BQ27421-G1
- 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
- Reports Remaining Capacity and State-of-
- 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.
技術文件
| 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 | bq27421-G1 System-Side Impedance Track Fuel Gauge With Integrated Sense Resistor datasheet (Rev. E) | PDF | HTML | 2016/1/6 | ||
| * | 使用指南 | bq27421-G1 Technical Reference Manual (Rev. C) | 2016/8/15 | |||
| 技術文章 | Get smart: How intelligent battery gauges improve battery life in continuous gluco | PDF | HTML | 2019/4/19 | |||
| 應用說明 | Achieving The Successful Learning Cycle | PDF | HTML | 2018/6/19 | |||
| 應用說明 | Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) | PDF | HTML | 2018/6/5 | |||
| 應用說明 | Gauge Communication | 2017/1/12 | ||||
| 應用說明 | Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm (Rev. A) | PDF | HTML | 2014/5/16 | |||
| 更多文件說明 | Quickstart Guide for bq27421-G1 (Rev. B) | 2014/5/6 | ||||
| 應用說明 | Verification and Accuracy Test Methods of Gas Gauges | 2013/6/5 | ||||
| 應用說明 | Going to Production With the bq274xx Family of Gas Gauges | 2011/6/27 |
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)。
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 (...)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 (...)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 (...)
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。
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
(...)
BQEVSW-MKST-UPDATE — Software Update to enable BQEVSW to use MKST-3P-ALT-EV2300
BQ-BATTERY-PROGRAMMER-SW 軟體開發套件 (SDK) 是一系列穩固的軟體命令列工具，可協助使用 TI 電池管理產品進行編程、測試或組裝電池組作業。此軟體中的可執行檔可與 EV2300 通訊收發器的 MKST-3P-ALT-EV2300 MKS 技術替代產品配合使用。這些可執行檔可與單站點一起使用，並可透過使用 MKS Technology Inc. 提供的附加軟體和 GUI 擴展到多個站點。此軟體不支援多工作站。
每次下載都會有多個可執行檔，通常每個平台一個。另外也支援較舊的產品，如 BQ20xxx 和 BQ30xxx。我們提供使用 C++ 程式語言 API 和 (...)
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 (...)
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 (...)
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 (...)
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 (...)
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 (...)
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 (...)
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。
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。
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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YZF) | 9 | Ultra Librarian |
訂購與品質
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。