Decoupling Capacitors Table - 2020.2 English

Xilinx Power Estimator User Guide for Versal ACAP (UG1275)

Document ID
UG1275
Release Date
2020-12-04
Version
2020.2 English

The decoupling capacitor table indicates the required decoupling based on the current estimation and the step load entered for VCCINT. The table lists six types of capacitors. The following is the size and self resonant frequency of each capacitor:

330µF-1210
Typical self resonant frequency is 0.3 MHz.
100µF-0805
Typical self resonant frequency is 0.5 MHz.
47µF-0603
Typical self resonant frequency is 0.8 MHz.
22µF-0603
Required for the transceivers. Typical self resonant frequency is 1.0 MHz.
10µF-0402
Typical self resonant frequency is 2 MHz.
1.0µF-0201
Typical self resonant frequency is 10 MHz.
Recommended: Xilinx recommends a PDN simulation is done to validate the decoupling capacitors quantity and placement is based on the completed PCB design.
Tip: More details such as ESR / ESL, manufacturer part number, and temperature range can be seen in the message on the power supply tab of the XPE.

Power sequencing requirements are given in the PMC / Power Sequencing dialog box.