Datasheet Texas Instruments BQ20Z70PW-V160

Manufacturer	Texas Instruments
Series	BQ20Z70-V160
Part Number	BQ20Z70PW-V160

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Design Kits & Evaluation Modules

• Evaluation Modules & Boards: BQTESTER
  Single Channel Tester
  Lifecycle Status: Active (Recommended for new designs)
  
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• Evaluation Modules & Boards: BQMTESTER
  BQMTESTER Multi Channel Test and Program Board
  Lifecycle Status: Active (Recommended for new designs)
  
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Application Notes

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  bq20z70, bq20z75, bq20z90, and bq20z95 Voltage Current & Measurement Accuracy
  PDF, 58 Kb, File published: Mar 18, 2008
  This document describes the accuracy capabilities of the bq20z70, bq20z75, bq20z90, and bq20z95 solutions. All data shown in this document was gathered empirically
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  Cell-type Specific Settings for Cell Imbalance Permanent Failure Thresholds
  PDF, 100 Kb, File published: Sep 28, 2007
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  2-Series-Cell Considerations for Advanced Fuel Gauges
  PDF, 154 Kb, File published: May 9, 2008
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  Evaluation 1: Impedance Track Gas Gauge for Novice – bq20z70/z90
  PDF, 262 Kb, File published: Oct 9, 2006
  This document introduces the bq20z70/z90 Impedance Track and bq29330 chipset gas gauge solution.
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  bq20z70/90 Printed-Circuit Board Layout Guide
  PDF, 311 Kb, File published: Aug 2, 2006
  Attention to layout is critical to the success of any battery management circuit board. The mixture of high-current paths with an ultralow-current microcontroller creates the potential for design issues that can be challenging to solve. This application report presents guidelines to ensure a stable and well-performing project.
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  bq20z70-v150 to bq20z70-v160 Change List
  PDF, 47 Kb, File published: Sep 25, 2008
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  Operating Fuel Gauge bq20z7x/8x/9x and SMBus-Like bq24745/47/65 Chargers
  PDF, 132 Kb, File published: Oct 6, 2009
  The smart charger bq24747/765 is a high-efficiency, synchronous battery charger with an integrated input current comparator. This charger provides low component count for space constrained, multichemistry battery charging applications. SMBus input current, charge current, and input current digital-to-analog converters allow for very high regulation accuracies that the system power management micr
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  Information to Provide When Reporting Issues With TI Gauges
  PDF, 975 Kb, File published: Jul 18, 2008
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  Cell Balancing Using the bq20zxx (Rev. C)
  PDF, 208 Kb, Revision: C, File published: Jan 12, 2011
  This application report discusses three types of cell imbalances that are observed in a battery pack withserially connected cells.
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  Exploring the bq20z70/90 Impedance Track(TM) Evaluation Kit
  PDF, 2.6 Mb, File published: Nov 27, 2006
  The bq20z70/90 evaluation module (EVM) and its corresponding evaluation software provides a rich and effective environment for examining the bq20z70/90 - a new, advanced battery gas gauge. This application report covers this EVM and software with an emphasis on how to use it and what to expect. EVM board connections are discussed in detail, and helpful hints are offered. For the evaluation softwar
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  Updating Firmware With the bq20zxx and EVM (Rev. B)
  PDF, 54 Kb, Revision: B, File published: Nov 7, 2006
  This application report presents the steps necessary to update the bq20z80 firmware and the EVM.
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  Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. A)
  PDF, 1.0 Mb, Revision: A, File published: Jul 25, 2011
  This application report describes a smart-battery charger reference design with a wide-input-voltage range. The reference design implements the System Management Bus (SMBus) protocol for communication between the MSP430 microcontroller and a SMBus-compatible battery fuel gauge. The MSP430 device interrogates the fuel gauge for voltage, current, and other parameters via SMBus. It then adjusts the p
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  bq20z80 EVM Data Flash Settings for Num of Serial Cells/Pack Cap (Rev. B)
  PDF, 1.1 Mb, Revision: B, File published: Nov 6, 2006
  This application report describes the configuration changes in the data flash constants in the Texas Instruments bq20z80 Gas Gauge Evaluation Software for a variety of battery-pack configurations.
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  Data Flash Programing and Calibrating the bq20zxx Family of Gas Gauges (Rev. E)
  PDF, 230 Kb, Revision: E, File published: Sep 14, 2013
  bq20zxx Data Flash Programing & Calibrating the bq20zxx Family of Gas Gauges
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  Pack Assembly and the bq20zxx (Rev. B)
  PDF, 35 Kb, Revision: B, File published: Nov 7, 2006
  This application report describes a recommended assembly sequence for the bq20z80-based battery pack. This procedure results in the most time-efficient setup of the battery pack. Included are steps for connecting a 4-series cell battery to the bq20z80EVM-001.
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  Thermistor Coefficient Calculator for TI Advanced Fuel Gauges
  PDF, 58 Kb, File published: Oct 4, 2006
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  Evaluation 7: Preparing Optimized Data Flash Constants (Rev. B)
  PDF, 29 Kb, Revision: B, File published: Dec 4, 2006
  Impedance Track в„ў technology allows bq20z80 fuel gauge ICs to automatically acquire and maintain parameters for battery modeling needed for continuous fuel-gauge accuracy, regardless of battery model or manufacturer. This application report discusses how to prepare optimized default flash constants for specific battery types.
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  bq29330 External Short Circuit Protection
  PDF, 155 Kb, File published: Aug 22, 2007
  In Li-ion battery pack design, short-circuit protection should be given sufficient emphasis to ensure that even if an external pack short does occur, it is benign. Properly designed battery fuel gauge solutions using the bq29330 analog front-end (AFE) protector and bq20z70, bq20z75, bq20z90, and bq20z95 fuel gauge ICs not only safeguards the battery, but also ensures a full recovery of functionali
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  Design 2: Avoiding ESD and EMI Problems in bq20zxx Battery Pack Electronics
  PDF, 113 Kb, File published: Nov 11, 2005
  In an increasingly wireless world, electrostatic discharge and electromagnetic interference are both potential issues for portable battery packs. This application report discusses the causes of ESD and EMI issues in battery pack designs and offers solutions for mitigation.
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  Configuring the bq20z70 Data Flash
  PDF, 2.4 Mb, File published: Dec 20, 2006
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  Design 4: Support of Multiple Li-Ion Chemistries w/Impedance Track(TM) Gas Gauge (Rev. R)
  PDF, 87 Kb, Revision: R, File published: Oct 15, 2009
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  Battery Pack Production Flow With bq20zXX
  PDF, 62 Kb, File published: Aug 2, 2006
  This application report presents a battery pack production flow diagram for bq20zXX devices and discusses each step in detail.
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  bq20z70 and bq20z90 Application Book
  PDF, 14.2 Mb, File published: Dec 13, 2006
  This document introduces the bq20z70/z90 Impedance Trackв„ў and bq29330 chipset gas gauge solution
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  Quick-Start Guide for bq20zxx Family Gas Gauges (Rev. A)
  PDF, 4.4 Mb, Revision: A, File published: Sep 4, 2007
  The intent of this application report is to give the user an overview of the design process, how to use the evaluation module and software, and to provide helpful troubleshooting techniques.This document begins with setting up the evaluation module and working with bq Evaluation Software. Several tips for troubleshooting the software connection are included, as well as navigation and what to l
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  Evaluation 3: Theory/Implementation Impedance Track Battery Fuel-Gauging Algo (Rev. B)
  PDF, 101 Kb, Revision: B, File published: Dec 20, 2006
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  bq20z70/90 Gas Gauge Circuit Design
  PDF, 1.1 Mb, File published: Aug 23, 2006
  Components in the bq20z70/90 chipset reference design are explained in this application report. Design analysis and suggested tradeoffs are provided, where appropriate.
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  Fast Cell Balancing Using External MOSFET (Rev. A)
  PDF, 153 Kb, Revision: A, File published: Jan 26, 2009
  The need for cell balancing comes from the fact that cell-to-cell differences in self-discharge, capacity, and impedance can lead to different charge states among the cells. However, the charger terminates the charge based on the summed voltage only, which may leave some cells undercharged and others overcharged. To remedy this imbalance and to achieve the goal of having all cells reaching 100% st

Model Line

Manufacturer's Classification

• Semiconductors > Power Management > Battery Management Products > Battery Fuel Gauge

Other Names:

BQ20Z70PWV160, BQ20Z70PW V160