TPS61169: How to measure loop stability

Kotaro Yamashita

Part Number: TPS61169

Hi team,

I would like to measure loop stability of TPS61169 with FRA. Could you share connection example if we have?

Regards,

Kotaro Yamashita

0 Sean Zhou over 5 years ago

Hi Kotaro,

Connect a 50ohm between "FB" pin and "RFB" and use the loop analyzer to test the loop stability.

Regards

Sean

0 Kotaro Yamashita over 5 years ago in reply to Sean Zhou

Hi Sean,

Thanks. Does RFB mean RSET? e.g. 10.2Ohm on Figure4

In this case 50Ohm seems too high compare with 10.2Ohm RSET. Is that correct?

Regards,

Kotaro Yamashita

0 Sean Zhou over 5 years ago in reply to Kotaro Yamashita

Hi Kotaro,

50ohm is ok, You can adjust the amplitude of small signal through this 50ohm to aviode interption, for example ~10mV.

Regards

Sean

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