TPS54202: Check the Condition for Input 14V, Output 13V.

Louis Han15

Genius 4680 points

Part Number: TPS54202

Hellow

Can I use this device below the following conditions?

Input Voltage : 14V ~ 15V

Output Voltage : 13V

Output Current : 2A

if Possible, Can you recommend circuit?

Regards.

over 7 years ago

0 Shawn Nie over 7 years ago

TI__Genius 10070 points

Hi Louis,

In theory, it is feasible, but there is voltage drop on the Rdson, DCR, PCB resistor. You'd better use the inductor which has small DCR. You can refer to the datasheet and user's guide to design the schematic. And you can choose the values of inductor and output capacitor as below.

www.ti.com/.../slvuap8.pdf

http://www.ti.com/lit/ds/symlink/tps54202.pdf

Shawn

0 Louis Han15 over 7 years ago in reply to Shawn Nie

Genius 4680 points

Hi Shawn

Thanks for your Support.

Please check if design is possible.

If possible, please suggest a reference.

Regards.

0 Shawn Nie over 7 years ago in reply to Louis Han15

TI__Genius 10070 points

Hi Louis,

I think you can refer to "Vout=12V application" to design you schematic. Choose L=22uH, Cout=44uF.
In addition, I don't recommend you use this device at this application, because there is little margin for Vin in order to output 12V. Why don't you use LDO? And what is the end equipment?

Shawn

Power management

Power management forum

TPS54202: Check the Condition for Input 14V, Output 13V.