Getting Started with the EVBMA7318-SPI Evaluation Board

最終更新日時： Apr 28, 2026 new サポート EVBMA7318-SPI

このドキュメントの内容

  • 1

    Out of the Box

  • 2

    Get Hardware

  • 3

    Configure Hardware

お客様の EVBMA7318-SPI

このドキュメントの内容

1. Out of the Box

The NXP analog product development boards provide an easy-to-use platform for evaluating NXP products. The boards support a range of analog, mixed-signal and power solutions. They incorporate monolithic integrated circuits (ICs) and system-in-package (SiP) devices that use proven high-volume technology. NXP products offer longer battery life, a smaller form factor, reduced component counts, lower cost and improved performance in powering state-of-the-art systems.

This page guides you through the process of setting up and using the EVBMA7318-SPI evaluation board.

1.1 Kit Contents and Packing List

The EVBMA7318-SPI kit contents include:

  • EVBMA7318-SPI board
  • Battery simulation cable x 1: power supply for battery cell controller (BCC) simulate each cell by series resistors
  • Current measurement cable x 1 - connect to SHUNT and its calibration NTC
  • Transform physical layer (TPL) daisy chain cable x 1: cable to communicate with other boards by TPL
  • Serial peripheral interface (SPI) communication cable x 2: cable to communicate with UMFT4222EV/controller board by SPI
  • Debug cable with UMFT4222EV board x 1

1.2 Additional Hardware

No additional hardware is required for device evaluation, however a power supply 24 voltage direct current (VDC) with current capability of 500 mA or a four-to-18-cell battery pack is recommended. In addition to the kit contents, the following (optional) hardware is beneficial when working with this kit:

  • External SHUNT and current resource that can be connected to SHUNT
  • Battery emulator board BATT-7318EMU (access link: BATT-7318EMU)
  • Power supply 5 VDC with current capability 500 mA

1.3 Minimum System Requirements

This evaluation board requires a Windows PC. Verifying that your system meets the minimum specifications (Windows® 11/10/8/7, Windows XP, or Vista in 32-bit or 64-bit version ) will ensure reliable performance while using this evaluation board.

1.4 Software

Software must be installed before working with this evaluation board. Install the following programs:

  • Graphical user interface (GUI): ScriptGUI V3.5+
  • ScriptGUI plugin for BMA7318

All listed software is available on the evaluation board's information page at EVBMA7318-SPI or from NXP GUI page SWBMS-ScriptGUI-D.

次へGet Hardware

2. Get Hardware

2.1 Board Features

The EVBMA7318-SPI evaluation board features the following:

  • Distributed battery management system (BMS) architecture
  • One BMA7318 on one board
  • Can measure voltage for up to 18 battery cells with high accuracy
  • 10 temperature-sensing channels
  • TPL isolation communication
  • SPI communication to controller and SPI2TPL bridge to forward data
  • Cell balancing current up to 300 mA
  • Current measurement channel with precision or fast mode
  • High electromagnetic compatibility (EMC) performance

2.2 Board Description

This board includes one BMA7318 device. As shown in the diagram, the board communicates with a controller board or controller PC through SPI and communicates with other cell monitoring unit (CMU) boards through TPL with transformer isolation. Each board measures lithium-ion batteries with four to 18 cells. The board operates from a nine VDC to 90 VDC power source.

Figure 1. EVBMA7318-SPI

Figure 1. EVBMA7318-SPI

2.3 Board Components

Figure 2 identifies important components on the board and Table 1 provides additional details on these components.

Figure 2. EVBMA7318-SPI Devices and Connectors

Figure 2. EVBMA7318-SPI Devices and Connectors

Table 1. Evaluation board featured components location.

Number Devices Description
1 BMA7318FAIAE 18-Channel Li-ion battery cell controller IC

2.4 Connectors

Table 2. J1-high-voltage connector.

Pin Name Description
1 NC No connect
2 NTC7 Should connect to an external NTC resistor for temperature sensing
3 NTC6 Should connect to an external NTC resistor for temperature sensing
4 NTC5 Should connect to an external NTC resistor for temperature sensing
5 NTC4 Should connect to an external NTC resistor for temperature sensing
6 NTC3 Should connect to an external NTC resistor for temperature sensing
7 NTC2 Should connect to an external NTC resistor for temperature sensing
8 NTC1 Have connected to an internal NTC resistor for PCB temperature sensing
9 GND Ground of BCC
10 C1P Cell 1 voltage sensing point
11 C3P Cell 3 voltage sensing point
12 C5P Cell 5 voltage sensing point
13 C6Pb Cell 6 voltage sensing point b
14 C8P Cell 8 voltage sensing point
15 C10P Cell 10 voltage sensing point
16 C12Pa Cell 12 voltage sensing point a
17 C13P Cell 13 voltage sensing point
18 C15P Cell 15 voltage sensing point
19 C17P Cell 17 voltage sensing point
20 PVWR Power supply for BCC
21 NC No connect
22 NTC8 Should connect to an external NTC resistor for temperature sensing
23 NTC9 Should connect to an external NTC resistor for temperature sensing
24 GND Ground of NTC resistors
25 GND Ground of NTC resistors
26 GND Ground of NTC resistors
27 GND Ground of NTC resistors
28 GND Ground of NTC resistors
29 GND Ground of NTC resistors
30 COM Cell 0 voltage sensing point
31 C2P Cell 2 voltage sensing point
32 C4P Cell 4 voltage sensing point
33 C6Pa Cell 6 voltage sensing point a
34 C7P Cell 7 voltage sensing point
35 C9P Cell 9 voltage sensing point
36 C11P Cell 11 voltage sensing point
37 C12Pb Cell 12 voltage sensing point b
38 C14P Cell 14 voltage sensing point
39 C16P Cell 16 voltage sensing point
40 C18P Cell 18 voltage sensing point

Table 3. J2-TPL connector.

Pin Name Description
1 H_INOUT+ Positive of TPL_H twisted wire
2 H_INOUT- Negative of TPL_H twisted wire

Table 4. J4-SPI connector.

Pin Name Description
1 WAKEIN_CON Wake-up input
2 CSN SPI chip select input from controller
3 MOSI SPI target data input from controller
4 MISO_CON SPI target data output to controller
5 SCLK SPI clock input from controller
6 GND GND of SPI

Table 5. J5-GPIO connector.

Pin Name Description
1 GPIO0 GPIO0 debug
2 GPIO9/ALARMOUT GPIO9/ALARMOUT debug
3 GPIO1 GPIO1 debug
4 GPIO8 GPIO8/SPI status indication debug
5 GPIO2 GPIO2 debug
6 GPIO7 GPIO7/OCOUT debug
7 GPIO3 GPIO3 debug
8 GPIO6 GPIO6 debug
9 GPIO4 GPIO4 debug
10 GPIO5 GPIO5 debug
11 GND GND of GPIO
12 GND GND of GPIO

Table 6. J6-ISENSE connector.

Pin Name Description
1 GND GND of NTC
2 ISENSE- Current sense input _ Negative
3 ISENSE+ Current sense input _ Positive
4 NTC_SHUNT Should connect to SHUNT NTC resistor for temperature sensing

前へOut of the Box
次へConfigure Hardware

3. Configure the Hardware

Figure 3 and Figure 4 present a typical hardware configuration that includes the development board, power supply and Windows PC workstation.

3.1 Setup Based on Battery Simulation Cable

The setup uses ScriptGUI and requires the UMFT4222EV to connect the EVBMA7318-SPI to the controller PC. The EVBMA7318-SPI will be debugged through ScriptGUI.

Figure 3. EVBMA7318-SPI Hardware Setup Based on Battery Simulation Code

Figure 3. EVBMA7318-SPI Hardware Setup Based on Battery Simulation Code

This setup is suitable for EVB based on the BMA7318FAIAE. For instructions on connecting the UMFT4222EV, refer to the ScriptGUI help document (see Figure 4).

Figure 4. Using ScriptGUI for Guidance for Connecting UMF4222EV

Figure 4. Using ScriptGUI for Guidance for Connecting UMF4222EV

3.2 Setup Based on BATT-7318EMU

Figure 5. SPI2TPL Application Setup Based on BATT-7318EMU

Figure 5. SPI2TPL Application Setup Based on BATT-7318EMU

前へGet Hardware
次へDesign Resources

Design Resources

Board Information

Additional References

  1. EVBMA7318-SPI - EVBMA7318-SPI—Detailed information on this board, including documentation, downloads, and software and tools
  2. BMA7318-BMI7318-BMA7518 - BMx7318—Detailed information on BMx7318, 18-Channel Li-ion battery cell controller IC.
  3. BATT-7318EMU - BATTT-7318EMU—18-Channel Li-ion battery emulator board.

前へConfigure Hardware