NXP Semiconductors QorIQ LX2160A - Power supply sequence

Table 6. Secondary power supplies (continued)
Part
identifier
Manufacturing
part number
Part
manufacturer
Power supply Specifications Description
U33 FPF1321UCX
FPF1321UCX
is a power
switch, not a
power supply.
OVDD is the
source of the
1.8 V power.
NOTE
ON
Semiconductor
EVDD 1.8 V or 3.3 V at 1 A
The LX2160A
processor does
not support
EVDD
operation at 3.3
V; however, the
LX2160ARDB
can enable it to
change
between 1.8 V
and 3.3 V on the
commands of
the SDHC IP
block for certain
board
configurations.
NOTE
eSDHC I/O power
U29 LTC7150 Linear
Technology
0V85 0.85 V at 20 A with ±3%
accuracy
Supplies power to the
Aquantia AQR107 PHYs,
Inphi IN112525 PHY, and
DDR memories
U30 MC34717EP/R2 NXP
Semiconductors
1V2 1.2 V at 5 A with ±3%
accuracy
Supplies power to the
Aquantia AQR107 PHYs
and Inphi IN112525 PHY
0V9 0.9 V at 5 A with ±3%
accuracy
Supplies power to the
Inphi CS4223 PHY
U31 MC34717EP/R2 NXP
Semiconductors
2V5 2.5 V at 5 A with ±3%
accuracy
Supplies power to DDR4
DIMM connectors
2V1 2.1 V at 5 A with ±3%
accuracy
Supplies power to the
Aquantia AQR107 PHYs
U3 MC34717EP/R2 NXP
Semiconductors
3V3_SB 3.3 V at 1.5 A Standby (“hot”) power for
the CPLD core
1V8_SB 1.8 V at 1.5 A Standby (“hot”) power for
the CPLD core and I/O
U27 MAX8902B Maxim
Integrated
TA_BB_VDD 0.8 V at 0.5 A Supplies power to the
LX2160A secure monitor
2.1.3 Power supply sequence
The external ATX power supply provides 5V_SB voltage when connected to an AC power outlet. This is an independent 5V power
supply that is always active. This voltage is used to generate the 3V3_SB and 1V8_SB standby power supplies, which are used
to power the CPLD.
NXP Semiconductors
LX2160ARDB Functional Description
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 4, 07/2020
Reference Manual 16 / 116