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) 32000 Implementation Pack, System External capacity indication None Features CEDV algorithm 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) 32000 Implementation Pack, System External capacity indication None Features CEDV algorithm Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YZF) 9 3.0625 mm² (— mm × — mm)
  • Single-Cell Li-Ion Battery Fuel Gauge
    • Resides in Pack or on System Board
    • Supports Embedded or Removable Batteries
    • Powers Directly from Battery with Integrated
      LDO
    • Supports a Low-Value (10-mΩ) External Sense
      Resistor
  • Ultra-Low Power Consumption in NORMAL
    (50 µA) and SLEEP (9 µA) Modes
  • Battery Fuel Gauging Based on Compensated
    End-of-Discharge Voltage (CEDV) Technology
    • Reports Remaining Capacity and State-of-
      Charge (SOC) with Smoothing Filter
    • Adjusts Automatically for Battery Aging, Self-
      Discharge, Temperature, and Rate Changes
    • Provides 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 OR
      External Thermistor
  • Single-Cell Li-Ion Battery Fuel Gauge
    • Resides in Pack or on System Board
    • Supports Embedded or Removable Batteries
    • Powers Directly from Battery with Integrated
      LDO
    • Supports a Low-Value (10-mΩ) External Sense
      Resistor
  • Ultra-Low Power Consumption in NORMAL
    (50 µA) and SLEEP (9 µA) Modes
  • Battery Fuel Gauging Based on Compensated
    End-of-Discharge Voltage (CEDV) Technology
    • Reports Remaining Capacity and State-of-
      Charge (SOC) with Smoothing Filter
    • Adjusts Automatically for Battery Aging, Self-
      Discharge, Temperature, and Rate Changes
    • Provides 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 OR
      External Thermistor

The Texas Instruments bq27220 battery fuel gauge is a single-cell gauge that requires minimal user-configuration and system microcontroller firmware development, leading to quick system bring-up. The bq27220 device uses the Compensated End-of-Discharge Voltage (CEDV) algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (min), battery voltage (mV), temperature (°C), and state-of-health (%).

The bq27220 battery fuel gauge has ultra-low power consumption in NORMAL (50 µA) and SLEEP (9 µA) modes, leading to longer battery runtime. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.

Customers can use preloaded CEDV parameters in ROM or can generate custom chemistry parameters using TI’s web-based tool, GAUGEPARCAL. Custom-generated parameters can be either programmed in the device RAM by the host on power up of the system or customers can program the parameters to an onboard One-Time Programmable (OTP) memory.

Battery fuel gauging with the bq27220 device 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 bq27220 battery fuel gauge is a single-cell gauge that requires minimal user-configuration and system microcontroller firmware development, leading to quick system bring-up. The bq27220 device uses the Compensated End-of-Discharge Voltage (CEDV) algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (min), battery voltage (mV), temperature (°C), and state-of-health (%).

The bq27220 battery fuel gauge has ultra-low power consumption in NORMAL (50 µA) and SLEEP (9 µA) modes, leading to longer battery runtime. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.

Customers can use preloaded CEDV parameters in ROM or can generate custom chemistry parameters using TI’s web-based tool, GAUGEPARCAL. Custom-generated parameters can be either programmed in the device RAM by the host on power up of the system or customers can program the parameters to an onboard One-Time Programmable (OTP) memory.

Battery fuel gauging with the bq27220 device 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 下載最新的英文版本 日期
* 資料表 bq27220 Single-Cell CEDV Fuel Gauge datasheet (Rev. A) PDF | HTML 2016/4/11
* 使用指南 BQ27220 Technical Reference Manual (Rev. A) PDF | HTML 2022/11/1
技術文章 在超低功耗系統中實現更高準確度的電池電量計性能 PDF | HTML PDF | HTML 2026/4/28
技術文章 Battery-charging tips for video doorbell applications PDF | HTML 2019/4/15
應用說明 Gauge Communication 2017/1/12
應用說明 Enhanced Resolution Gauging for Low Current Applications Using Scaling 2016/10/26
應用說明 bq27220 Calibration Guide 2016/5/24

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

BQ27220EVM-744 — BQ27220 系統側 CEDV 電池電量計評估模組

BQ27220EVM-744 評估模組是適用於 bq27220 的完整評估系統。此 EVM 包含一個具有外部感測電阻的 bq27220 電路模組。使用此 EVM 時,需要可分開訂購的 EV2400 PC 介面板(用於氣量計介面)、PC USB 連接線和 Windows™ PC 軟體。搭配 EV2400 介面板和軟體,使用者可以:(1) 讀取 bq27220 資料暫存器。(2) 針對不同配置編程晶片組。(3) 記錄循環資料以供進一步評估。(4) 在不同充電和放電條件下,評估 bq27220 解決方案的整體功能。最新的 Windows™ PC 軟體可從德州儀器網站上的產品資料夾下載。

使用指南: PDF
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應用軟體及架構

BQSTUDIO-STABLE — Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

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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應用軟體及架構

BQSTUDIO-TEST — Battery Management Studio (bqStudio) Software – Beta version downloads

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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應用軟體及架構

GPCCEDV — 適用於 CEDV 電量計的計量參數計算機

計量參數計算機 (GPC) 是一種數學計算與模擬工具,可協助電池設計人員為特定電池性能評測工具取得相符的補償放電終止電壓 (CEDV) 係數。此工具可讓使用者提高電量計 IC 隨溫度變化的準確度。

電池組必須使用其中一種以 TI 的 CEDV 演算法為基礎的電量計。可接受 3 對記錄檔案,而這些檔案是使用透過 USB 連接 CEDV 評估板之 TI 的 Battery Management Studio (bqStudio) 軟體建立的。充電和放電需要使用外部設備。若要進行準確的計算,也會需要電池組設定的其他參數。輸出資訊將以包含 CEDV (...)

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支援軟體

SLUC608 — Smartflash OTP Programmer v 0.9.3

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計算工具

GAUGEPARCAL — 計量參數計算機

計量參數計算機 (GPC) 是一種數學計算與模擬工具,可協助電池設計人員為特定電池性能評測工具取得相符的補償放電終止電壓 (CEDV) 係數。此工具可讓使用者提高電量計 IC 隨溫度變化的準確度。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZF) 9 Ultra Librarian

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建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

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