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TPS59641: TPS59641: TPS59641 Vcore for VRD12-IMVP7 tool measurement

kevin chang82
Prodigy 220 points
Part Number: TPS59641

Hi sirs,

We test the VNN(Vgfx) dynamic VID measurement.

test condition:

Vmax 1.150 V
Vmin .950 V
Static Icc  0 A
SVID Dn Slow
SVID Up Fast
High PS 0
Low PS 2

Voltage change 5us after ALERT to settled is 19mV.

It over spec. 11.3mV.

The change of Dynamic VID is too slow.

So I change Rcomp(R363) from 11K to 13.3K

The Dynamic VID is pass.

Is there any bad influence for this design R363 change to 13.3Kohm?

Please help to confirm.

Thanks.2211.tps59641.pdf

  • 0
    TI__Expert 5830 points

    Hi Kevin,

    It is ok to change Rcomp. However, I cannot find the difference between two snapshots you pasted. Another thing is that, to measure CSO# to ALERT# should be from the rising edge of CSO# rather than failing edge.

    Thanks

    Chasel