TPS51200: The noise of VREFOUT of TPS51200

zhijian xu

Part Number: TPS51200

Hi Ti team
I am using TPS51200 to generate VTT and VREFOUT for DDR4, but I find that the noise level of VREFOUT is greater than that of VREFIN.This is very confusing. Is this normal?

Thanks
Zhijian

over 3 years ago

0 Weidong Zhu over 3 years ago

TI__Expert 5965 points

Hi Zhijian,

REFOUT supplies the reference to DDR4 chips, so it has some load, and possible some dynamics. So it's normal it has higher noise than REFIN.

Regards,

Weidong

Power management

Power management forum

TPS51200: The noise of VREFOUT of TPS51200