BQ25731
- No battery MOSFET for saving cost and high efficiency
- 400-kHz/800-kHz programmable switching frequency for high efficiency/high power density
- Buck-boost charger for USB-C Power Delivery (PD)
interface platform
- 3.5-V to 26-V input range to charge 1- to 5-cell battery
- Charge current up to 16.2 A/8.1 A with 128-mA/64-mA resolution based on 5-mΩ/10-mΩ sensing resistor
- Input current limit up to 10 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistor
- Support USB 2.0, USB 3.0, USB 3.1 and USB Power Delivery (PD)
- Input Current Optimizer (ICO) to extract max input power without overloading the adapter
- Seamless transition between buck, buck-boost, and boost operations
- Input current and voltage regulation (IINDPM and VINDPM) against source overload
- TI patented switching frequency dithering pattern for EMI noise reduction
- TI patented Pass Through Mode (PTM) for system power efficiency improvement and battery fast charging achieving 99% efficiency.
- Input and battery current monitor through dedicated pins
- Integrated 8-bit ADC to monitor voltage, current and power
- Support independent comparator logic with dedicated pins
- Power up USB port from battery
(USB OTG)
- 3-V to 24-V OTG with 8-mV resolution
- Output current limit up to 12.7 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistor
- I2C host control interface for flexible system configuration
- High accuracy for the regulation
and monitor
- ±0.5% Charge voltage regulation
- ±3% Charge current regulation
- ±2.5% Input current regulation
- ±2% Input/charge current monitor
- Safety
- Thermal shutdown
- Input, system, battery overvoltage protection
- Input, MOSFET, inductor overcurrent protection
- Package: 32-Pin 4.0 mm × 4.0 mm WQFN
The BQ25731 is a synchronous buck-boost battery charge controller to charge a 1- to 5-cell battery from a wide range of input sources including USB adapter, high voltage USB-C Power Delivery (PD) sources, and traditional adapters. It offers a low component count, high efficiency solution for space constrained, 1- to 5-cell battery charging applications.
During power up, the charger sets the converter to a buck, boost, or buck-boost configuration based on the input source and battery conditions. The charger seamlessly transits between the buck, boost, and buck-boost operation modes without host control.
更多資訊
- 若您想考慮使用符合通用標準、高達 20V 的 USB Type-C PD 埠為充電器供電,請考慮 TPS25750
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 | BQ25731 I2C 1- to 5-Cell Buck-Boost Battery Charge Controller with USB-C PD 3.0 OTG Output datasheet (Rev. A) | PDF | HTML | 2021/1/28 | ||
| 應用說明 | Finding the Correct Battery Charging Design to Power Vacuum Robot System | PDF | HTML | 2024/3/4 | |||
| 應用說明 | Layout Guide for Buck-Boost Charger BQ257XX Series | PDF | HTML | 2024/1/30 | |||
| Product overview | Scalable Battery Backup Subsystem With Adjustable Output (Rev. A) | PDF | HTML | 2023/10/16 | |||
| 技術文章 | Adding USB Type-C® with USB Power Delivery to battery-powered applications | PDF | HTML | 2020/11/11 | |||
| 證書 | BQ25731EVM EU Declaration of Conformity (DoC) | 2020/6/19 |
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)。
BQ25731EVM — I2C NVDC 1 至 5 芯、16-A、降壓-升壓充電器控制器評估模組
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。
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。
TI-CHARGER-GUI — 適於與 USB2ANY 和電池充電搭配使用的 GUI 軟體評估模組
PMP22805 — 配備 USB 隨插即用 (OTG) 的 24-VIN、240-W、98% 效率、精巧型 5S 電池充電器參考設計
PMP41013 — 適用於 1 至 5 芯電池的整合式 USB Type-C® 和 USB PD 雙向充電參考設計
TIDA-010240 — 可擴充多組智慧型電池充電器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RSN) | 32 | 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。