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TPS65251 TINA-TI Average Model

Toshio Ushikubo
Mastermind 9620 points
Other Parts Discussed in Thread: TINA-TI

Hello,

I simulated the gain and phase of data sheet figure 32 of “Design Guide - Step-By-Step Design Procedure” using TINA-TI average model.

Simulation results are fc=91kHz and phase margin is -5.39 degree and different from design target of figure 32.

(see attached file)3683.TPS65251 TINA-TI.pptx

Please advice the reason why design target and simulation results are so different.

Regards.