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SDA

SCL

VSS

GPOUT

VSS

Pack+

Pack-

BIN

Load+(Host)

Charger-

SDA

SCL

Pack+

BAT

Pack-

Load+

Load-

GND

Optional

Optional

EXT
VSS

EXT

EXT

EXT

EXT

VDD

VDD

VDD

Load-(Host)

BIN

Ext VDD

VDD

GPOUT

Application circuit only needs to include bq27421 and C1

Optional

A1

GPOUT

B1

BIN

C1

VSS

A2

SDA

B2

VSS

C2

SRX

A3

SCL

B3

VDD

C3

BAT

U1

BQ27421YZF

BQ27421YZF

C1

0.47uF

C2

1uF

R3

5.1k

R4

5.1k

1

2

3

4

J10

1

2

3

J5

1

2

J1

TP2

TP5

TP3

TP9

TP4

TP6

TP11

TP12

TP10

TP7

TP1

R1

4.7k

1

2

3

J2

1

2

3

J3

1

2

3

J8

1

2

3

J9

1

2

J4

R2
10 k

1

2

J6

1

2

J7

TP8

SDA

SCL

SCL

SDA

VDD

VDD

VDD

EXT_VCC

EXT_VCC

VDD

EXT_VCC

EXT_VCC

www.ti.com

Circuit Module Physical Layout, Bill of Materials and Schematic

7

SLUUA63A – April 2013 – Revised July 2016

Submit Documentation Feedback

Copyright © 2013–2016, Texas Instruments Incorporated

bq27421 EVM: Single-Cell Impedance Track Technology

3.2

Bill of Material

Table 2. Bill of Materials

Count

RefDes

Value

Description

Size

Part Number

Mfr

1

C1

0.47uF

Capacitor, Ceramic, 10V, X5R, 10%

0402

1

C2

1uF

Capacitor, Ceramic, 6.3V, X5R, 10%

0402

4

J1, J4, J6,
J7

ED555/2DS

Terminal Block, 2-pin, 6-A, 3.5mm

0.27 x 0.25 inch

ED555/2DS

OST

4

J2, J3, J8,
J9

PEC36SAAN

Header, Male 3-pin, 100mil spacing

0.100 inch x 3

PEC36SAAN

Sullins

1

J5

ED555/3DS

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

R1

14.7k

Resistor, Chip, 1/16-W, 5%

0402

Std

Std

1

R2

10k

Resistor, Chip, 1/16-W, 5%

0402

Std

Std

2

R3, R4

5.1k

Resistor, Chip, 1/16-W, 5%

0402

Std

Std

4

TP1, TP7,
TP9

5001

Test Point, Black, Thru Hole Color Keyed

0.100 x 0.100 inch

5001

Keystone

7

TP2, TP3,
TP11, TP12

5002

Test Point, White, Thru Hole Color Keyed

0.100 x 0.100 inch

5002

Keystone

3

TP4, TP5,
TP6, TP10

5000

Test Point, Red, Thru Hole Color Keyed

0.100 x 0.100 inch

5000

Keystone

1

U1

bq27421YZF-G1x

IC, Battery Monitor and Data Logger

DSBGA

bq27421-G1x

TI

3.3

Schematic

Figure 6. bq27421EVM Schematic

Содержание bq27421 EVM

Страница 1: ...tware the user can Read the bq27421 data registers Update the RAM for different configurations Log cycling data for further evaluation Evaluate the overall functionality of the bq27421 solution under...

Страница 2: ...res Complete evaluation system for the bq27421 gas gauge with Impedance Track technology Populated circuit module for quick setup Personal computer PC software and interface board for easy evaluation...

Страница 3: ...circuit module 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 cha...

Страница 4: ...Cell 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 bq27421 circuit module 3...

Страница 5: ...d Schematic 5 SLUUA63A April 2013 Revised July 2016 Submit Documentation Feedback Copyright 2013 2016 Texas Instruments Incorporated bq27421 EVM Single Cell Impedance Track Technology Figure 3 bq27421...

Страница 6: ...rials and Schematic www ti com 6 SLUUA63A April 2013 Revised July 2016 Submit Documentation Feedback Copyright 2013 2016 Texas Instruments Incorporated bq27421 EVM Single Cell Impedance Track Technolo...

Страница 7: ...Table 2 Bill of Materials Count RefDes Value Description Size Part Number Mfr 1 C1 0 47uF Capacitor Ceramic 10V X5R 10 0402 1 C2 1uF Capacitor Ceramic 6 3V X5R 10 0402 4 J1 J4 J6 J7 ED555 2DS Terminal...

Страница 8: ...nts of the EVM 4 1 Software Installation Find the latest software version at http www ti com tool bqStudio Use the following steps to install Battery Management Studio 1 Ensure that the EV2300 is not...

Страница 9: ...necting the bq27421 Circuit Module to a Battery Pack Figure 7 shows how to connect the bq27421 circuit module to the cells and system load charger Figure 7 bq27421 Circuit Module Connection to Pack an...

Страница 10: ...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 t...

Страница 11: ...g Programmable bq27421 Options The bq27421 data memory comes configured per the default settings detailed in the bq27421 technical reference manual SLUUAC5 Ensure that the settings are correctly chang...

Страница 12: ...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 the...

Страница 13: ...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 Measure...

Страница 14: ...t 2013 2016 Texas Instruments Incorporated bq27421 EVM Single Cell Impedance Track Technology 9 Advanced Communication I2 C 9 1 I 2 C Communication I2 C read write operations are not specific to any g...

Страница 15: ...013 Revised July 2016 Submit Documentation Feedback Copyright 2013 2016 Texas Instruments Incorporated bq27421 EVM Single Cell Impedance Track Technology Figure 13 Parameter Q A Screen Figure 14 Golde...

Страница 16: ...d literature number Updated documents also can be obtained through the TI Web site at www ti com 1 bq27421 G1 System Side Impedance Track Fuel Gauge with Integrated Sense Resistor data sheet SLUSB85 R...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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