Related Manuals for Texas Instruments bq2023EVM-001
Summary of Contents for Texas Instruments bq2023EVM-001
- Page 1 Battery Monitor Evaluation Module User’s Guide May 2002 High Performance Analog Products SLUU112...
- Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
- Page 3 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods.
- Page 4 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2002, Texas Instruments Incorporated...
- Page 5 Contents WARNING This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of com- puting devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide rea- sonable protection against radio frequency interference.
- Page 7 Contents Contents Introduction ..............Features .
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Page 8: Table Of Contents
Tables Figures 2–1 Schematic ..............2–2 Board Layout . - Page 9 Chapter 1 Introduction The bq2023EVM–001 is a complete evaluation system for the bq2023 flash-based battery-monitoring IC circuit module, a current sense resistor, an EV2201 PC interface board for gas-gauge evaluation, a PC serial cable, and Windows-based PC software. The circuit module includes one bq2023 and all other components onboard necessary to monitor capacity and other critical parameters in a one-cell Li-Ion battery pack or a battery pack of any chemistry with a voltage of 2.8–5.5 V.
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Page 10: Ordering Information
Features 1.1 Features Complete evaluation system for the bq2023 battery monitor Populated circuit module for quick setup PC software and interface board for easy evaluation Software that allows data logging for system analysis 1.2 Kit Contents bq2023 circuit module with sense resistor EV2201 PC interface board Set of evaluation software disks entitled EV2201–23 PC serial cable... -
Page 11: Schematic
Chapter 2 Circuit Module The bq2023EVM–001-based circuit module is a complete and compact example solution of a circuit for battery monitoring of a single-cell Li-Ion pack. The circuit module incorporates a bq2023 battery-monitor IC and all other components necessary to accurately monitor the charge and discharge of one Li-Ion cell or a battery pack of any chemistry with a voltage of 2.8–5.5 V. - Page 12 Pin Descriptions 2.1 Pin Descriptions BAT+ cell positive BAT– cell negative PACK+ pack positive PACK– pack negative serial communications port PDET pack removal detection STAT status output 2.2 Schematic Figure 2–1 is the schematic diagram for the bq2023EVM–001 circuit module (SLUP142–001).
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Page 13: Board Layout
Board Layout 2.3 Board Layout Figure 2–2 shows the PCB layers and assembly drawing for the bq2023EVM–001 circuit module (SLUP142–001). Figure 2–2. Board Layout Top Layer Silk 1 Layer 1 Circuit Module... - Page 14 Board Layout Figure 2–2. Board Layout (continued) Layer 2 Mask 1 Mask 2...
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Page 15: Bill Of Materials
Bill of Materials 2.4 Bill of Materials Table 2–1 lists the materials required for the bq2023EVM–001 circuit module (SLUP142–001). Table 2–1. Bill of Materials Ref Des Qty-001 Description MFG PART# Size Printed-circuit board, 0.031, FR4, SLUP142 SMOBC, HASL 3,5 mm × 2 Terminal Terminal block 3,5 mm On Shore... - Page 17 Chapter 3 EVM Hardware and Software Setup This section describes how to install the bq2023EVM–001 PC software and how to connect the components of the EVM. Topic Page Software Installation ......... . Hardware Connection .
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Page 18: Connection To Cells And System Load/Charger
3.1 Software Installation The following steps install the bq2023EVM–001 software: 1) Insert disk 1 into a 3 1/2 inch floppy drive. 2) Select the 3 1/2 inch drive using My Computer. 3) Double-click the setup.exe icon. The setup program prompts for the remaining disks and installs a Windows application group. - Page 19 3.2.2 PC Interface Connection The following steps configure the hardware for interface to the PC: 1) Connect the bq2023-based smart battery to the EV2201, using wire leads as in Table 3–1. 2) Connect the PC serial cable to the EV2201 and the PC COM port. Table 3–1.
- Page 21 Chapter 4 Operation This chapter details the operation of the or bq2023EVM-001 software. Topic Page Starting the Program ......... .
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Page 22: Initial Data Screen
Starting the Program 4.1 Starting the Program Run EV2201-23 from the Start|Programs|Texas Instruments|bq2023 Battery Monitor menu sequence. The software defaults to PC com port 1 for communication. If the EV2201 is connected to com port 1, the program loads and displays the initial data screen. - Page 23 Initialization 4.2 Initialization This section describes the settings that must be made before the bq2023 is evaluated. 4.2.1 Setting the Programmable bq2023 Wake-Up Threshold Option Select the wake-up threshold with the WOE pulldown tab at location 0x0105. This designates the potential across the sense resistor below which the bq2023 goes to sleep, provided that the sleep enable (SLEN) bit is set.
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Page 24: Flash Register Screen
Reading and Writing Flash Memory Figure 4–3. Flash Register Screen 4.3.1 The FED Register The FED register can be used to permanently disable erase and write access to each page of flash. Click the Modify FED button to access this register. -
Page 25: Ram Register Screen
RAM Addressing 4.4 RAM Addressing The RAM page of memory is viewed by selecting the RAM data screen. Click the Read RAM button to read the RAM locations. Each RAM location can be modified by clicking on the individual location and entering the new value in hex. - Page 26 The file can be imported into a text editor, spreadsheet, or word processor program. Example data log: EV2201–23 Version: 1.0.0 Texas Instruments bq2023 battery monitor 06/04/2001 2:40:35 PM ROM ID: 74 50 01 10 B2 03 00 B Sample...
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