Table of Contents
Advertisement
Quick Links
bq27742EVM Single-Cell Impedance Track™ Technology
Evaluation Module
This evaluation module (EVM) is a complete evaluation system for the bq27742-G1 fuel gauge. The EVM
includes one bq27742 circuit module, a current sense resistor, two thermistors, and two protection N-
FETs. An EV2400 PC interface board and a PC USB cable are required for fuel gauge interface, but must
be ordered separately. The circuit module includes one bq27742 integrated circuit and all other onboard
components necessary to monitor and predict capacity for a pack-side fuel gauge solution and to perform
the protection. The circuit module connects directly across the battery cell. With the EV2400 interface
board and software, the user can read the bq27742 data registers, program the chipset for different pack
configurations, log cycling data for further evaluation, and evaluate the overall functionality of the bq27742
solution under different charge and discharge conditions. The latest Windows™-based PC software can
be downloaded from the product folder on the Texas Instruments Web site.
.......................................................................................................................
1
2
3
4
5
6
....................................................................................................................
7
8
9
10
11
12
1
2
.....................................................................................................................
3
4
.....................................................................................................................
5
6
7
8
9
10
Firmware Screen
1
2
3
4
5
SLUUAX8 - March 2014
Submit Documentation Feedback
............................................................................................
......................................................................................
.......................................................................................................
............................................................................................................
...........................................................................................................
.........................................................................................................
............................................................................................................
.........................................................................................
................................................................................................................
.................................................................................................................
.....................................................................................
.......................................................................................................
..........................................................................................................
...........................................................................................................
........................................................................................................
...............................................................................................................
.....................................................................................
Copyright © 2014, Texas Instruments Incorporated
Contents
...................................................
..............................................................................
.....................................................................
List of Tables
...........................................................................
2
........................................................................
User's Guide
SLUUAX8 - March 2014
.............................................
2
2
3
8
8
9
11
14
16
17
17
17
3
4
4
4
7
9
11
12
14
16
2
5
8
10
10
1
Advertisement
Table of Contents
Related Manuals for Texas Instruments bq27742EVM
Summary of Contents for Texas Instruments bq27742EVM
-
Page 1: Table Of Contents
The latest Windows™-based PC software can be downloaded from the product folder on the Texas Instruments Web site. Contents ........................ -
Page 2: Features
• The system load and charger connect across charger and load (TB2 or TP9/TP10): PACK–/LOAD– and PACK+/LOAD+. Impedance Track is a trademark of Texas Instruments. Windows is a trademark of Microsoft Corporation. Microsoft is a registered trademark of Microsoft Corporation. -
Page 3: Circuit Module Physical Layouts, Bill Of Materials, And Schematic
INT. 1.8V Pull up TEMP CELL+ TP11 REG25 VPWR THERM TP10 PACK-/ CELL- LOAD- BYPASS PACK-/ Figure 1. bq27742EVM Layout, Silk Screen SLUUAX8 – March 2014 bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 4: Top Assembly
Circuit Module Physical Layouts, Bill of Materials, and Schematic www.ti.com Figure 2. Top Assembly Figure 3. Top Layer Figure 4. Bottom Layer bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module SLUUAX8 – March 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 5: Bill Of Materials
TP6, TP9 Color Keyed 0.100 inch bq27742YZFR-G1 IC, Single Cell Li-Ion Pack BGA-15 bq27742YZFR-G1 Side Fuel Gauge with Integrated Protection PWR231 SLUUAX8 – March 2014 bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... - Page 6 (3) These assemblies must comply with workmanship standards IPC-A-610 Class 2. (4) Reference designators marked with an asterisk ('**') cannot be substituted. All other components can be substituted with equivalent manufacturer's components. bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module SLUUAX8 – March 2014 Submit Documentation Feedback...
-
Page 7: Schematic
Circuit Module Physical Layouts, Bill of Materials, and Schematic www.ti.com Figure 5. Schematic SLUUAX8 – March 2014 bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 8: Evm Hardware And Software Setup
EV2400 interface board. The EV2400 interface board has built-in I C pullups while the EV2300 interface board does not. Jumpers J7 and J9 can be removed from the bq27742EVM if the EV2400 interface board is used. Software Installation Find the latest software version in the bq27742 tool folder on power.ti.com. -
Page 9: Hardware Connection
Hardware Connection www.ti.com Hardware Connection Use of the bq27742EVM-001 requires three hardware components: • bq27742 circuit module • EV2300 or EV2400 PC interface board • Windows PC Connecting the bq27742 Circuit Module to a Battery Cell Figure 6 shows how to connect the bq27742 circuit module to the cell and system load/charger. -
Page 10: Circuit Module To Ev2300 Connections - I 2 C
CELL+ and PACK+. After wake-up, the charger can be removed. 3. Connect the PC USB cable to the EV2300 interface board and the PC USB port. The bq27742EVM is now set up for operation. bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module SLUUAX8 –... -
Page 11: Operation
This section details the operation of the Battery Management Studio software. Starting the Program Run Battery Management Studio from the Start → Programs → Texas Instruments → Battery Management Studio menu sequence. The main Battery Management Studio window (see Figure appears. -
Page 12: Datamemory Screen
DataMemory window seen in the main Battery Management Studio window (see Figure Figure 8. DataMemory Screen bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module SLUUAX8 – March 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... - Page 13 The module calibration data is also stored in the bq27742 data flash. SLUUAX8 – March 2014 bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...
-
Page 14: Calibrate Screen
Coulomb Counter Offset Calibration This performs the internal calibration of the coulomb counter input offset. Check the Calibrate CC Offset field and press the Calibrate Gas Gauge button. bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module SLUUAX8 – March 2014 Submit Documentation Feedback... - Page 15 • Check the Calibrate Current field • Press the “Calibrate” button. • Disconnect or stop the load current after calibration. SLUUAX8 – March 2014 bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...
-
Page 16: Firmware Screen
Firmware screen is used to save or program a complete flash image from or to the gauge. This is done using a .senc file, which contains the instruction flash image (firmware) and the data flash image (see Figure 10). The bq27742EVM may or may not be shipped with the latest firmware version (currently bq27742-G1 v1.03). Figure 10. Firmware Screen bq27742EVM Single-Cell Impedance Track™... -
Page 17: Send Hdq Screen
EVSW. Related Documentation From Texas Instruments To obtain a copy of any of the following TI documents, call the Texas Instruments Literature Response Center at (800) 477-8924 or the Product Information Center (PIC) at (972) 644-5580. When ordering, identify this document by its title and literature number. Updated documents also can be obtained through the TI Web site at www.ti.com. - Page 18 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 19 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
- Page 20 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ27742EVM...