ADP7157 eval board input/output capacitance

Hello David,

Kindly refer to the ADP7157 datasheet regarding things to consider in choosing capacitors. Recommended capacitor values to ensure stability are mentioned on page 14.

ADP7157 (Rev. B) (analog.com)

Regards,

Nino

Hi Nino,

I'm aware about the datasheet section, which is why I'm confused -- the eval board uses less than the recommended minimum effective capacitance of 7uF.

Hi David,

The datasheet values already considered derating. This is why the same component values are used on the evaluation boards. I recommend that you use the component values from the evaluation board as these are tested and working circuit.

If you are calculating values for a specific application, you may want to consider derating and use a capacitor that provides the calculated capacitance at your programmed output voltage.

Regards,

Nino

Hi David,

The datasheet values already considered derating. This is why the same component values are used on the evaluation boards. I recommend that you use the component values from the evaluation board as these are tested and working circuit.

If you are calculating values for a specific application, you may want to consider derating and use a capacitor that provides the calculated capacitance at your programmed output voltage.

Regards,

Nino