TPS560200 current limiting resistor for 12V 5A Input power supply

RAVI TEJA

Other Parts Discussed in Thread: TPS560200

Hi,

I am thinking of using TPS560200 Buck Converters for 3.3V 200mA on-board power supply. A 12V 5A SMPS will power up-to 3 such TPS560200 ICs/boards on the input side. Now, am wondering whether I should connect current limiting resistors on TPS560200 input side (Vin) just to prevent them from burnout since the power-supply is capable of driving upto 5A.

Can someone please help on whether a current limiting resistor is required and if required, what should be the resistor rating?

Regards,

Ravi

over 7 years ago

0 Eric Guo1 over 7 years ago

TI__Intellectual 2590 points

TPS560200 has current limit inside the IC, can limit the output current by itself.
i don't think you need to add the current limit at input side.
thanks!

0 RAVI TEJA over 7 years ago in reply to Eric Guo1

Intellectual 270 points

Thank you Eric Guo1 . Sorry for the delayed response. I waited to test and reply back. We tested the circuit today and TPS560200 is working fine without a current limiting resistor on 12V 10A input supply - just the way you said. Thanks again.

Thanks,
Ravi

Power management

Power management forum

TPS560200 current limiting resistor for 12V 5A Input power supply