Am572X Gp Evm Dc Power Jack; Am572X Processor Module Power Nets - Texas Instruments AM572 Series User Manual

Power System
The AM572x Processor Module also includes a connector for a Lithium CR1220 non-rechargeable battery
for powering a battery back external Real Time Clock (RTC) MCP79410.
• The CR1220 battery is NOT included with the AM572x Evaluation Module and needs to be purchased
separately, if the MCP79410 is required.
• This battery should only be replaced by a trained technician.
• If the battery is installed, R416 must first be removed to avoid shorting the battery.
4.2 Power Nets
The power nets used in the AM572x Processor Module schematics are listed in
Table 3.
Net Description
12 V Main board supply voltage. Supplies all other voltages including LCD module. There is a 5A fuse from DC jack to
board. Powered when DC jack connected. Note that the DC LED (D41) indicates power.
LDO_VRTC Always on PMIC voltage for control signals (boot0/1), AM572x RTC bias and RTC oscillator analog power supply.
Supplied by PMIC LDOVRTC_OUT. Powered when DC jack connected.
5V0 5 V supply to the PMIC (LDO7USB_IN1, LDOUSB_IN2, LDO12_IN), LEDS, HDMI, and the expansion headers.
Powered when DC jack connected. TPS54531 switching regulator supply rated at 4A.
USB_5V Dedicated supply for USB3.0 ports. Supplied by 12V. TPS54531 switching regulator rated at 4A. Ramps during
PMIC power sequence.
PS_3V3 Supplies PMIC LDOs and SMPS rails (LDO34_IN, LDO9_IN, LDOLN_IN, SMPS1-9 rails), also supplies
VDD_3V3. Powered when DC jack connected. TPS54531 switching regulator supply rated at 4A.
VDD_3V3 Main I/O rail for the board and the expansion headers. Ramps during PMIC power sequence (with regen1). Load
switch from PS_3V3. Supplies AM572x VDDSHV1, VDDSHV2, VDDSHV3, VDDSHV4, VDDSHV6, VDDSHV7,
VDDSHV9, VDDSHV10, VDDSHV11 rails.
VDDA_1V8_PHYA Supplies AM572x PHYs (VDDA_SATA, VDDA_USB3). Supplied by PMIC LDO3_OUT. Ramps during PMIC
power sequence.
VDDA_1V8_PHYB Supplies AM572x PHYs (VDDA_HDMI, VDDA_PCIE0, VDDA_PCIE1, VDDA_PCIE). Supplied by PMIC
LDO4_OUT. Ramps during PMIC power sequence.
VDD_SHV5 Supplies AM572x RTC Power Group. Supplied by PMIC LDO2_OUT.
VDD_SD Supplies AM572x SD card IOs, pull-ups for SD card. Supplied by PMIC LDO1_OUT.
VUSB_3V3 Supplies AM572x USB 3.3V analog power supplies. Supplied by PMIC LDOUSB_OUT.
8
AM572x General-Purpose EVM Hardware
Figure 5. AM572x GP EVM DC Power Jack
Table 1. AM572x Processor Module Power Nets
Copyright © 2017, Texas Instruments Incorporated
www.ti.com
Table 1, Table 2 and
SPRUIG1 – September 2017
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