MAX17055 Evaluation Kit
Evaluates: MAX17055
General Description
The MAX17055G/MAX17055X evaluation kits (EV kits)
are fully assembled and tested surface-mount PCBs that
evaluate the stand-alone ModelGauge™ m5 host-side
fuel gauge ICs for lithium-ion (Li+) batteries in handheld
and portable equipment.
The MAX17055G/MAX17055X EV kits include the Maxim
DS91230+ USB interface, IC evaluation board, and
RJ-11 connection cable. Windows
®
based graphical
user interface (GUI) software is available for use with
the EV kit and can be downloaded from Maxim’s website
www.maximintegrated.com/evkitsoftware.
Windows 7
or newer Windows operating system is required to use the
EV kit GUI software.
Quick Start
Required Equipment
•
•
•
•
•
•
•
MAX17055G/MAX17055X EV kit
1-cell lithium-ion battery pack
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
Procedure
Features
●
ModelGauge m5 Algorithm
●
Monitors 1-Cell Lithium-Ion Battery Packs
●
Battery Pack Input Voltage Range of +2.3V to +4.9V
●
On-chip Temperature Measurement and External
Thermistor Measurement Network
●
Optional On-Board PCB Trace Sense Resistor
●
Windows 7 or Newer Compatible Software
●
Proven PCB Layout
●
Fully Assembled and Tested
The EV kits are fully assembled and tested. Follow the
steps below to install the EV kit software, make required
hardware connections, and start operation of the kits.
The EV kit software can 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. See the
Battery Selection
section for details.
1)
Visit
www.maximintegrated.com/evkitsoftware
to
download the latest version of the MAX17055K 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 MAX17055K_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 auto-
matically updates .NET framework as needed.
2)
MAX17055K EV Kit Files
FILE
MAX17055K_Vx_x_x_x_Install.exe
DECRIPTION
Installs all EV kit files
on your computer
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.
19-8760; Rev 0; 1/17
MAX17055 Evaluation Kit
Evaluates: MAX17055
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+ adapter 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 connect between the
SYSGND- and SYSPWR+ pads.
6)
Connect the RJ-11 cable between the USB adapter
and the EV kit board. The GUI software establishes
communication automatically.
At initial power-up, a battery profile must be created.
The battery selection window opens and allows the
user to generate a profile for the battery they are
using. They can either select EZ configuration or if a
custom .INI characterization file is available for the
battery it can be selected at this time. See the
Battery Selection
section for details.
4)
7)
5)
J6
ALRT1
J7
SDA
J8
SCL
J10
SYSGND
J4
PACK-
MAX17055G/MAX17055X
J9
RJ-11
DS91230+/PC
J2
RT1+
J3
RT1-
J1
PACK+
J5
SYSPWR
PROTECTOR
CIRCUIT
-
CELL
+
-
CHARGER/LOAD
+
Figure 1. MAX17055 Board Connections
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MAX17055 Evaluation Kit
Evaluates: MAX17055
Detailed Description of Hardware
The MAX17055 EV kit board provides a variety of features
that highlight the functionality of the IC. The following sec-
tions detail the most important aspects of the EV kit board.
0Ω jumpers must be resoldered to change the circuit.
Table 2
summarizes the changes. Note that the IC must
be reconfigured to support the new resistor type.
Communication Connections
Detailed Description of Software
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.
The MAX17055G/MAX17055X evaluation kit software
gives the user complete control of all functions of the
MAX17055, as well as the ability to load a custom model
into the ICs. 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.
Software Installation
External Thermistor
The MAX17055 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).
The software requires a 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
MAX17055K Installation Package zipped file.
Double click the MAX17055K_V_x_x_x_x Install.exe icon
and the installation process begins. Follow the prompts
to complete the installation. The evaluation software
can be uninstalled in the
Add/Remove
programs tool
in the
Control Panel.
After the installation is complete,
open the
Maxim Integrated/MAX17055K
folder and run
MAX17055K.exe
or select it from the program menu.
Figure 2
shows a splash screen containing information
about the evaluation kit that appears while program is
loading.
Sense Resistor Options
All EV kit boards are shipped with an 0805 size 0.010Ω
chip sense resistor installed. Oversized land pattern
pads allow for different size sense resistors to be used
if desired. Also, each board contains an optional 0.003Ω
copper trace sense resistor that can be enabled if desired.
To do so, the chip sense resistor must be removed and
Table 1. Communication Line
Solder Points
COMMUNICATION LINE
SDA
SCL
GND
CONNECTION POINT
J7
J8
J10
Table 2. Sense Resistor Selection
for MAX17055
COMPONENT
R3
R4
R5
R6
VALUE
FOR SMD
RESISTOR
SENSE
0Ω
Not populated
Desired sense
value
Not populated
VALUE FOR BOARD
TRACE SENSE
Not populated
0Ω
Not populated
0Ω (R7 is trace resistor)
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MAX17055 Evaluation Kit
Evaluates: MAX17055
Communication Port
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 EV kit board cannot be found, a “No Slave
Device” message is displayed. Otherwise, if communica-
tion is valid, a green bar updates as the software continu-
ously reads the IC registers.
If the DS91230+ is connected, the status bar should be
active. The bottom status bar also displays information
on hibernation status, IC serial number, selected current-
sense resistor value, selected battery profile, and IC’s
firmware revision.
Battery Selector
The MAX17055 must always have a battery profile for
the battery it is presently fuel gauging. The first time the
MAX17055K software is run, the
Battery Selector Form
opens automatically to allow the user to set up the first
profile. Afterwards, the user can launch the form either
from the
Configure
tab or the
Device
pull-down menu. A
new profile should be created for each individual battery
monitored by the IC. Care should also be taken to always
have the correct profile selected for the battery that is
attached to the IC so that the fuel gauge is accurate and
that save and restore information is properly maintained.
Battery profile files are stored under
My Documents/
Maxim Integrated/MAX17055/Batteries.
Custom .INI
files are also automatically copied by the program to this
location as well.
Figure 2. EV Kit Splash Screen
Figure 3. EV Kit Bottom Status Bar
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MAX17055 Evaluation Kit
Evaluates: MAX17055
Figure 4
shows the format of the Battery Selector Form.
To change known batteries, the user should select the
proper battery profile from the pull-down box and then
click
Save Profile and Update IC.
To create a profile for
a new battery, follow these steps:
1)
2)
3)
Select a new profile number from the
Battery Profile
pull-down box.
Give the profile a detailed description so that it can
easily be matched to its battery.
If no custom .INI file has been created, select the
Use
Default IC Settings (EZ Config)
option and fill out the
five settings for your application. Proceed to Step 5.
4)
5)
6)
If a custom .INI file has been provided by Maxim,
select
Load INI File
option and select the file.
Select to restore battery history data after model
load or not to.
Click
Save Profile and Update IC
to load the model
and exit the form.
If the user ever wishes to delete a battery profile, select
the profile number from the drop-down box and then click
Delete Profile
to remove it permanently.
Figure 4. Battery Selector Form
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