TPS54331: Adding load to TPS54331 results in no output

Skylar Li

Intellectual 1980 points

Part Number: TPS54331
Other Parts Discussed in Thread: TINA-TI

Hi experts.

I design the TPS54331 like below:

I found that when there is no load, the Vout is 3.3V. However, when I add load in the output, there is no Vout. Could you pls help sovle it? Thank you!

over 2 years ago

0 Ruby Li over 2 years ago

TI__Expert 7520 points

Hi Skylar

Just to confirm that do you use the pspice model to simulate or do you do the test on the EVM? If it is pspice, would you please send me the file?

Thanks.

Ruby

0 Skylar Li over 2 years ago in reply to Ruby Li

TI__Intellectual 1980 points

Hi Ruby,

Thanks for your support! I have the tina-ti file in the attachment.

TPS54331-1.TSC

0 Zixu Wang over 2 years ago in reply to Skylar Li

TI__Expert 8100 points

Hi Skylar,

Since Ruby is on her leave, the response will be delayed. Thanks for understanding!

BRs

Zixu

0 Ruby Li over 2 years ago in reply to Skylar Li

TI__Expert 7520 points

Hi Skylar

It seems that the current generator has something wrong, please use a resistor as the loading.

Hope this helps.

Ruby

Power management

Power management forum

TPS54331: Adding load to TPS54331 results in no output