Hello,
TPS51206 datasheet says as follows.
8.2.1.2.5 VTTSNS Connection
To achieve tight regulation with minimum effect of trace resistance, a remote sensing terminal, the VTTSNS pin
should be connected to the positive terminal of the VTT pin output capacitor(s) as a separate trace from the highcurrent
path from VTT. Consider adding a low-pass R-C filter at the VTTSNS pin in case the ESR of the VTT
output capacitor(s) is larger than 2 mΩ. The R-C filter time constant should be approximately the same or slightly
lower than the time constant of the VTT output capacitance and ESR.
What if the low-pass R-C filter time constant is higher than the time constant of the VTT output capacitance and ESR?
What kinds of effects could be seen?
Best regards,
K.Hirano
