TPS561201:Possibility of shutdown due to downstream circuit

k-iwase

Part Number: TPS561201

Tool/software:

To the person in charge

I am thinking of making such a circuit on a hand-assembled board, but is there a possibility that the TPS561201DDCR will shut down for some reason?

In the attached circuit diagram, NAP-50A is a catalytic combustion gas sensor. Also, the circuit before R3 and R10 is made on a printed circuit board and soldered to the universal board by pin headers.

I would appreciate your response.

Best regards,

K.iwase

1 month ago

0 Shipeng Cheng 1 month ago

TI__Genius 9060 points

Hi,

You can measure SW waveform by oscilloscope and compared to datasheet to see if the device works well. Thanks.

0 k-iwase 1 month ago in reply to Shipeng Cheng

Prodigy 20 points

Dear Shipeng Cheng,

Thank you for your reply.

What do you think could be the cause of the TPS561201 shutting down?

Or, what could be the reason for no current flowing at all even if the voltage is being output normally (2.5V)?

Best regards,

K.iwase

0 Shipeng Cheng 1 month ago in reply to k-iwase

TI__Genius 9060 points

Hi,

is the output voltage 2.5V? Your schematic is correct, so you can remove NAP-50A first and use a resistor to see if the converter works well.

Regards,

Shipeng

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TPS561201:Possibility of shutdown due to downstream circuit