TPS62140A: Schematic check

Tonyx.wu

Part Number: TPS62140A

Tool/software:

Please help to check whether there is any problem with the schematic diagram. If there is any modification, please help to explain in detail. Thank you!

2 months ago

0 Colin Chen 2 months ago

TI__Genius 17461 points

Hi Tony,

Overall is good to me. It is better to change inductor to 1uH and COUT47uF to 22uF. This can help to have more suitable LC corner frequency for bettter loop stabilty. Because i see the there is a EC=220uF.

Thanks,

Colin

0 Tonyx.wu 2 months ago in reply to Colin Chen

Genius 3215 points

Please help to check whether the Layout is correct.

TPS62140ARGTR chip circuit input 6v, the output voltage is normal; But the 7v output voltage has been falling, I do not know whether it is the chip itself

0 Colin Chen 2 months ago in reply to Tonyx.wu

TI__Genius 17461 points

Hi Tony,

Could you test VIN, SW and Vout in normal and abnormal condition?

It would promote me to better debug, thanks!

Colin

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TPS62140A: Schematic check