Texas Instruments bq27220, Руководство пользователя, Страница: 1 / 20

1 SLUUBF5 – April 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
bq27220EVM-744 Evaluation Module
Microsoft, Windows are registered trademarks of Microsoft Corporation.
User's Guide
SLUUBF5 – April 2016
bq27220EVM-744 Evaluation Module
This evaluation module (EVM) is a complete evaluation system for the bq27220. This EVM includes one
bq27220 circuit module, an external current sense resistor. A separate orderable EV2300 or EV2400 PC
interface board for gas gauge along with a PC USB cable, and Microsoft
®
Windows
®
based PC software is
needed when using this EVM. The circuit module includes one bq27220 integrated circuit and all other
onboard components necessary to monitor and predict capacity for a system-side or removable battery
pack fuel-gauge solution. With the EV2300 or EV2400, users can:
• Read the bq27220 data registers
• Program the chipset for different configurations
• Log cycling data for further evaluation
• Evaluate the overall functionality under different charge and discharge conditions
Contents
1 Features
.......................................................................................................................
2
1.1 Kit Contents
..........................................................................................................
2
1.2 Ordering Information
...............................................................................................
2
1.3 bq27220 Circuits Module Performance Specification Summary
..............................................
2
2 bq27220EVM Quick Start Guide
...........................................................................................
3
2.1 Items Needed for EVM Setup and Evaluation
..................................................................
3
2.2 System Requirements
..............................................................................................
3
2.3 Software Installation
................................................................................................
3
2.4 Troubleshooting Unexpected Dialog Boxes
.....................................................................
3
2.5 EVM Connections
...................................................................................................
3
2.6 PC Interface Connection
...........................................................................................
5
3 Operation
.....................................................................................................................
6
3.1 Starting the Program
...............................................................................................
6
3.2 Setting Programmable bq27220 Options
........................................................................
7
3.3 Calibration
...........................................................................................................
8
3.4 Setting the CEDV Parameters
....................................................................................
9
4 Circuit Module Physical Layout, Bill of Materials and Schematic
....................................................
10
4.1 Board Layout
.......................................................................................................
10
4.2 Bill of Materials
....................................................................................................
12
4.3 Schematic
..........................................................................................................
13
5 Related Documentation from Texas Instruments
......................................................................
14
List of Figures
1 bq27220 Circuit Module Connection to Pack and System Load/Charger
............................................
4
2 Registers Screen
.............................................................................................................
6
3 Data Memory Screen
........................................................................................................
7
4 Calibration Screen
...........................................................................................................
8
5 CEDV Coefficients Calculation Flow
......................................................................................
9
6 Top Silk Screen
.............................................................................................................
10
7 Top Layer
....................................................................................................................
10
8 Bottom Layer
................................................................................................................
11
9 bq27220EVM Schematic
..................................................................................................
13