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Core VDD
DVDD/EVDD
USB 3.0
Wi-Fi card
AQR107_1V2
AQR107 VA
AQR107 core
TVDD/DDR4VPP
Mini-PCIe
DDR4 VTT
DDR4 REF
OVDD/LVDD
DDR4 G1VDD
XVDD
SVDD
U518: LTC3866
1V@16A
Eff1=88%
U519: LTC3866
3.3V@8A
Eff1=92%
U57: MC34716EP
1.2V@4A
0.6V@3A
Eff1=75%
Eff2=90%
Eff3=50%
12V input
12V
U12: LT3065
U13: LT3065
U507: LT3085
U523: LT8640
5V@2A
Eff1=90%
U511: LT8612
Eff1=90%
U520:
MC34VR500V8ES
Eff1=90%
Eff2=90%
Eff3=90%
Eff4=90%
Eff5=90%
SW1
SW2
SW3
SW4
LDO3
NXP
NXP
5V/4.5V/3.5V/3.3V
CPLD, flash, MUX
PHY, PCIe, others
2
1
1
1
2
2
1
1
3
3
3
1
QSPI, NAND, CPLD, others
Note:
The numbers at the middle of the block indicates the power up sequencing.
"1" is the first power up rail.
NXP DC/DC
LTC DC/DC
LTC LDO
SoC
Peripherals
Legends:
Figure 4. LS1046ARDB power supply block diagram
2.1.1 Primary power supply
The LS1046ARDB can be powered up through an external 12 V DC power adapter. The specifications of the DC adapter are as
follows:
• Input: 100-240 V AC, 50/60 Hz, 1.4 A
• Output: 12 V, 8.5 A DC power supply adapter (102 W) - standard
• Connector size: 5.5 mm (outside barrel) x 2.5 mm (inside barrel), center positive (4 pins)
The following figure shows the pinout details.
PIN NO.
1,4
2,3
OUTPUT
+V
-V
2
3
1
4
AC FG
-V connected toAC FG
Figure 5. Pinout details toward LS1046ARDB
2.1.2 Secondary power supplies
The table below describes the LS1046ARDB power supply devices that generate secondary power supplies on the board.
Power supplies
QorIQ LS1046A Reference Design Board Reference Manual, Rev. 2, 30 May 2019
NXP Semiconductors
17