TPS5432: Output Resistive Divider Power Handling

so do I need to source a resistor with a power rating of 11.1 Watts? 

Hi Pragash,

The feedback resistors does not handle the output current of the regulator. The current through the resistive divider should be atleast 100 times greater than feedback bias current as explained below:

You can find more information about this in the following app note in section 5: https://www.ti.com/lit/an/slva477b/slva477b.pdf?ts=1653983179717&ref_url=https%253A%252F%252Fwww.google.com%252F

Let me know in case of further questions.

Thanks!

Best regards

Sneha 

hi sneha,

thanks for the reply. how do I calculate the power required for the resistor? power required for the resistor = IR1/2 x Vout?

Hi Pragash,

Yes. correct.

Thanks and Regards

Sneha

Sneha,

what will be the IR1/2 value for TPS5432? take note that the maximum power handling I have seen for a resistor is 3W. if we need more, it's not practical.