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MAX17262X Evaluation Kit
Evaluates: MAX17262
General Description
The MAX17262X evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount PCB that evaluates the
stand-alone ModelGauge™ m5 host-side fuel-gauge IC
for lithium-ion (Li+) batteries in handheld and portable
equipment.
The MAX17262X EV kit includes the Maxim DS91230+
USB interface, IC evaluation board, and RJ-11 con-
nection cable. Windows
®
-based graphical user inter-
face (GUI) software is available for use with the EV
kit and can be downloaded from Maxim’s website at
www.maximintegrated.com/products/MAX17262
(under the
Design Resources
tab). Windows 7 or newer
Windows operating system is required to use with the EV
kit GUI software.
Quick Start
Required Equipment
●
●
●
●
●
●
●
MAX17262X EV kit
Lithium battery pack of desired configuration
Battery charger or power supply
Load circuit
DS91230+ USB adapter
RJ-11 6pos reverse modular cord
PC with Windows 7 or newer Windows operating
system and USB port
Features and Benefits
●
ModelGauge m5 Algorithm
●
Monitors from 1S Cell Packs
●
Battery Pack Input Voltage Range of +2.3V to +4.9V
●
Thermistor Measurement Network
●
Windows 7 or Newer Compatible Software
●
Proven PCB Layout
●
Fully Assembled and Tested
Note:
In the following sections, software-related items are
identified by bolding. Text in
bold
refers to items directly
from the EV kit software. Text in
bold and underlined
refers to items from the Windows operating system.
Procedure
The EV kit is fully assembled and tested. Follow the
steps below to install the EV kit software, make required
hardware connections, and start operation of the kit. The
EV kit software can be run without hardware attached. It
automatically locates the hardware when connections are
made. Note that after communication is established, the
IC must still be configured correctly for the fuel gauge to
be accurate.
1)
Visit
www.maximintegrated.com/products/
MAX17262
under the
Design Resources
tab to
download the latest version of the EV kit software.
Save the EV kit software to a temporary folder and
unpack the ZIP file.
Install the EV kit software on your computer by run-
ning the MAX17262_Vx_x_x_Install.exe program
inside the temporary folder. The program files are
copied, and icons are created in the Windows
Start
menu. The software requires the .NET Framework
4.5 or later. If you are connected to the Internet,
Windows automatically updates .NET framework as
needed.
MAX17262 EV Kit Files
FILE
MAX17262_Vx_x_x_Install.exe
DECRIPTION
Installs all EV kit files on
your computer.
2)
Ordering Information
appears at end of data sheet.
ModelGauge is a trademark of Maxim Integrated Products, Inc.
Windows is a registered trademark and registered service mark
of Microsoft Corporation.
319-100229; Rev 0; 8/18
MAX17262X Evaluation Kit
Evaluates: MAX17262
3)
The EV kit software launches automatically after
install or alternatively it can be launched by clicking
on its icon in the Windows
Start
menu.
Connect the DS91230+ adaptor to a USB port on the
PC. The DS91230+ is a HID device and is located
automatically by Windows without the need to install
additional drivers.
Make connections to the EV kit board based on cell
pack configuration as shown in
Figure 1.
The load or
charger circuit can be connected at this time as well.
The cell connects between the PACK- and PACK+
pads and the charger/load connects between the
SYSGND and SYSPWR pads.
Connect the RJ-11 cable between the USB adapter
and the EV kit board. The GUI software establishes
communication automatically.
At power up, the IC defaults to EZ Configuration. If
you have a custom .INI file for your application it can
be loaded at this time.
Communication Connections
4)
5)
The RJ-11 connector provides all signal lines necessary
for I
2
C communication between the IC and the software
GUI interface. When developing code separately, connec-
tions to the communication lines can be made directly to
the board.
Table 1
summarizes the connections. The user
must apply the appropriate external pullup resistors to the
communication lines when not using the DS91230+ com-
munication interface.
External Thermistor
6)
7)
The MAX17262 can be configured to use internal temper-
ature measurements or an external thermistor. All EV kit
boards come with a thermistor installed as surface mount
component RT1. If the application requires direct thermal
contact to the cells, RT1 can be removed and replaced
with a leaded thermistor connected between the RT1+/
RT1- solder pads (J2 and J3).
Detailed Description of Hardware
Table 1. Communication Line Solder Points
COMMUNICATION LINE
SDA
SCL
GND
CONNECTION POINT
J11
J12
J13
The MAX17262X EV kit board provides a variety of fea-
tures that highlight the functionality of the IC. The follow-
ing sections detail the most important aspects of the EV
kit board.
J8
ALRT
J11
SDA
J12
SCL
J13
SYSGND
J5
Pack -
MAX17262X
PROTECTOR
CIRCUIT
J4
SYSGND
J1
RJ-11
PC
Figure 1. MAX17262 Board Connections
www.maximintegrated.com
+
-
CELL
CHARGER/LOAD
J7
SYSPWR
J6
Pack +
J3
RT1+
J2
RT1-
Maxim Integrated
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MAX17262X Evaluation Kit
Evaluates: MAX17262
Detailed Description of Software
The MAX17262X evaluation kit software gives the user
complete control of all functions of the MAX17262, as
well as the ability to load a custom model into the IC.
Separate control tabs allow the user access to view real-
time updates of all monitored parameters. The software
also incorporates a data-logging feature to monitor a cell
over time.
Panel.
After the installation is complete, open the Maxim
Integrated/MAX17262 folder and run MAX17262.exe or
select it from the program menu.
Figure 2
shows a splash
screen containing information about the evaluation kit that
appears while the program is loading.
Communication Port
Software Installation
The software requires Windows 7 or newer operating
system. .NET version 4.5 is required for operation and is
automatically installed if an older version of .NET frame-
work is detected. To install the evaluation software, exit
all programs currently running and unzip the provided
MAX17262 Installation Package zipped file.
Double click the MAX17262_Vx_x_x Install.exe icon and
the installation process begins. Follow the prompts to com-
plete the installation. The evaluation software can be unin-
stalled in the
Add/Remove
programs tool in the
Control
The EV kit software automatically finds the DS91230+
adapter when connected to any USB port. Communication
status is shown on the right-hand side of the bottom sta-
tus bar. See
Figure 3.
If the adapter cannot be found, a
“No USB Adapter” message is displayed. If the adapter is
found, but the IC daughter board cannot be found, a “No
Slave Device” message is displayed. Otherwise, if com-
munication is valid, a green bar updates as the software
continuously reads the IC registers.
If the DS91230+ is connected, the status bar should be
active. The bottom status bar also displays information on
data logging status, the communication mode, hibernation
status, device serial number, and the EV kit GUI version
number.
Figure 2. EV Kit Splash Screen
Figure 3. EV Kit Bottom Status Bar
www.maximintegrated.com
Maxim Integrated
│
3
MAX17262X Evaluation Kit
Evaluates: MAX17262
Program Tabs
All functions of the program are divided under four tabs
in the main program window. Click on the appropriate
tab to move to the desired function page. Located on
the
ModelGauge m5
tab is the primary user information
measured and calculated by the IC. The
Graphs
tab
visually displays fuel-gauge register changes over time.
The
Registers
tab allows the user to modify common
fuel-gauge registers one at a time. The
Configure
tab
allows for special operations such as initializing the fuel
gauge logging and performing fuel-gauge reset. All tabs
are described in more detail in the following sections.
the ModelGauge m5 tab. Information is grouped by func-
tion and each is detailed separately.
State-of-Charge
The
State-of-Charge
group box displays the main output
information from the fuel gauge: state-of-charge of the
cell, remaining capacity, time-to-full, and time-to-empty.
Cell Information
The
Cell Information
group box displays information
related to the health of the cell such as the cell’s age,
internal resistance, present capacity, number of equivalent
full cycles, and change in capacity from when it was new.
ModelGauge m5 Tab
The
ModelGauge m5
tab displays the important output
information read from the IC.
Figure 4
shows the format of
Measurements
The
Measurements
group box displays ADC measure-
ments that are used by the fuel gauge to determine state-
of-charge.
Figure 4. ModelGauge m5 Tab
www.maximintegrated.com
Maxim Integrated
│
4
MAX17262X Evaluation Kit
Evaluates: MAX17262
Alerts
The
Alerts
group box tracks all eleven possible alert
trigger conditions. If any alert occurs, the corresponding
checkbox is checked for the user to see. The
Clear
alerts
button resets all alert flags.
Graphs Tab
At Rate
The
At Rate
group box allows the user to input a hypo-
thetical load current and the fuel gauge calculates the
corresponding hypothetical Qresidual, TTE, AvSOC, and
AvCap values.
Figure 5
shows the format of the
Graphs
Tab. Graph
information is grouped into four categories: voltages,
temperatures, capacities, and currents. The user can
turn on or off any data series using the check boxes on
the right-hand side of the tab. The graph visible viewing
area can be adjusted from 10 minutes up to 1 week. The
graphs remember up to 1 week worth of data. If the view-
ing area is smaller than the time range of the data already
collected, the scroll bar below the graphs can be used to
scroll through graph history. All graph history information
is maintained by the program. Graph settings can be
changed at any time without losing data.
Figure 5. Graphs Tab
www.maximintegrated.com
Maxim Integrated
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