TPS5430: Not work at low temperature (inverting circuit)

PAN-M

Part Number: TPS5430

Dear team,

In the inverting output circuit, it do not work at low temperature.
The following is a circuit diagram.
Would you please any comment.

Best Regards,
PAN-M

over 5 years ago

0 Andy Chen over 5 years ago

TI__Mastermind 34875 points

Hi Pan,

Pls upload the circuit again as it can't be opened.

I suggest you to apply TPS5430EVM and modify the circuit for your application.

B R

Andy

0 PAN-M over 5 years ago in reply to Andy Chen

Mastermind 8375 points

It seems to be the over current at start up.

8712.TPS5430INV.pdf

Regards,
PAN-M

0 Andy Chen over 5 years ago in reply to PAN-M

TI__Mastermind 34875 points

Hi Pan,

Pls short output inductor L6 to see if any improvement.

Pls resend the waveform to me at andy.chen@ti.com, remark each channel for which node waveform.

I will close this thread first.

B R

Andy

0 PAN-M over 5 years ago in reply to Andy Chen

Mastermind 8375 points

Thank you for support.

OK, I will ask a check to a customer.

Thanks,
PAN-M

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TPS5430: Not work at low temperature (inverting circuit)