LM25184-Q1: phase margin

Shinji Tsuji

Genius 14119 points

Part Number: LM25184-Q1
Other Parts Discussed in Thread: LM5185, LM5185-Q1

Tool/software:

Hi team,

Is there a way to simulate of measure phase margin of PSR flyback using LM25184-Q1?

regards,

14 days ago

0 Manuel Alva Hernandez 13 days ago

TI__Genius 15496 points

Shinji,

It is possible knowing the values of the RC Type II compensator used at the output of the internal E/A and simulating the loop gain of the PSR Flyback in DCM. Unfortunately, we do not have that tool available for LM25184-Q1. It is available for controller from the same family like LM5185. You can get the bode plots selecting the desired external compensator network, Lmag, VIN, Vout and Cout.

LM5185-DESIGN-CALC Calculation tool | TI.com

Thank you

0 Shinji Tsuji 13 days ago in reply to Manuel Alva Hernandez

TI__Genius 14119 points

Hi Manuel-san,

I am using LM25184-Q1. Is it possible to utilize LM5185-Q1 design calculator to draw bode plot?

If yes, could you please advise which value should I use for type II compensator?

regards,

0 Manuel Alva Hernandez 12 days ago in reply to Shinji Tsuji

TI__Genius 15496 points

Shinji,

I just asked the design engineer for these values. I will be back to you as soon as I get a response

Thank you

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LM25184-Q1: phase margin