TPS54526: What is the use of R3 in application ciruit

prasanna kumara G

Expert 1585 points

Part Number: TPS54526

Dear Team,

There is 1 resistor R3 connected for Soft start pin in application circuit.

What is the reason of this resistor.

Regards,

Prasanna G

over 7 years ago

0 Vincent Zhang(BSR) over 7 years ago

TI__Expert 4795 points

Hi Prasanna,

In TPS54526 there is a 6uA current sorucing from SS pin. Adding a resistor could somehow adjust the output voltage rising rate too. Of course we usually shorted the resistor.

Regards,

Vincent Zhang

Power management

Power management forum

TPS54526: What is the use of R3 in application ciruit