NXP Semiconductors i.MX 8M Plus, Руководство пользователя, Страница: 5 / 21

Table 1. Power rails under measurement (continued)
NO. Seq. Power rail
Operating range (V)
Monitor
number Range1
(mA)
Rs1
(OHM)
Range2
(mA)
Rs2
(OHM)
Min Normal Max
19 Q
LPD4_VDD1 1.7 1.8 1.95 M6 20 4.99 - -
20 S
BB_VDD_1V8 1.65 1.8 1.89 M6 2000 0.05 - -
21 B
7
NVCC_DRAM_1V1 1.045 1.1 1.155
M1
2000 0.05 48.8 2.05
22 E LPD4_VDDQ 1.06 1.1 1.17
M3
2000 0.05 48.8 2.05
23 F
LPD4_VDD2 1.06 1.1 1.17 M3
2000 0.05
- -
24 X
8
VDD_USB_3V3 3.069 3.3 3.63 M8 100 1 - -
25 Z
VDD_SD1_3V3 2.7 3.3 3.6 M8 400 0.25 - -
26 a
BB_VDD_3V3 3 3.3 3.6 M8 2000 0.05 - -
- 9
BB_VSD_3V3 - - - - - -
27 G 10
NVCC_SD2 1.65 1.8 1.95 M3 100 1 - -
Note:
1. The content in italics means that the power rails can support dual-range measurement.
2. Sensing resistance and range values correspond to values populated on 8MPLUSLPD4-PWR board revision A1. See
the latest schematic for detailed information.
3. The Rs2 value is calculated by adding a low shunt resistor and a high shunt Rs1. See the latest schematic for detailed
information.
2.2 Power tree
Figure 1 shows the power tree of the PWR CPU board. The PWR board (8MPLUSLPD4-PWR) supply design is identical to the
standard CPU board (8MPLUSLPD4-CPU) but with current sense resistors of a suitable value inserted between the PMIC and
CPU for each key power rail measurement.
NXP Semiconductors
Board overview
i.MX 8M Plus Power Measurement Board User's Guide, Rev. 0, 29 April 2021
User's Guide 5 / 21