产品详情

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: 4.2V to 70V
  • Wide battery voltage operating range: up to 70V with multi-chemistry support:
    • 1- to 14-cell Li-ion charge profile
    • 1- to 16-cell LiFePO4 charge profile
  • Synchronous buck-boost charge controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • 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
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3V to 65V with 20mV/step
    • Adjustable input current regulation (RAC_SNS) from 400mA to 20A with 50mA/step using 2mΩ resistor
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I2C 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 6mm × 5mm QFN
  • Wide input voltage operating range: 4.2V to 70V
  • Wide battery voltage operating range: up to 70V with multi-chemistry support:
    • 1- to 14-cell Li-ion charge profile
    • 1- to 16-cell LiFePO4 charge profile
  • Synchronous buck-boost charge controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • 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
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3V to 65V with 20mV/step
    • Adjustable input current regulation (RAC_SNS) from 400mA to 20A with 50mA/step using 2mΩ resistor
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I2C 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 6mm × 5mm QFN

The BQ25756 is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO4 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.

The BQ25756 is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO4 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.

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评估板

BQ25756EVM — BQ25756 1-14 节电池、双向降压/升压电池充电控制器评估模块

BQ25756EVM 评估模块 (EVM) 是
适用于 BQ25756 IC 的完整评估系统,
BQ25756 IC 是降压/升压电池充电控制器,
具有 4.2V 至 70V 的宽输入范围和
最高可达 70V 的宽输出电压范围,且具有双向功能。
BQ25756EVM 的最大输入和输出为 55V,
最大充电电流为 10A。

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应用软件和框架

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

Battery Management Studio (bqStudio) 提供一整套稳健的工具来帮助您评估、配置、测试 TI 电池管理产品以及利用其进行设计或以其他方式对其加以利用。这包括提供对寄存器和数据内存的完全访问,其中包括支持实时查看、绘制和记录轻松连接以发送命令、控制低级通信和 I/O,以及自动和指导支持配置、校准、执行学习周期以及生成有用的文件以将器件投入生产。

bqStudio 不支持 bq20xxx 和 bq30xxx 等旧产品。可从相应的产品页面下载特定的评估软件。您为 bqStudio 下载的最新化学物质更新程序也需要更新版 bqStudio。

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应用软件和框架

TI-CHARGER-GUI — 用于 USB2ANY 和电池充电评估模块的 GUI 软件

TI-CHARGER-GUI 提供基于网络的或独立的图形用户界面,可辅助评估、设计、配置或测试电池充电器产品。该软件可实现对寄存器的全面访问,并提供一个简单接口用于发送时序命令。
支持的产品和硬件
计算工具

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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参考设计

PMP41062 — 100W 集成式 USB Type-C® 和 USB 电力输送双向充电参考设计

此参考设计为适用于 4 至 10 节电池的集成 USB Type-C® 电力输送 (PD) 和充电参考设计,适用于具有 USB Type-C 端口的电动工具充电器、真空吸尘器、便携式发电站等应用。使用高度集成的 USB Type-C PD 控制器 TPS25751,该控制器在内部集成了完全管理的可靠电源路径开关,可缩减尺寸并减少外部元件。通过基于 Web 的 GUI,可以根据用户的应用轻松配置电源规格,从而降低设计复杂性。PD 控制器通过简单的 I2C 通信与外部电池充电器控制器 BQ25756 配合运行。此参考设计可支持通过 USB PD3.0 兼容输入源以高达 100W (...)

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参考设计

PMP41083 — 适用于 4 到 10 节电池的 100W 集成 USB Type-C® 和 USB PD 充电参考设计

此参考设计采用 USB Type-C® 电力输送 (PD) 技术为 4 至 10 节电池提供 100W 充电功率。该设计采用集成式电源路径开关和简化的 GUI,可根据用户的应用配置电源规格。该电池充电器控制器支持具有四开关降压/升压配置的宽范围输入,并支持从降压、升压和降压/升压工作模式无缝转换,从而提供高效、高精度和可靠的充电器解决方案。

支持的产品和硬件
参考设计

PMP41115 — 240W 集成 USB Type-C 和 USB PD3.1 充电器参考设计

该参考设计是一款适用于 10 至 12 节电池的集成式 USB Type-C 和 USB 电力输送 (PD) 充电器,适用于电动自行车、高容量移动电源和便携式发电站等应用。该设计整合了 USB PD3.1 控制器 TPS26750 和 TPD4S480(一款 48V 扩展功率范围 (ERP) USB 端口保护器)以及 BQ25756(一款四开关降压/升压控制器),从而完全实现具有 240W 功率能力的 USB PD3.1 功能。PD 控制器通过 I2C 与电池充电器控制器 BQ25756 通信。BQ25756 (...)

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