The bq20z70 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z70 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z70 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, and reports the information to the system host controller over a serial-communication bus. It is designed to work with the bq29330 analog front-end (AFE) protection IC to maximize functionality and safety, and minimize component count and cost in smart battery circuits.

The Impedance Track technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle.

• Next Generation Patented Impedance Track? Technology accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
• Better than 1% Error Over Lifetime of the Battery
• Instant Accuracy – No Learning Cycle Required
• Supports the Smart Battery Specification SBS V1.1
• Powerful 8-Bit RISC CPU With Ultra-Low Power Modes
• Works With the TI bq29330 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
• Full Array of Programmable Protection Features
  • Voltage, Current and Temperature
• Fully Integrated High Accurate Clock
• Flexible Configuration for 2 to 4 Series Li-Ion and Li-Polymer Cells
• Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
• Smart Battery Charger Control Feature
• Two 16-Bit Delta-Sigma Converter
  • Accurate Voltage and Temperature Measurements
  • Integrating Coloumb Counter for Charge Flow
    • Better Than 0.65 nVh of Resolution
    • Self-Calibrating
• Supports SHA-1 Authentication
• 20-Pin TSSOP (PW)
• APPLICATIONS
  • Notebook PCs
  • Medical and Test Equipment
  • Portable Instrumentation

IMPEDANCE TRACK Is a trademark of Texas Instruments

• Cell chemistry
• Li-Ion/Li-Polymer
• Number of series cells
• 2-4 Cells
• Communication interface
• SMBus
• Battery capacity (Min) (mAh)
• 800
• Battery capacity (Max) (mAh)
• 15000
• Implementation
• Pack
• External capacity indication
• SOC
• Features
• Impedance Track? algorithm, SHA-1 Authentication
• Operating temperature range (C)
• -40 to 85
• Cell balancing
• Internal

BQ20Z70-V160的完整型号有：BQ20Z70PW-V160、BQ20Z70PWR-V160、HPA00729PWR，以下是这些产品的关键参数及官网采购报价：

BQ20Z70PW-V160，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：70个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网BQ20Z70PW-V160的批量USD价格：7.229（1000+）

BQ20Z70PWR-V160，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网BQ20Z70PWR-V160的批量USD价格：6.158（1000+）

HPA00729PWR，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：-，引脚镀层/焊球材料：-，TI官网HPA00729PWR的批量USD价格：6.158（1000+）

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BQMTESTER — BQMTESTER 多通道测试和程序板

The bqMTester from Texas Instruments is designed to calibrate and program electronic smart battery modules based on the bq20zxx and bq30zxx family of devices utilizing the patented Impedance Track ™ technology. The bqMTester software works in conjunction with the bqMTester HPA169 calibration board (...)

MKST-3P-ALT-EV2300 — EV2300 alternative for use with BQMTESTER and ADVANCED-BQMTESTER

该解决方案由 MKS Technology 提供，是 EV2300 通信收发器的替代产品。该解决方案由 MKS Technology 提供并已通过验证，可与 BQMTESTER 和 ADVANCED-BQMTESTER 配合使用。借助 MKS Technology 的该款收发器，您可以通过 PC USB 端口与 I2C、SMBus 和 HDQ 产品通信。

发件人： MKS Technology Inc

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bq 评估软件 (bqEVSW) 作为一种软件工具，可帮助您评估、配置、测试 bq20xxx 和 bq30xxx 系列 TI 电池管理产品以及利用其进行设计或以其他方式对其加以利用。它包含的功能可提供对寄存器和数据存储器的完全访问，其中包括对实时记录、直接低层通信的支持以及对配置和校准的支持。

必要条件

• Windows XP、EV2300 驱动程序
• EV2300 或 EV2400
• USB 线缆、EVM、连接线、电池、负载和/或充电器

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