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Operation

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10

SLUUAP4A – December 2013 – Revised July 2016

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Copyright © 2013–2016, Texas Instruments Incorporated

bq27441 EVM: System-Side Impedance Track™ Technology

7

Operation

This section details the operation of the bqStudio software.

7.1

Starting the Program

Run bqStudio from the Start | All Programs | Texas Instruments | Battery Management Studio. The main
screen (

Figure 8

appears. If instead of

Figure 8

appearing,

Figure 9

appears, it may mean that the EVM

is not connected to the computer correctly. Make sure that the USB interface (EV2300 or EV2400 or GDK)
and the bq27441 are connected and restart bqStudio. If this still does not resolve the issue, check if the
I2C pullup resistors are connected. Data begins to appear once the <Refresh> (single-time scan) button is
clicked, or when the Scan button is clicked. To disable the scan feature, simply click the

Scan

button

again.

The continuous scanning period can be set by opening Window | Preferences

Registers section. The

range for this interval is 0 ms to 65,535 ms. Only items that are selected for scanning are scanned within
this period.

Battery Management Studio provides a logging function which logs the values that were last scanned. To
enable this function, select the Start Log button; this causes the Scan button to be pressed. When logging
is Stopped, the Scan button will still be selected and has to be manually clicked again.

Figure 8. Registers Screen

This screen (

Figure 8

shows the RAM data in the bq27441 device. Additional Flags and Status data can

be viewed at the bottom of the

Registers

screen.

Summary of Contents for bq27441 EVM

Page 1: ...the user can Read the bq27441 data registers Update the RAM for different configurations Log cycling data for further evaluation Evaluate the overall functionality of the bq27441 solution under diffe...

Page 2: ...ogy Populated circuit module for quick setup Personal computer PC software and interface board for easy evaluation Software that allows data logging for system analysis 1 1 Kit Contents bq27441 circui...

Page 3: ...ule provide the following connections Direct connection to the battery pack J5 PACK PACK To the serial communications port J10 SDA SCL and VSS The system load and charger connect across charger and lo...

Page 4: ...Side Impedance Track Technology 3 Circuit Module Physical Layout Bill of Materials and Schematic This section contains the board layout bill of materials and schematic for the bq27441 circuit module...

Page 5: ...Schematic 5 SLUUAP4A December 2013 Revised July 2016 Submit Documentation Feedback Copyright 2013 2016 Texas Instruments Incorporated bq27441 EVM System Side Impedance Track Technology Figure 3 bq2744...

Page 6: ...3DS Terminal Block 3 pin 6 A 3 5mm 0 41 x 0 25 inch ED555 3DS OST 1 J10 22 05 3041 Header Friction Lock Ass y 4 pin Right Angle 0 400 x 0 500 22 05 3041 Molex 1 J11 PEC02SAAN Header Male 2 pin 100mil...

Page 7: ...d bq27441 EVM System Side Impedance Track Technology 3 3 Schematic Figure 6 bq27441EVM Schematic 3 4 bq27441 Circuits Module Performance Specification Summary This section summarizes the performance s...

Page 8: ...dio 1 Ensure that the EV2300 is not connected to the PC through a USB cable before starting this procedure 2 Select the Tool and Software tab in the product folder 3 Under the Software section click o...

Page 9: ...onnecting the bq27441 Circuit Module to a Battery Pack Figure 7 shows how to connect the bq27441 circuit module to the cells and system load charger Figure 7 bq27441 Circuit Module Connection to Pack...

Page 10: ...the I2C pullup resistors are connected Data begins to appear once the Refresh single time scan button is clicked or when the Scan button is clicked To disable the scan feature simply click the Scan bu...

Page 11: ...Setting Programmable bq27441 Options The bq27441 data memory comes configured per the default settings detailed in the bq27441 data sheet see SLUSBH1 Ensure that the settings are correctly changed to...

Page 12: ...w pops up that provides details on the selected parameter Next enter the value in the value textbox and press Enter After pressing Enter bqStudio updates the selected parameter The Import button in th...

Page 13: ...ed see Figure 11 2 Enter the measured values for the types selected 3 Press the button to calibrate 8 2 Voltage Calibration Voltage calibration usually is not required If needed follow these steps 1 M...

Page 14: ...ght 2013 2016 Texas Instruments Incorporated bq27441 EVM System Side Impedance Track Technology 9 Advanced Communication I2 C 9 1 I 2 C Communication I2 C read write operations are not specific to any...

Page 15: ...2013 Revised July 2016 Submit Documentation Feedback Copyright 2013 2016 Texas Instruments Incorporated bq27441 EVM System Side Impedance Track Technology Figure 13 Parameter Q A Screen Figure 14 Gold...

Page 16: ...obtained through the TI Web site at www ti com 1 bq27441 G1 System Side Impedance Track Fuel Gauge data sheet SLUSBH1 2 bq27441 G1 System Side Impedance Track Fuel Gauge Technical Reference Manual SLU...

Page 17: ...ing the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repa...

Page 18: ...transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indic...

Page 19: ...ified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors current sens...

Page 20: ...REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE L...

Page 21: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

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