ZHCSG44F June 2017 – October 2024 TPS650864
PRODUCTION DATA
The TPS6508641 device is intended to power the lower range of the Xilinx Zynq Ultrascale+ platform. It removes the need for an external 5 V regulator when compared with the TPS65086401 device and also supports a wider variety of Zynq Ultrascale+ power states. Figure 7-9 shows a simple example block diagram for an always-on system, while Figure 7-10 shows a block diagram for full power domain flexibility. See Xilinx's Ultrascale Architecture PCB Design for explanation of the power supply configurations.
The power up and power down sequences can be seen in Figure 7-11 and Figure 7-12. Regulators and GPOs are enabled by combination of CTL pins and regulator power good signals.
The TPS6508641 device is designed to be able to support always on and full power domain flexibility power modes. The low power states can be omitted if not required.
CTL4 is used to start the primary power sequence and CTL1, CTL3, and CTL5 should all be high initially to complete the power up sequence. For always-on case, CTL3 and CTL5 can be shorted with CTL4.
CTL6 is used to select BUCK3 voltage between BUCK3_VID and BUCK3_SLP_VID register bits. Logic level low will result in 1.2 V while logic level high will result in 1.1 V.
CTL2 is used to enable and disable SWA1 and is independent of the rest of the sequence.
When CTL1 is set low, GPO3 (PS_POR_B) is set low regardless of the power state and has 50 ms delay before going high after CTL1 goes high. It is used as a reset for the Zynq Ultrascale+ device. It can be pulled up to LDO3P3 (3.3 V) or BUCK6 (1.8 V) as preferred with a 10 kΩ resistor and a pushbutton can short this CTL pin to GND when MPSoC reset is desired.
GPO1 and GPO4 are used to control load switches when utilizing the low power modes. The load switches can be omitted for cases where low power modes are not necessary.
VTT LDO voltage used to power VPS_MGTRAVCC is configured to 0.9 V in order to support all variant speeds, including -3E designs. It is within the absolute voltage range and is not expected to impact performance for non-3E designs based on testing with the Ultra96 board. For more information on VPS_MGTRAVCC voltage, see Xilinx's Ultrascale Architecture PCB Design, Table 7-2 MPSoC PS Voltage Matrix by Speed/Temperature Grade.
A summary of the part number specific settings can be seen in Section 7.5.1.