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電池充電器 IC

BQ25756

現行

具有 MPPT 功能之獨立式或 I²C 控制的 70-V 雙向降壓-升壓充電控制器

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產品規格表

BQ25756

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Charge current (max) (A) 20 Features Adjustable switching frequency, BAT temp thermistor monitoring (JEITA profile), Bidirectional, IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, SYNC Pin, Solar input/MPPT, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck-boost Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Control interface I2C Operating temperature range (°C) -40 to 125
Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Charge current (max) (A) 20 Features Adjustable switching frequency, BAT temp thermistor monitoring (JEITA profile), Bidirectional, IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, SYNC Pin, Solar input/MPPT, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck-boost Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Control interface I2C Operating temperature range (°C) -40 to 125
VQFN (RRV) 36 30 mm² (6 mm × 5 mm)
  • Wide input voltage operating range: 4.2 V to 70 V
  • Wide battery voltage operating range: up-to 70 V with multi-chemistry support:
    • 1- to 14-cell Li-ion charge profile
    • 1- to 16-cell LiFePO 4 charge profile
  • Synchronous buck-boost charge controller with NFET drivers
    • Adjustable switching frequency from 200 kHz to 600 kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Automatic maximum power point tracking (MPPT) for solar charging
  • Buck-only mode
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3 V to 65 V with 20-mV/step
    • Adjustable input current regulation (R AC_SNS) from 400 mA to 20 A with 50-mA/step using 5-mΩ resistor
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I 2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Battery overvoltage and overcurrent protection
    • Charging safety timer
    • Battery short protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status ( PG)
    • Charger operation status (STAT1, STAT2)
  • Package
    • 36-pin 5 mm × 6 mm QFN
  • Wide input voltage operating range: 4.2 V to 70 V
  • Wide battery voltage operating range: up-to 70 V with multi-chemistry support:
    • 1- to 14-cell Li-ion charge profile
    • 1- to 16-cell LiFePO 4 charge profile
  • Synchronous buck-boost charge controller with NFET drivers
    • Adjustable switching frequency from 200 kHz to 600 kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Automatic maximum power point tracking (MPPT) for solar charging
  • Buck-only mode
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3 V to 65 V with 20-mV/step
    • Adjustable input current regulation (R AC_SNS) from 400 mA to 20 A with 50-mA/step using 5-mΩ resistor
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I 2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Battery overvoltage and overcurrent protection
    • Charging safety timer
    • Battery short protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status ( PG)
    • Charger operation status (STAT1, STAT2)
  • Package
    • 36-pin 5 mm × 6 mm QFN

The BQ25756 is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with bidirectional power flow support. The device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the input terminal voltage with an added constant current loop for protection, supporting USB-PD EPR power profile.

Besides the I 2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.

The BQ25756 is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with bidirectional power flow support. The device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the input terminal voltage with an added constant current loop for protection, supporting USB-PD EPR power profile.

Besides the I 2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.
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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 BQ25756: Standalone/I2C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller datasheet PDF | HTML 2023/8/25
應用說明 MOSFET Selection Guide for BQ2575x Family PDF | HTML 2025/6/13
應用說明 How To Implement External P&O Feature On BQ2575X PDF | HTML 2025/5/16
證書 BQ25756EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) 2025/1/10
應用說明 How to Connect the BQ25756 EVM to the TPS26750 EVM and Initiate USB Type C EPR PDF | HTML 2024/11/21
技術文章 USB Type-C® 與 USB 電力輸送：專為延伸功率範圍和電池供電系統進行設計 (Rev. A) PDF | HTML Download English Version (Rev.A) PDF | HTML 2024/10/28
應用說明 Charging LiFePO4 Battery And Supercapacitor Using BQ25756 PDF | HTML 2023/12/19
白皮書 設計適合多樣化應用的電池充電系統 PDF | HTML Download English Version PDF | HTML 2023/12/5
技術文章 Designing an application to support a wide input voltage and battery voltage PDF | HTML 2023/11/23

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

BQ25756EVM — 適用於 1 至 14 芯雙向降壓升壓電池充電控制器的 BQ25756 評估模組

BQ25756EVM 評估模組 (EVM) 為
適用於 BQ25756 IC 的完整評估系統，
是具有寬輸入的降壓升壓電池充電控制器
4.2V - 70V 範圍，輸出電壓範圍最高可達
70V，並具有雙向功能。
BQ25756EVM 的最大輸入與輸出為 55V
，且最大充電電流為 10A。

使用指南: PDF | HTML
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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

TI-CHARGER-GUI — 適於與 USB2ANY 和電池充電搭配使用的 GUI 軟體評估模組

TI-CHARGER-GUI 提供網路型或獨立式圖形使用者介面，協助評估、設計、配置或測試電池充電器產品。該軟體提供暫存器的完整存取權，以及用於傳送及排序指令的簡易介面。
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計算工具

BQ25756-DESIGN-CALC — BQ25756 design calculator

BQ25756 design calculator is a calculation tool for BQ25756 which is a wide input voltage, switched mode buck-boost Li-Ion, Li-polymer, or LiFePO4 battery charge controller with bidirectional power flow support.
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參考設計

PMP41062 — 100W 整合式 USB Type-C® 和 USB 電力輸送雙向充電參考設計

此參考設計是一款適用於 4 至 10 芯電池的整合式 USB Type-C® 電力輸送 (PD) 和充電參考設計，適用於具備 USB Type-C 埠的電動工具充電器、真空吸塵器、可攜式充電器等應用。其使用 TPS25751 這款高度整合的 USB Type-C PD 控制器，其中整合了完整管理的可靠電源路徑開關，以縮小尺寸並減少外部元件。可根據使用者的應用，透過 Web 架構 GUI 輕鬆配置功率規格，從而降低設計複雜性。PD 控制器可透過簡易的 I2C 通訊，與外部電池充電器控制器 BQ25756 搭配運作。此參考設計可透過 USB PD3.0 合規輸入來源支援最大 100W (...)

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參考設計

PMP41083 — 適用於 4 至 10 芯電池的 100W 整合式 USB Type-C® 和 USB PD 充電參考設計

此參考設計透過 USB Type-C® 電力輸送 (PD) 為 4 至 10 芯電池提供 100-W 充電功率。設計採用整合式電源路徑開關和簡化的 GUI，可根據使用者應用來配置電源規格。電池充電器控制器支援廣泛範圍輸入和四開關降壓-升壓配置，並支援從降壓、升壓和降壓-升壓工作模式無縫轉換，以提供高效、高精度和可靠的充電器解決方案。

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參考設計

PMP41115 — 240W 整合式 USB Type-C 和 USB PD3.1 充電器參考設計

此參考設計為可容納 10 至 12 芯電池的整合式 USB Type-C 和 USB 電力輸送 (PD) 充電器，適合電動自行車、高電量行動電源和攜帶式充電站應用。此設計整合 USB PD3.1 控制器 TPS26750 和 TPD4S480，結合 48V 延伸功率範圍 (ERP) USB 連接埠保護器與四開關降壓升壓控制器 BQ25756，以 240W 的功率全面實現 USB PD3.1 功能。PD 控制器可透過 I2C 通訊，與電池充電器控制器 BQ25756 搭配運作。BQ25756 (...)

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