Texas Instruments bq34z100 User manual

User's Guide
SLUU904A–April 2012–Revised February 2015
bq34z100EVM Wide Range Impedance Track™ Enabled
Battery Fuel Gauge Solution
This evaluation module (EVM) is a complete evaluation system for the bq34z100 wide-range fuel gauge
for lithium ion, Nickel metal hydride (NiMH) and Nickel Cadmium (NiCd) chemistries when combined with
an EV2300 USB adapter and Microsoft®Windows®based PC software downloadable from the TI.com
website. The circuit module includes one bq34z100 integrated circuit (IC) and all other components
necessary to monitor and predict capacity in one or more series cell Li-ion, Li-polymer, or LiFePO4 battery
packs. The minimum series cell count for PbA, NiMH, and NiCd chemistries must exceed 3.3-V stack
voltage. The circuit module connects directly across the battery stack. With the EV2300 interface adapter
and software, it is possible to read the bq34z100 data registers, program the chip for different pack
configurations, log cycling data for further evaluation, and evaluate the overall functionality of the
bq34z100 solution under different charge and discharge conditions.
Contents
1 Features....................................................................................................................... 2
1.1 Kit Contents.......................................................................................................... 2
1.2 Ordering Information ............................................................................................... 2
1.3 Documentation ...................................................................................................... 2
1.4 bq34z100 Circuit Module Performance Specification Summary.............................................. 2
2 bq34z100 Quick Start Guide ............................................................................................... 3
2.1 Items Needed for EVM Setup and Evaluation .................................................................. 3
2.2 Software Installation................................................................................................ 3
2.3 EVM Connections................................................................................................... 4
3 Battery Management Studio................................................................................................ 6
3.1 Registers Screen.................................................................................................... 6
3.2 Setting Programmable bq34z100 Options....................................................................... 7
3.3 Calibration Screen.................................................................................................. 8
3.4 Chemistry Screen................................................................................................... 9
3.5 Programming Screen ............................................................................................. 10
3.6 Golden Image Screen ............................................................................................ 11
3.7 Advanced Comm I2C Screen.................................................................................... 12
3.8 Send HDQ Screen ................................................................................................ 14
3.9 Dashboard Panel.................................................................................................. 15
3.10 Commands Panel ................................................................................................. 15
4 Circuit Module Physical Layouts ......................................................................................... 16
4.1 Board Layout....................................................................................................... 16
4.2 Schematic .......................................................................................................... 19
4.3 Bill of Materials .................................................................................................... 20
5 Related Documentation from Texas Instruments ...................................................................... 20
List of Figures
1 bq34z100 Circuit Module Connection to Cells and System Load and Charger ..................................... 4
2 Registers Screen............................................................................................................. 6
3 Data Memory Screen........................................................................................................ 7
4 Calibration Screen........................................................................................................... 8
Impedance Track is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
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5 Chemistry Screen............................................................................................................ 9
6 Programming Screen ...................................................................................................... 10
7 Golden Image Screen ..................................................................................................... 11
8 Advanced Comm Screen.................................................................................................. 12
9 Send HDQ Screen ......................................................................................................... 14
10 Top Silk Screen............................................................................................................. 16
11 Top Assembly............................................................................................................... 16
12 Top Layer.................................................................................................................... 17
13 Internal Layer 1............................................................................................................. 17
14 Internal Layer 2............................................................................................................. 18
15 Bottom Layer................................................................................................................ 18
16 bq34z100EVM-003 Schematic ........................................................................................... 19
List of Tables
1 Ordering Information ........................................................................................................ 2
2 Bill of Materials ............................................................................................................. 20
1 Features
• Complete evaluation system for the bq34z100 advanced gas gauge with Impedance Track™
technology.
• Populated circuit module for quick setup
• Link to software allowing data logging for system analysis
1.1 Kit Contents
• bq34z100 circuit module
• Cable to connect the EVM to an EV2300 or EV2400 Communications Interface Adapter.
1.2 Ordering Information
Table 1. Ordering Information
EVM Part Number Chemistry Configuration Capacity
Li-Ion, Li-Polymer, LiFePO4, PbA,
bq34z100EVM 3 V–48 V Any
NiMH, NiCd
1.3 Documentation
See the device data sheet for bq34z100-G1 (SLUSBZ5)onwww.ti.com for information on device firmware
and hardware.
1.4 bq34z100 Circuit Module Performance Specification Summary
This section summarizes the performance specifications of the bq34z100 circuit module.
Specification Min Typ Max Unit
Input voltage BAT+ to BAT– in 1S mode 3 4 5 V
Input voltage BAT+ to BAT– in MultiCell 6 28 48 V
Charge and discharge current 0 2 7 A
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2 bq34z100 Quick Start Guide
This section provides the step-by-step procedures required to take a new EVM and configure it for
operation in a laboratory environment.
2.1 Items Needed for EVM Setup and Evaluation
• bq34z100 circuit module
• EV2300 or EV2400 Communications Interface Adapter
• Cable to connect the EVM to an EV2300 or EV2400 Communications Interface Adapter
• USB cable to the Communications Interface Adapter to the computer
• Computer setup with Windows XP, or higher, operating system
• Access to the internet to download the Battery Management Studio software setup program
• Battery cells or 1-kΩresistors to configure a cell simulator
• A DC power supply that can supply 50 V and 3 A (Constant current/constant voltage capability is
desirable)
2.2 Software Installation
Find the latest software version in the bq34z100 tool folder on www.ti.com. Use the following steps to
install the bq34z100-G1 Battery Management Studio software:
1. Download and run the Battery Management Studio setup program from the bqStudio product folder on
www.ti.com. See Section 3 for detailed information on using the tools in the Battery Management
Studio.
2. If the Communications Interface Adapter was not previously installed, after the Battery Management
Studio installation, a TI USB driver installer pops up. Click “Yes” for the agreement message and follow
the instructions. Two drivers are associated with the EV2300 and an additional file may be required for
the EV2400. Follow the instructions to install both. Do not reboot the computer, even if asked to do so.
3. Plug the Communications Interface Adapter into a USB port using the USB cable. The Windows
system may show a prompt that new hardware has been found. When asked, "Can Windows connect
to Windows Update to search for software?", select "No, not this time", and click "Next". In the next
dialog window, it indicates "This wizard helps you install software for: TI USB Firmware Updater".
Select "Install the software automatically (Recommended)" and click "Next". It is common for the next
screen to be the Confirm File Replace screen. Click "No" to continue. If this screen does not appear,
then go to the next step. After Windows indicates that the installation was finished, a similar dialog
window pops up to install the second driver. Proceed with the same installation preference as the first
one. The second driver is the TI USB bq80xx Driver.
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2.3 EVM Connections
This section covers the hardware connections for the EVM (see Figure 1).
Figure 1. bq34z100 Circuit Module Connection to Cells and System Load and Charger
• Direct connection to the cells: BAT–, BAT+
The bq34z100 monitors the cell stack voltage. Connect the bottom of the stack to BAT– and the top of
the stack to BAT+. The stack voltage can range from 3 V to 48 V (see Figure 1).
STACK VOLTAGE J5 HEADER J2 HEADER
Less than 5 V < 5-V jumpers N/A
Greater than 5 V > 5-V jumpers 16 V, 32 V or 48 V
WARNING
Applying a voltage greater than 5 V when jumpers are configured
to < 5-V operation will damage the IC. Do not apply power until you
have completed the EVM Connections section.
• To the serial communications port (SCL, SDA)
Attach the Communications Interface Adapter cable to the J7 terminal block and to an EV2300 or
EV2400 adapter box. Connect the PC USB cable to the EV2300 or EV2400 and the PC USB port (see
Figure 1).
• The charger and system load connection across BAT+ and PACK–
Attach the charger or load to the TB3 terminal block. Connect the positive load wire to BAT+ and the
ground wire for the load to PACK– (see Figure 1).
• The ALERT output
The ALERT output is an active low interrupt. The ALERT Configuration register selects the Control
Status bits that will activate the interrupt. The ALERT pin is an open drain output and a pull-up resistor
must be attached to the TB1 to use the feature.
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• The LED Configuration
When configuring the data flash registers, choose one of five LED/Comm configuration codes (refer to
Table 21 in the bq34z100-G1 datasheet SLUSBZ5). After reviewing those possibilities, select the
jumper pattern desired for the J6 header on the EVM. For single LED mode, place a jumper on the pair
marked A. For four direct LED mode, place jumpers on A, B, C, and D. (Note: This configuration is only
available when using HDQ communications mode.) For external LEDs using the shift register option,
place a single jumper on EXT. In all cases, where one or more LED’s are used, place a jumper across
the J1 header to provide power to the LED (see Figure 1).
• Parameter setup
The default data flash settings configure the device for 1-series Li-Ion cell. The user must update the
data to set up the number of series cells to match the physical pack configuration (see Cell
Configuration in Section 3.2). This provides basic functionality to the setup. Other data flash
parameters should also be updated to fine tune the gauge to the pack. See the bq34z100 datasheet
for help with setting the parameters.
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3 Battery Management Studio
3.1 Registers Screen
Apply power to the EVM after you have completed the EVM Connections section. Run Battery
Management Studio from the Start | Programs | Texas Instruments | Battery Management Studio menu
sequence, or the Battery Management Studio shortcut. The Registers screen (see Figure 2) appears. The
Registers section contains parameters used to monitor gauging. The Bit Registers section provides a bit-
level picture of status and fault registers. A green flag indicates that the bit is 0 (low state) and a red flag
indicates that the bit is 1 (high state). Data begins to appear once the Refresh (single-time scan) button is
selected, or it scans continuously, if the Scan button is selected.
Figure 2. Registers Screen
The continuous scanning period can be set via the | Window | Preferences | SBS | Scan Interval | menu
selection.
The Battery Management Studio program provides a logging function which logs the values selected by
the Log check boxes located beside each parameter in the Registers section. To enable this function,
select the Log button; this causes the Scan button to be selected. When logging is stopped, the Scan
button is still selected and has to be manually deselected.
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3.2 Setting Programmable bq34z100 Options
The bq34z100 data flash comes configured per the default settings detailed in the bq34z100 datasheet.
Ensure that the settings are correctly changed to match the pack and application for the solution being
evaluated.
NOTE: The correct setting of these options is essential to get the best performance. The settings
can be configured using the Data Memory screen (see Figure 3)
Figure 3. Data Memory Screen
3.2.1 Cell Configuration
The bq34z100 operates in one of two modes for measuring battery voltage. Place two jumpers on header
J5 to select the mode of operation. Refer to the Section 2.3.
For packs where the stack voltage is less than 5 V:
• Set the Number of Series Cells parameter field to the appropriate value
• Reset the gauge using the RESET button on the Commands panel
• Calibrate the stack voltage. Reference the Calibration Screen section
For packs where the stack voltage is less than 5 V:
• Set the Number of Series Cells parameter field to the appropriate value
• Set the VOLTSEL bit in the Pack Cfg A register
• Reset the gauge using the RESET button on the Commands panel
• Calibrate the stack voltage. Reference the Calibration Screensection
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3.3 Calibration Screen
Calibrate the voltages, temperatures, and currents to provide good gauging performance. Press the
Calibration button to select the Advanced Calibration window. See Figure 4.
Figure 4. Calibration Screen
3.3.1 Voltage Calibration
• Measure the voltage from BAT+ to BAT– and enter this value in the Applied Voltage field and select
the Calibrate Voltage box.
• Press the Calibrate Gas Gauge button to calibrate the voltage measurement system.
• Deselect the Calibrate Voltage boxes after voltage calibration has completed.
3.3.2 Temperature Calibration
• Enter the room temperature in the Applied Temperature field and select the Calibrate Temperature box
and select the thermistor to be calibrated. The temperature value must be entered in degrees Celsius.
• Press the Calibrate Gas Gauge button to calibrate the temperature measurement system.
• Deselect the Calibrate Temperature box after temperature calibration has completed.
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3.3.3 Current Calibration
• Select the Calibrate CC Offset and Calibrate Board Offset boxes and insure that there is no current
flow.
• Press the Calibrate Gas Gauge button to calibrate.
• Deselect the Calibrate CC Offset and Calibrate Board Offset boxes after current calibration has
completed.
• Connect and measure a 2-A load from BAT+ and PACK– to calibrate the current gain.
• Enter –2000 in the Applied Current field and select the Calibrate Current box.
• Press the Calibrate Gas Gauge button to calibrate.
• Deselect the Calibrate Current box after current calibration has completed.
3.4 Chemistry Screen
The chemistry file contains parameters that the simulations use to model the cell and its operating profile.
It is critical to program a Chemistry ID that matches the cell into the device. Some of these parameters
can be viewed in the Data Flash section of the Battery Management Studio.
Press the Chemistry button to select the Chemistry window. See Figure 5.
Figure 5. Chemistry Screen
• The table can be sorted by clicking the desired column. For example: Click the Chemistry ID column
header.
• Select the ChemID that matches your cell from the table (Figure 5).
• Press the Update chemistry in the data flash button to update the chemistry in the device.
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3.5 Programming Screen
Press the Programming button to select the Programming Update window. This window allows the user to
program the device to a new version of firmware.
Figure 6. Programming Screen
3.5.1 Programming the Flash Memory
The upper section of the Programming screen is used to initialize the device by loading the default .srec
into the flash memory (see Figure 6).
• Search for the .srec file using the Browse button.
• Press the Program button and wait for the download to complete.
• Press the Execute FW button after the download has completed.
• Select File | Restart to initialize bqStudio to the new firmware.
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3.6 Golden Image Screen
Press the Golden Image button to select the Golden Image window. This window allows the user to export
the device firmware as an .srec, .bq.fs, and .df.fs files.
Figure 7. Golden Image Screen
3.6.1 Exporting the Flash Memory
The .srec file contains the full flash memory. The .bq.fs contains the program memory portion for the flash
memory and the .df.fs contains the data flash portion of the flash memory (see Figure 7).
• Select the directory location to export the files.
• Enter the file name for the files.
• Select the files types to export.
• Press the Create Image File button to export the memory and create the files.
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3.7 Advanced Comm I2C Screen
Press the Advanced Comm I2C button to select the Advanced I2C Comm window. This tool provides
access to parameters using I2C and Manufacturing Access commands (see Figure 8).
Figure 8. Advanced Comm Screen
3.7.1 Examples
Reading Standard Data Commands.
• Read SBData Voltage (0x08)
– Start Register = 0x08
– Number of Bytes to Read = 2
– Press the Read button
– Date returned =8C 3C, which a byte swapped
– 0x3C8C = 15500mV, when converted to decimal
Sending a MAC Gauging() to enable IT via ManufacturerAccess().
• With Impedance Track™ disabled, send Gauging() (0x0021) to ManufacturerAccess().
– Start Register = 0x00
– Bytes to Write = 21 00
– Press the Write button
– The QEN flag should set in the Control Status register to indicate that Impedance Track is enabled
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Reading Control Subcommands. Chemical ID() (0x0008) via ManufacturerAccess()
• Send Chemical ID() to ManufacturerAccess()
– Start Register = 0x00
– Bytes to Write = 08 00
– Press the Write button
– Start Register = 0x00
– Number of Bytes to Read = 2
– Press the Read button
– Date returned =07 01, which a byte swapped
– That is 0x0107, chem ID 107
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3.8 Send HDQ Screen
When using the HDQ single wire serial communication feature, the mode of the gauge must be changed
with a special command. This screen provides a button for this purpose. Note the warning message. The
process is not reversible. Once in HDQ mode, the HDQ pro screen is available for testing commands and
reprogramming the device. For register scanning and data flash access, use the companion evaluation
program for HDQ (see Figure 9).
Figure 9. Send HDQ Screen
• To the HDQ communications port (HDQ, GND)
– Attach the Communications Interface Adapter cable to the J7 terminal block (I2C Interface) to the
I2C port on the EV2300..
– Press the Convert From I2C to HDQ button
– Power cycle the voltage to the device
– Attach the Communications Interface Adapter cable to the J4 terminal block (HDQ Interface) to the
HDQ port on the EV2300
– Select File | Restart to reload the bqStudio program
WARNING
The conversion to HDQ mode is permanent. TI recommends using
the I2C interface to setup, calibrate, and run the optimization cycle.
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3.9 Dashboard Panel
The Dashboard panel displays the device type and firmware version. It also provides updates to the
Voltage, SOC, Current and Temperature in one location. The Dashboard uses automatic polling, which
can cause problems when sending some MAC commands. Dashboard polling can be disabled by clicking
the auto refresh field at the top of the panel (see Figure 2).
3.10 Commands Panel
The Commands panel provides a quick and easy access to frequently used I2C and MAC commands.
They are mapped to buttons that can be pressed to execute the function. The I2C transaction is logged in
the Log Panel (see Figure 2).
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1
11
11
1
1
J1
R2
R25
J3
TB1
R30
D7
TP1
TP2
Q6 J2
R15
R4
R36
SW1
U1
R7
C1 Q5
Q3
D2
R3
U3
Q2
R5 C5
C6
R8
C7
D1
R6
D16
RT1
R35
R34
D13
R37
R9 J7
R13
R14
D3
D4
J4
R16
R17
D5 TB3
R1
R10
R19 Q1
R11
D12
R12
D14
R18
D15
R20
D8
R22 R23
R24
J6
C3
C4
R26
R27
TP3
TP4
TP8
TP7
TP6
TP5
C2
C8
Q7
C9
Q4
R21
J5
R29
R31
R32
R33
R28
D6 D17 D10 D9
D11
U2
J1
J3
TB1
J2
SW1
U1 U3
RT1
J7 J4
TB3
J6
TP3
TP4
TP8
TP7
TP6
TP5
J5 U2
Circuit Module Physical Layouts www.ti.com
4 Circuit Module Physical Layouts
This section contains the printed-circuit board (PCB) layout, assembly drawings, and schematic for the
bq34z100 circuit module.
4.1 Board Layout
This section shows the dimensions, PCB layers (Figure 10 through Figure 15), and assembly drawing for
the bq34z100 module.
Figure 10. Top Silk Screen
Figure 11. Top Assembly
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Figure 12. Top Layer
Figure 13. Internal Layer 1
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Figure 14. Internal Layer 2
Figure 15. Bottom Layer
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<= 5 V
SCL
BAT -
BAT +
PACK -
SDA
GND
HDQ
GND
> 5 V
<= 5 V
ALERT
LED Display
LED CONFIGURATION OPTIONS
GND
16V
32V
48V
LED0
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
LED A LED B LED C LED D
ALERT CONFIGURATION
Open for I2C
Fiducial Marks
> 5 V
A B C D
D
C
B
A
EXT
Optional for additional power saving
Adjust for minimum current consumption in the application
I2C pullups normally implemented in the host. Duplicated here since EV2300 does not provide
1
1
1
1
2
2
3
3
4
4
Optimize for required LED power dissipation
R2
100K
SH1
R3 27K
D1
AZ23C5V6-7
R36
100
R35
100
R34
100
R37
100
1
2
3
4
J7
D2
AZ23C5V6-7
R13
100
R14
100
1
2
3
4
J4
Q1
2SK3019
Q2
2SK3019
1
2
3
TB3
R30
.010 75ppm
Q5
BSS84
Q3 2N7002
C5 0.1uF
C6 0.1uF
C7
0.1uF
D7 BZT52C5V6S-7
TP1
Vscale Hi
TP2
Vscale Lo
R4
165K
SW1
RT1
10K
1
2
3
4
5
6
7
8
J5
1
2
J1
1
2
3
4
5
6
7
8
J3
1
2
3
TB1
R7
2M
1A
2B
3QA
4QB
5QC
6QD
7GND 8
CLK
9
~CLR
10
QE
11
QF
12
QG
13
QH
14
VCC
U1
SN74HC164PW
1A
2B
3QA
4QB
5QC
6QD
7GND 8
CLK
9
~CLR
10
QE
11
QF
12
QG
13
QH
14
VCC
U3
SN74HC164PW
D16 QTLP610C-4 GRN
R8 1.5K
D13 QTLP610C-3 YEL
D9 QTLP610C-7 RED
D10 QTLP610C-7 RED
D11 QTLP610C-7 RED
D12 QTLP610C-3 YEL
R9 1.5K
R10 1.5K
R11 1.5K
R12 1.5K
D14 QTLP610C-3 YEL R18 1.5K
D15 QTLP610C-4 GRN R20 1.5K
R22 1.5K
D17 QTLP610C-4 GRN R23 1.5K
R24 1.5K
C3 0.1uF
C4 0.1uF
D8
QTLP610C-4 GRN
D3
QTLP610C-4 GRN
D4
QTLP610C-4 GRN
D5
QTLP610C-4 GRN
Q6
2SK3019
1
2
3
4
5
6
7
8
9
10
J6
R25
200
1
2
3
4
5
6
J2
TP3
TP4
TP8
TP7
TP6
TP5
R15
1.5K
R16
1.5K
R17
1.5K
R19
1.5K
R5 100
R6 100
R1
300K .1%
R26
300K .1%
R27
300K .1%
SH2
Q7
2SK3019
R21
220K
Q4
BSS138
C8 1uF
C2
0.1uF
C1
1uF
C9 3300 pF
R28 16.5K .1%
R29
10k
R31
10k
R32
1M
R33
1M
D6 QTLP610C-4 GRN
1P2
2VEN
3P1
4BAT
5CE
6REGIN
7REG25 8
VSS
9
SRP
10
SRN
11
P6/TS
12
P5/HDQ
13
P4/SCL
14
P3/SDA
U2
BQ34Z1X0 PW
R38
1k
Q8
2N7002
R39
47
R40
47
R41 27K
GND
GND
GND
GND
GND
P3 P4
REGIN
REGIN
GND
GND
P2
GND
GND
GND
GND
P2
P1
GND GND
P4
P3
P2
P1
REGIN
AGND
REG25
GND AGND
REG25
GND
GND
AGND
AGND
REGIN
GND GND
P1
P2
AGND
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4.2 Schematic
Figure 16 shows the schematic for this EVM.
Figure 16. bq34z100EVM-003 Schematic
19
SLUU904A–April 2012–Revised February 2015 bq34z100EVM Wide Range Impedance Track™ Enabled Battery Fuel Gauge
Solution
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4.3 Bill of Materials
Table 2 lists the bill of materials (BOM) for this EVM.
Table 2. Bill of Materials
Count RefDes Value Description Size Part Number MFR
2 C1, C8 1 µF Capacitor, ceramic, 6.3 V, X7R, 20% 0603 Std Any
6 C2–C7 0.1 µF Capacitor, ceramic, 50 V, X7R, 20% 0603 Std Any
1 C9 3300 pF Capacitor, ceramic, 50 V, X7R, 20% 0603 Std Any
2 D1, D2 AZ23C5V6-7 Diode, dual, Zener, 5.6 V, 300 mW SOT23 AZ23C5V6-7 Diodes
3 D12–D14 QTLP610C-3 YEL Diode, LED yellow, 30 mA 0.126 × 0.087 in QTLP610C-3 Fairchild
8 D3–D6, D8, D15–D17 QTLP610C-4 GRN Diode, LED green, 30 mA 0.126 × 0.087 in QTLP610C-4 Fairchild
1 D7 BZT52C5V6S-7 Diode, Zener, 200 mW, 5.6 V SOD-323 BZT52C5V6S-7 Diodes Inc
3 D9–D11 QTLP610C-7 RED Diode, LED red, 30 mA 0.126 × 0.087 in QTLP610C-7 Fairchild
1 J1 PEC02SAAN Header, male 2-pin, 100 mil spacing, 0.100 in × 2 PEC02SAAN Sullins
1 J2 PEC03DAAN Header, male 2 × 3-pin, 100 mil spacing 0.20 in × 0.30 PEC03DAAN Sullins
1 J3 PEC04DAAN Header, male 2 × 4-pin, 100 mil spacing 0.20 × 0.40 in PEC04DAAN Sullins
2 J4, J7 22-05-3041 Header, friction lock assembly, 4-pin right angle 0.400 × 0.500 22-05-3041 Molex
1 J5 PEC08SAAN Header, male 8-pin, 100 mil spacing, 0.100 in × 8 PEC08SAAN Sullins
1 J6 PEC05DAAN Header, male 2 × 5-pin, 100 mil spacing 0.100 in × 5 × 2 PEC05DAAN Sullins
4 Q1, Q2, Q6, Q7 2SK3019 MOSFET, N ch, 30V, 100 mA, 8 ΩSC-75A 2SK3019 Rohm
2 Q3, Q8 2N7002 MOSFET, N ch, 60 V, 115 mA, 1.2 ΩSOT23 2N7000-7-F Diodes Inc
1 Q4 BSS138 MOSFET, N ch, 50 V, 0.22 A, 3.5 ΩSOT23 BSS138 Fairchild
1 Q5 BSS84 MOSFET, P ch, 50 V, 130mA, 10 ΩSOT23 BSS84 Fairchild
3 R1, R26, R27 300 kΩResistor, chip, 0.1W, 0.1%, ±25 ppm/C° 0603 RG1608P-304-B-T5 SSM
1 R2 100 kΩResistor, chip, 1/16W, 1% 0402 Std Std
2 R3, R41 27 kΩResistor, chip, 1/16-W, 5% 0402 Std Std
1 R21 220 kΩResistor, chip, 1/16W, 5% 0402 Std Std
1 R25 200 ΩResistor, chip, 1/16W, 5% 0603 Std Any
1 R28 16.5 kΩResistor, chip, 0.1W, 0.1%, ±25 ppm/C° 0603 RG1608P-1652-B-T5 SSM
2 R29, R31 10 kΩResistor, chip, 1/16W, 5% 0402 Std Std
1 R30 .010 ΩResistor, chip, 1/2W, 1%, ±75 ppm/C° 2010 WSL2010R0100FEA Dale
2 R32, R33 1 MΩResistor, chip, 1/16W, 5% 0402 Std Std
1 R4 165 kΩResistor, chip, 1/16W, 1% 0402 Std Std
8 R5, R6, R13, R14, 100 ΩResistor, chip, 1/16W, 5% 0603 STD Any
R34–R37
1 R7 2 MΩResistor, chip, 1/16W, 5% 0402 Std Std
14 R8–R12, R15–R20, 1 kΩResistor, chip, 1/16W, 5% 0402 Std Std
R22–R24
1 RT1 10 kΩThermistor, NTC, 3 A 0.095 × 0.150 in 103AT-2 Semitec
1 SW1 EVQ-PLHA15 Switch, push button, momentary, N.O. low profile 0.200 × 0.200 in EVQ-PLHA15 Panasonic
2 TB1, TB3 ED555/3DS Terminal block, 3 pin, 6 A, 3.5 mm 0.41 × 0.25 in ED555/3DS OST
1 TP1 Vscale Hi Test point, black, thru hole color keyed 0.100 × 0.100 in 5001 Keystone
1 TP2 Vscale Lo Test point, black, thru hole color keyed 0.100 × 0.100 in 5001 Keystone
0 TP3–TP8 STD Test point, 0.020 Hole STD STD
2 U1, U3 SN74HC164PW IC, 8-Bit Parallel-Out Serial Shift Registers TSSOP-14 SN74HC164PW TI
1 U2 BQ34100PW-G1 IC, Gas gauge TSSOP BQ34Z100PW-G1
1 – PCB, 68 mm × 50 mm × 1 mm PWR111 Any
5 Related Documentation from Texas Instruments
For related documentation, contact the TI field representative.
1. bq34z100-G1 Wide Range Fuel Gauge with Impedance Track™ Technology datasheet, SLUSBZ5
20 bq34z100EVM Wide Range Impedance Track™ Enabled Battery Fuel Gauge SLUU904A–April 2012–Revised February 2015
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