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TPS51206: About Bode Plot for DDR4

Guru 21045 points
Part Number: TPS51206

Hi Team,

 

Our customer would like to know about bode plot for DDR4(at the following conditions).

Because, they worry whether the output of TPS51206 does oscillate so they would like to know a phase margin.

Could you please let us know if you have any information?

 

[Conditions]

・VDD=3.3V

・VDDQ=1.2V

・VTT=0.6V (for DDR4)

・Sink and Source current = +/-0A , +/-2.0A (total 4)

 

I found the bode plot for DDR3 in the datasheet.

However, we need the bode plot for DDR4.

 

 

I have one more question.

Is the phase margin affected by the Ambient temperature?

And, could you please let us know if the phase margin is affected by the other cause?

 

I’d greatly appreciate your verification.

 

Regards,

Kanemaru