Texas Instruments bq20z40/bq20z45 and bq20z60/bq20z65 Data Flash Comparison
Application Report
Author: Chase Richards
Subject: Battery Management
Abstract
This document compares the data flash values and functionality of the bq20z40/bq20z45 and the bq20z60/bq20z65 family of gas gauges. The comparisons are presented in tabular format.
Contents
- 1st Level Safety
- 2nd Level Safety
- Charge Control
- SBS Configuration
- System Data
- Configuration
- LED Support
- Power
- Gas Gauging
- Ra Table
- PF Status
- Calibration
List of Tables
- Table 1. 1st Level Safety
- Table 2. 2nd Level Safety
- Table 3. Charge Control
- Table 4. SBS Configuration
- Table 5. System Data
- Table 6. Configuration
- Table 7. Configuration (continued)
- Table 8. LED Support
- Table 9. Power
- Table 10. Gas Gauging
- Table 11. Ra Table
- Table 11. Ra Table (continued)
- Table 12. PF Status
- Table 12. PF Status (continued)
- Table 13. Calibration
Detailed Parameter Comparison
The document provides a comprehensive comparison of data flash parameters between the Texas Instruments bq20z40/bq20z45 and bq20z60/bq20z65 gas gauge families. Detailed tables cover the following categories:
- 1st Level Safety: Parameters related to voltage, current, temperature, and host communication safety features.
- 2nd Level Safety: Further safety parameters including voltage, current, temperature, FET verification, AFE verification, and fuse verification.
- Charge Control: Settings for charge temperature configuration, pre-charge configuration, general charge configuration, termination configuration, cell balancing, and charging faults.
- SBS Configuration: System Battery Status (SBS) parameters such as alarms, design voltage, manufacturing information, cycle counts, and configuration settings.
- System Data: Includes manufacturer data like lot codes and firmware versions, as well as lifetime data such as temperature, voltage, current, and power parameters.
- Configuration: Register settings for operation configurations, AFE control, permanent fail configurations, and non-removable configurations.
- LED Support: Parameters related to LED indicators, including flash periods, delays, and thresholds.
- Power: Settings for power-related functions like shutdown voltage/time, cell shutdown, charger presence, sleep current, and wake current.
- Gas Gauging: Parameters for load selection, term voltage, user rate, reserve capacity, and state-related data like Qmax and voltage/current readings.
- Ra Table: Resistance (Ra) values for different cells, crucial for accurate gas gauging.
- PF Status: Power Failure (PF) status flags and related voltage, current, and temperature parameters.
- Calibration: Calibration parameters for CC gain, CC delta, voltage, current, temperature, and other device-specific settings.
Each table details specific parameters, their associated subclass IDs, and the configurable offset and range values for both the bq20z40/bq20z45 and bq20z60/bq20z65 devices.
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. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications.
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products
- Amplifiers: amplifier.ti.com
- Data Converters: dataconverter.ti.com
- DLP® Products: www.dlp.com
- DSP: dsp.ti.com
- Clocks and Timers: www.ti.com/clocks
- Interface: interface.ti.com
- Logic: logic.ti.com
- Power Mgmt: power.ti.com
- Microcontrollers: microcontroller.ti.com
- RFID: www.ti-rfid.com
- RF/IF and ZigBee® Solutions: www.ti.com/lprf
Applications
- Audio: www.ti.com/audio
- Automotive: www.ti.com/automotive
- Broadband: www.ti.com/broadband
- Digital Control: www.ti.com/digitalcontrol
- Medical: www.ti.com/medical
- Military: www.ti.com/military
- Optical Networking: www.ti.com/opticalnetwork
- Security: www.ti.com/security
- Telephony: www.ti.com/telephony
- Video & Imaging: www.ti.com/video
- Wireless: www.ti.com/wireless
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2009, Texas Instruments Incorporated
