49.9kOhm that will set device in Comp setting 2.

And for that setting require 18uF capacitance. Please check you effective capacitance of output capacitors. If you think 2x10uF capacitors are able to provide min 18uF. then it is okay to use. Please check table9-1 in datasheet.

Best regards.

Tanvee

Hi,

Ok, we will add a 10uF capacitor in parralel and we will mount it if needed.

Below is the final schematic:

Is this new schematic ok for you?

Best Regards,

Baptiste

Hi Baptiste,

Yes, schematic looks to me. Thanks for sharing it.

Best regards,

Tanvee