返回页首

产品详细信息

参数

Number of series cells 1, 2, 3, 4, 5 Charge current (Max) (A) 16.2 Operating Vin (Max) (V) 26 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap Battery charge voltage (Min) (V) 1.024 Battery charge voltage (Max) (V) 23 Absolute Vin (safety rating) (Max) ((V)) 32 Control topology Switch-Mode Buck-boost Control interface I2C Features IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, USB C/PD compatible, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3.5 Rating Catalog open-in-new 查找其它 电池充电器IC

封装|引脚|尺寸

WQFN (RSN) 32 16 mm² 4 x 4 open-in-new 查找其它 电池充电器IC

特性

  • 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-cellbattery
    • 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 input current setting
    • 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 meeting IEC-CISPR 32 EMI specification
  • 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
open-in-new 查找其它 电池充电器IC

描述

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.

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.

In the absence of an input source, the BQ25731 supports the USB On-the-Go (OTG) function from a 1- to 5-cell battery to generate an adjustable 3-V to 24-V output on VBUS with 8-mV resolution. The OTG output voltage transition slew rate can be configured to comply with the USB-PD 3.0 PPS specification.

The latest version of the USB-C PD specification includes Fast Role Swap (FRS) to ensure power role swapping occurs in a timely fashion so that the device(s) connected to the dock can avoid experiencing momentary power loss or glitching. This device integrates FRS in compliance with the PD specification.

TI patented switching frequency dithering pattern can significantly reduce EMI noise over the whole conductive EMI frequency range (150 kHz ~ 30 MHz). Multiple dithering scale options are available to provide flexibility for different applications to simplify EMI noise filter design.

The charger can be operated in the TI patented pass through (PTM) mode to improve efficiency over the full load range. In PTM, input power is directly passed through the charger to the system. Switching losses of the MOSFETs and inductor core loss can be saved for high efficiency operation.

The BQ25731 is available in a 32-pin 4mm × 4mm WQFN package.

open-in-new 查找其它 电池充电器IC
下载
信息

更多信息

  • 如果您想使用符合通用标准、高达 20V 的 USB Type-C PD 端口为充电器供电,请考虑 TPS25750
您可能感兴趣的类似产品
open-in-new 产品比较
功能与比较器件相同但引脚有所不同。
BQ25730 正在供货 具有电源路径和 USB-C™ PD OTG 的 I2C 1 至 5 节电池 NVDC 降压/升压电池充电控制器 This product has power path.

技术文档

star = TI 精选相关文档
未找到结果。请清除搜索,并重试。
查看所有 7
类型 标题 下载最新的英文版本 日期
* 数据表 BQ25731 I2C 1-5 节电池降压/升压电池充电控制器 数据表 (Rev. A) 2021年 1月 28日
用户指南 BQ2573x Evaluation Module (Rev. A) 2021年 1月 19日
技术文章 Adding USB Type-C® with USB Power Delivery to battery-powered applications 2020年 11月 11日
证书 BQ25731EVM EU Declaration of Conformity (DoC) 2020年 6月 19日
技术文章 When to use rechargeable batteries in small battery applications 2019年 10月 1日
技术文章 Should I use a linear charger or a switching charger? 2015年 10月 31日
技术文章 Summertime and the livin' is easy 2014年 6月 20日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
document-generic 用户指南
149
说明
BQ25731EVM 评估模块 (EVM) 是一款具有 N 沟道 MOSFET 选择器和电流监控功能的 I2C 控制型 NVDC(窄电压直流)降压/升压充电控制器。降压转换器的输入电压范围为 3.5V 至 26V,并具有 1-5 节电池的可编程输出以及 128mA 至 15A 的充电输出电流范围。此 EVM 不含 EV2400 接口器件;如需评估 BQ25731 EVM,则须单独订购此器件。
特性
  • 主机控制型 NVDC 1 节至 5 节串联电池降压/升压充电器,具有 3.5V 至约 26V 的输入;1V 至约 23V 的充电输出以及 3V 至约 24V 的 OTG 输出
  • 支持 USB 2.0、USB 3.0、USB 3.1 (USB Type-C™) 和 USB_PD 平台
  • 支持 5mΩ 电流感应电阻器,可实现高电流和高效率
  • 支持 400kHz 或 800kHz 开关频率,可实现高效率
  • 获得专利的开关频率抖动模式,符合 IEC-CISPR 32 EMI 规范
  • 灵活的电源路径或非电源路径选项

软件开发

应用软件和框架 下载
Battery Management Studio (bqStudio) 软件套件
BQSTUDIO 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。此外,Battery Management Studio 还为监测计开发套件 (bq27GDK000EVM) 提供自动化和脚本支持。
特性
  • 对 EV2300 和 EV2400 的支持
  • 用于监控基本寄存器的实时监测计仪表板
  • 完整的寄存器访问和记录
  • 完整的数据内存访问和记录
  • 产品配置和监控工具
  • 产品配置的导入和导出
  • 为器件的目标平台自定义器件的强大指导
  • 校准和测试自动化
  • 为目标生产环境导出 FS 文件
  • 用于自动化的监测计开发套件控制
应用软件和框架 下载
GUI software for use with USB2ANY and battery charging evaluation modules
TI-CHARGER-GUI — 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。
特性
  • 基于网络的或独立的 GUI 可轻松执行图形说明
  • 通过 USB2ANY 接口适配器配置支持的电池充电器评估模块 (EVM)
  • 便于浏览按功能分组排列的页面
  • 支持 I2C 或 SMBus 时序命令

CAD/CAE 符号

封装 引脚 下载
QFN (RSN) 32 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

推荐产品的参数、评估模块或参考设计可能与此 TI 产品相关

支持与培训

可获得 TI E2E™ 论坛的工程师技术支持

所有内容均由 TI 和社区网友按“原样”提供,并不构成 TI 规范。参阅使用条款

如果您对质量、包装或订购 TI 产品有疑问,请参阅 TI 支持

视频