MAX8902B
3V3_SB
LX2160A TA_BB_VDD
TA_BB_VDD
0.8V @ 0.5A
PS_TA_BB_SEL
from CPLD
PS_TA_BB_PG_B
MC34717EP/R2
PS_LVAUX_EN
PS_LVAUX_PG
1V2
1.20V @ 5A
from CPLD
5V0 VIN[1:2]
IN112525 RT1_VDD*
AQR107_1 P0_VA12*
AQR107_2 P0_VA12*
0V9
0.9V @ 5A
CS4223 VDD
CS4223 AVDD
MC34717EP/R2
PS_2VX_EN
PS_2VX_PG
2V5
2.50V @ 5A
from CPLD
5V0 VIN[1:2]
MAX14591 VDD
MX25V4006 VDD
2V1
2.10V @ 5A
AQR107_1 VA21_*
AQR107_2 VA21_*
MC34717EP/R2
3V3_SB
3.30V @ 1.5A
5V0_SB VIN[1:2]
EPM2210 IO
PCF2129 VBAT
LTC3882 I2C_IO
MAX8902 TA_BB
1V8_SB
1.80V @ 1.5A
EPM2210 IO
EPM2210 VDD
Figure 5. Power supplies - Part 3
Note that several power supplies have onboard low-pass filters, to prevent board switching noise from coupling into sensitive
analog supplies. The figure below shows the filters used.
2.2uF
2.2uF
2.2uF =NFM18PC225B1A3
2.2uF =GRM15 5R60J225KE95
LPF
LPF
47uF
3nF
4.7uF
0.33OHm
LPF
10uF 1uF
5.1OHm
0.22uF
Figure 6. Passive low pass filters
2.1.1 Primary power supply
The primary power supply for the LX2160ARDB is an external 300 W ATX12V/EPS12V power supply. The following tables show
its main features.
Table 4. Primary power supply
Power supply Description
External ATX 12 V power
supply
Vin 90 - 264 Vac
Fin frequency 50 - 60 Hz
Iin < 8.5 A at 100 Vac, 4 A at 240 Vac
Power good Power-on delay time of 100 ~ 500 ms
Operating temperature range 0 ~ 50 °C on full load
Relative humidity 20~ 80%
NXP Semiconductors
LX2160ARDB Functional Description
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 4, 07/2020
Reference Manual 13 / 116
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