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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:
DDR3/2 PS
1.35/1.5V/1.8V
USB_SDVDD
0.9V/1.0V@ 0.2A
USB_SVDD
0.9V/1.0V@ 0.2A
SVDD
0.9/1.0 @ 5A
LPFx2
LPF
LPF
LS1028 USB_SDVDD
LS1028 USB_SVDD
LS1028 SVDD
CORE & PLAT
Current
Measuring
INA220
I2C1_CH2
VDD=1V0
Est 7A
VDD_CORE_PL
1mOHm
WSL27261L000FEA 3W
VDD
1/0.9 V@ 11A
DP_SVDD
0.9V/1.0V@ 0.1A
LPF
LS1028 DP_SVDD
12V0
J 5
12V, 5A
Adaptor
CHASSIS FAN1
LTC7151S
VIN
PS_VDD_PG
LED
LTC7151S
VIN
PS_3V3_PG
LED
3.3V
3.3V
@ 15A
VDD
3V3
PS_3V3_PG
LT8609S E V
VIN
PS_5V0_PG
5.0V
5V @ 2A
5V0
LPF x2
LS1028 USB_HVDD
USB_HVDD
3.3V @ .45 A
POWE R
SWITCH
LTC2955-2
PWR_EN
12V0_IN
J 3
J 4
CHASSIS FAN2
DUT SOCKET FAN
PS_VDD_EN
B OARD COMPONE NTS
CLOCKGEN VDDO
CPLD IO & VDD
DP PORT DP_PWR
SGMII PHY
M.2 CONNE CTORS
SD CARD
eMMC MEMORY
I2C EEPROMs
CURRENT MONITOR INA220
TEMPERATURE MONITOR SA56004ED
RTC PCF2129AT
CAN TRANSCEIVERS
MIKROBUS CONNECTORS
LEDs
MISC PARTS (BUFFERS & TRANSLATORS
B OARD COMPONENTS
USB 1 (TYPE C) AND 2 (TYPE A)
CAN TRANSCEIVERS
MIKROCLICK MODULES
Figure 3. Power supplies - Part 1
Power supplies
QorIQ LS1028A Reference Design Board Reference Manual, Rev. b, 11/2018
NXP Semiconductors
COMPANY CONFIDENTIAL
15
Содержание QorIQ LS1028A
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