ZCU111 Board User Guide 88
UG1271 (v1.1) August 6, 2018 www.xilinx.com
Chapter 3: Board Component Descriptions
Monitoring Voltage and Current
Voltage and current monitoring and control are available for the Infineon power system
controllers through the Infineon PowIRCenter graphical user interface. The PMBus interface
controllers and regulators listed in Tab le 3 -29 are accessed through the 1x3 PMBus
connector J19, which is provided for use with the Infineon PowIRCenter USB cable (Infineon
part number USB005) and can be ordered from the Infineon website [Ref 25]. The
associated Infineon PowerTool GUI can be downloaded from the Infineon website. This is
the simplest and most convenient way to monitor the voltage and current values for the
Infineon PMBus programmed power rails listed in Tabl e 3-2 9.
Each Infineon PMIC controller can report the voltage and current of its controlled rail to the
Infineon GUI for display to the user. Fourteen rails have a TI INA226 PMBus power monitor
circuit with connections to the rail series current sense resistor. This arrangement permits
the INA226 to report the sensed parameters separately on the PMBus. The rails configured
with the INA226 power monitors are shown in Ta ble 3 -29 .
As described in I2C0 (MIO 14-15), page 29, the I2C0 bus provides access to the PMBus
power controllers and the INA226 power monitors via the U23 PCA9544A bus switch. All
PMBus controlled Infineon regulators are tied to the IRPS5401_SDA/SCL PMBUS, while the
INA226 power monitors are separated on to INA226_PMBUS.
Figure 3-3, page 29 and Table 3-5, page 31 document the I2C0 bus access path to the
Infineon PMBus controllers and INA226 power monitor op amps. Also, see schematic
0381881. Power rail measurements are accessible to the system controller and RFSoC PL
logic through their respective I2C0 bus connections.
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