TPS61099: :TPS610994 GM/PM measuring

user4782171

Part Number: TPS61099

Hi Team,

The Internal FB resistor divider is implemented in TPS610994 (fixed output voltage versions). Would you please share how to measure the GM/PM for it?

Best regards,

Albert Lee.

over 3 years ago

0 Minqiu Xie over 3 years ago

TI__Mastermind 21565 points

Hi Albert:

The internal loop compensation is same between fix and adjustable version. You could use TPS61099-EVM for bode plot test.

0 Blake Weng over 3 years ago in reply to Minqiu Xie

Prodigy 10 points

Hi Sir,

Could you kindly advise us what R1 and R2 values should be to simulate TPS610994 by TPS61099? We found TPS610994 has much lower leakage current than TPS61099(R1=825K, R2=390k)

That means TPS610994 should have higher embedded resistence inside.

Thanks.

Best Regards,

Blake

0 Minqiu Xie over 3 years ago in reply to Blake Weng

TI__Mastermind 21565 points

Hi Blake:

Actually, the feedback resistance exact values do little influence to the loop. You could use Rbot=1 Meg ohm.

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TPS61099: :TPS610994 GM/PM measuring