Power Supplies - NXP Semiconductors QorIQ LS1028A Reference Manual

Power supplies

As a restriction, the following interfaces cannot be tested using the LS1043A interposer:
• DisplayPort
• SDHC2
• Octal SPI (XSPI)
• CAN
2.2 Power supplies
The LS1028ARDB generates all the voltages necessary for the correct operation of the
LS1028A processor, DDR4, PHYs, and numerous other peripherals. All power is derived
from an external 12 V DC power supply.
The following figures show the block diagram of LS1028ARDB power supplies:
12V, 5A
12V0_IN
Adaptor
PWR_EN
LTC2955-2
POWER
SWITCH
QorIQ LS1028A Reference Design Board Reference Manual, Rev. A, 02/2018
16
J 4
12V0
CHASSIS FAN1
J 5
CHASSIS FAN2
J 3
DUT SOCKET FAN
VIN
PS_3V3_PG
LT8609SEV
PS_5V0_PG
VIN
PS_VDD_EN
LTC7151S
PS_VDD_PG
LED
DDR3/2 PS
1.35/1.5V/1.8V
VIN
LTC7151S
PS_3V3_PG
LED
Figure 2-1. Power supplies - Part 1
Confidential Proprietary
5V0
5.0V
5 V @ 2A
I2C1_CH2
Current
Measuring VDD_CORE_PL
INA220
VDD
VDD
1/0.9 V @ 11A
1mOHm
WSL27261L000FEA 3W
USB_SDVDD
LPF 0.9V/1.0V@ 0.2A
USB_SVDD
0.9V/1.0V@ 0.2A
LPF
DP_SVDD
0.9V/1.0V@ 0.1A
LPF
SVDD
0.9/1.0 @ 5A
LPFx2
3V3
3.3V
3.3V @ 15A
USB_HVDD
LPF x2 3.3V @ .45 A
BOARD COMPONENTS
USB 1 (TYPE C) AND 2 (TYPE A)
CAN TRANSCEIVERS
MIKROCLICK MODULES
CORE & PLAT
VDD=1V0
Est 7A
LS1028 USB_SDVDD
LS1028 USB_SVDD
LS1028 DP_SVDD
LS1028 SVDD
BOARD COMPONENTS
CLOCKGEN VDDO
CPLD IO & VDD
DP PORT DP_PWR
SGMII PHY
M.2 CONNECTORS
SD CARD
eMMC MEMORY
I2C EEPROMs
CURRENT MONITOR INA220
TEMPERATURE MONITOR SA56004ED
RTC PCF2129AT
CAN TRANSCEIVERS
MIKROBUS CONNECTORS
LEDs
MISC PARTS (BUFFERS & TRANSLATORS
LS1028 USB_HVDD
NXP Semiconductors