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電池管理 IC
電池電量計

BQ27421-G1

現行

具整合式感測電阻器的 System-side(tm) 電量計 | 電池電量計

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BQ27427 現行 具有預編程化學及整合式感測電阻器的單芯電池電量計 Low power consumption, internal sense resistor and battery state-of-health (aging) estimates

BQ27421-G1

現行
產品規格表 立即訂購

產品詳細資料

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm, Integrated Sense Resistor Operating temperature range (°C) -40 to 85 Rating Catalog
Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm, Integrated Sense Resistor Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YZF) 9 3.0625 mm² 1.75 x 1.75
  • Single-Cell Li-Ion Battery Fuel Gauge
    • Resides on System Board
    • Supports Embedded or Removable Batteries
    • Powered Directly from Battery with Integrated
      LDO
    • Low-Value Integrated Sense Resistor
      (7 mΩ, Typical)
  • Easy-to-Configure Fuel Gauging Based on
    Patented Impedance Track™ Technology
    • Reports Remaining Capacity and State-of-
      Charge (SOC) with Smoothing Filter
    • Automatically Adjusts for Battery Aging, Self-
      Discharge, Temperature, and Rate Changes
    • Battery State-of-Health (Aging) Estimation
  • Microcontroller Peripheral Supports:
    • 400-kHz I2C Serial Interface
    • Configurable SOC Interrupt or
      Battery Low Digital Output Warning
    • Internal Temperature Sensor or
      Host-Reported Temperature
  • Single-Cell Li-Ion Battery Fuel Gauge
    • Resides on System Board
    • Supports Embedded or Removable Batteries
    • Powered Directly from Battery with Integrated
      LDO
    • Low-Value Integrated Sense Resistor
      (7 mΩ, Typical)
  • Easy-to-Configure Fuel Gauging Based on
    Patented Impedance Track™ Technology
    • Reports Remaining Capacity and State-of-
      Charge (SOC) with Smoothing Filter
    • Automatically Adjusts for Battery Aging, Self-
      Discharge, Temperature, and Rate Changes
    • Battery State-of-Health (Aging) Estimation
  • Microcontroller Peripheral Supports:
    • 400-kHz I2C Serial Interface
    • Configurable SOC Interrupt or
      Battery Low Digital Output Warning
    • Internal Temperature Sensor or
      Host-Reported Temperature

The Texas Instruments bq27421-G1 fuel gauge is a minimally configured microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires very little user configuration and system microcontroller firmware development.

The bq27421-G1 fuel gauge uses the patented Impedance TrackTM algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

Battery fuel gauging with the bq27421-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree™ chip scale package (DSBGA) is ideal for space-constrained applications.

The Texas Instruments bq27421-G1 fuel gauge is a minimally configured microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires very little user configuration and system microcontroller firmware development.

The bq27421-G1 fuel gauge uses the patented Impedance TrackTM algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

Battery fuel gauging with the bq27421-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree™ chip scale package (DSBGA) is ideal for space-constrained applications.
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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet bq27421-G1 System-Side Impedance Track Fuel Gauge With Integrated Sense Resistor datasheet (Rev. E) PDF | HTML 2016年 1月 6日
* User guide bq27421-G1 Technical Reference Manual (Rev. C) 2016年 8月 30日
Technical article Get smart: How intelligent battery gauges improve battery life in continuous gluco PDF | HTML 2019年 4月 19日
Application note Achieving The Successful Learning Cycle 2018年 6月 19日
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 2018年 6月 5日
Application note Gauge Communication 2017年 1月 12日
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm (Rev. A) PDF | HTML 2014年 5月 16日
More literature Quickstart Guide for bq27421-G1 (Rev. B) 2014年 5月 6日
Application note Verification and Accuracy Test Methods of Gas Gauges 2013年 6月 5日
Application note Going to Production With the bq274xx Family of Gas Gauges 2011年 6月 27日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BQ27421EVM-G1A — BQ27421EVM-G1A 系統端電池電量計評估模組板

System-Side Battery Fuel (Gas) Gauge Solution Evaluation Module

The BQ27421EVM-G1A evaluation module is a complete evaluation system for the bq27421. The EVM includes one bq27421 circuit module with an integrated current-sense resistor. A separated orderable EV2400 PC interface board for gas gauge (...)
使用指南: PDF
TI.com 無法提供
開發板

BQ27421EVM-G1B — BQ27421EVM-G1B 系統端電池電量計評估模組

System-Side Battery Fuel (Gas) Gauge Solution Evaluation Module

The BQ27421EVM-G1B evaluation module is a complete evaluation system for the bq27421. The EVM includes one bq27421 circuit module with an integrated current-sense resistor. A separated orderable EV2300 or EV2400 PC interface board for (...)
使用指南: PDF
TI.com 無法提供
介面轉接器

EV2400 — 適用電池電量 (氣量) 計評估模組的 USB PC 介面板

The EV2400 EVM interface board enables an IBM-compatible or other type PC (with the required driver for its particular platform) to communicate with the Texas Instruments SMBus or I2C interface gas gauges via a Universal Serial Bus (USB) port. In addition to this board, PC software is required to (...)

使用指南: PDF
TI.com 無法提供
應用軟體及架構

BQSTUDIO — Battery Management Studio (bqStudio) 軟體

Battery Management Studio (bqStudio) 提供全套的強固工具，可協助評估、設計、配置、測試或使用 TI 電池管理產品的程序。其中包括可提供暫存器及資料記憶體完整存取的功能，包括支援即時觀看、繪圖和記錄、傳送命令的簡易介面、直接低階通訊和 I/O，以及用於配置、校準和執行學習週期的自動化和引導支援，進而產生實用的檔案，以利裝置投入生產。

在 bqStudio 中也支援舊產品，如 bq20xxx 和 bq30xxx。從適當的產品頁面下載特定的評估軟體。此外，您為 bqStudio 下載的最新化學更新程式需要 bqStudio 的更新版。
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驅動程式或資料庫

BQ27XXXSW-LINUX — 適用於 BQ27XXX 的 Linux 驅動程式

The Linux driver supports the BQ27x series of Battery Fuel Gauges. The Linux driver supports communication through the I2C/HDQ bus and interfaces with the power supply sub-system to monitor battery properties.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

(...)

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支援軟體

BQEVSW-MKST-UPDATE — Software Update to enable BQEVSW to use MKST-3P-ALT-EV2300

BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)

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支援產品和硬體
下載選項
參考設計

TIDA-00669 — 具有電量計的 500mA 無線充電器 BoosterPack 參考設計

TIDA-00669 是提供無線充電器及電池管理的 BoosterPack™ 參考設計，可供電給任何 TI LaunchPad™ (www.ti.com/launchpad)。這是一款高度整合的電源管理參考設計，非常適合低功耗應用。主要的儲存方法是外接式鋰聚合物可充電電池。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00712 — 智慧型手錶電池管理解決方案參考設計

此參考設計適用於智慧型手錶的電池管理解決方案 (BMS)。它適用於智慧型手錶等低功率穿戴式裝置。此設計包括一個超低電流 1 芯鋰離子線性充電器；一個高度集成、Qi 標準相容的無線電源接收器；一個符合成本效益的電壓和電流防護積體電路；一個系統側集成感測電阻器電池電量計和一個輸出高達 28 V 的升壓器，適用於 LCD 顯示裝置。

此設計採用小尺寸 (20mm x 29mm) PCB 實作；其輸入電源可為來自 micro-USB 連接器或符合 Qi 標準的無線電源發射器，並且當偵測到來自 micro-USB 連接器的 5V 電源供應時，無線電源發射器將關閉。

Design guide: PDF
電路圖: PDF
參考設計

TIDA-00586 — 電錶 Booster Pack 參考設計

TIDA-00586 參考設計是一款電池電量計，其設計用途是作為 TI Launchpad 開發板上的 Booster Pack。使用此開發板將減少 bq27421 電池電量計 IC 的設計和測試所花費的時間。您可以選擇任何合適的充電器為電池充電。將系統連接到電池電量計，即可監控被測電池的電流、電壓、SOC 和 SOH。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00055 — 具有 2A FET 的獨立同步切換模式鋰離子充電器參考設計

This reference design is a solution for a Li-Ion charge management IC. It has a highly integrated battery charge IC utilizing synchronous switch mode power conversion for efficient and comprehensive charge control of a single cell Li-Ion battery. The solutionprovides a convenient method to evaluate (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00053 — 適用於磷酸鐵鋰電池應用的 1A、單節電池線性充電器參考設計

This reference design is designed to deliver up to 1 A of continuous current to the battery and/or system. It has a 4.9 VDC, 50 mA max internal LDO that can be used for USB applications or any other need. It uses the bq25070, a highly integrated LiFePO4 linear battery charger, in order to target (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00045 — 單晶片充電及動態電源路徑管理 IC 參考設計

This reference design is a Single-Chip Charge and Dynamic Power-Path Management IC solution. It is a complete bq24030 based circuit design and provides a convenient method to evaluate the operation and performance of the IC. The development solution includes a tested evaluation board; a user guide (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00044 — USB 鋰離子電池充電器和電源路徑管理參考設計

This reference design delivers up to 1000 mA of continuous current to the battery output when programmed with a resistor on the ISET pin and is programmed at the factory for ~540mA. The USB current limit modes are selected by the ISET2 pin and limits current to a maximum of 500 mA (logic high) or (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00042 — 1A 單輸入、單芯鋰離子電池充電器參考設計

This reference design is targeted at space-limited portable applications. The devices in the design operate from either a USB port or AC adapter. The solution has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00031 — 具有整合式感應電阻器的系統側 ImpedanceTrack 電池電量計參考設計

This reference design is a complete evaluation system solution for the bq27421. The solution includes one bq27421 circuit module with an integrated current-sense resistor. A separated orderable EV2300 or EV2400 PC interface board for gas gauge interface along with a PC USB cable, and (...)
Test report: PDF
電路圖: PDF
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DSBGA (YZF) 9 Ultra Librarian
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  • 進行中的可靠性監測
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