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参数

Number of series cells 2 Charge current (Max) (A) 11 Operating Vin (Max) (V) 22 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 7 Battery charge voltage (Max) (V) 9.54 Absolute Vin (safety rating) (Max) ((V)) 40 Control interface I2C Features Input OVP, Integrated ADC Operating Vin (Min) (V) 6 Rating Catalog open-in-new 查找其它 电池充电器 IC

封装|引脚|尺寸

DSBGA (YFF) 80 16 mm² 3.235 x 4.111 open-in-new 查找其它 电池充电器 IC

特性

  • 98.6% peak efficiency switched cap parallel charger supporting 2-cell battery and 8-A fast charge
  • Patent pending dual phase switched cap architecture optimized for highest efficiency
    • Input voltage is 2x battery voltage (7.0V to 9.54V)
    • Output current is 2x of input current (up to 4.75A)
    • Reduces power loss across input cable
  • Integrated 7-A bypass mode fast charge
    • 13mΩ charging path resistance for high current operation
  • Dual-input power mux controller for source selection
  • Support wide range of input voltage

    • Up to 22-V operational input voltage

    • Maximum 40-V input voltage with optional external ACFET and 28-V without external ACFET

  • Parallel charging with synchronized dual BQ25980 operations for up-to 12-A charging current

  • Integrated programmable protection features for safe operation
    • Input over-voltage protection (BUSOVP) and battery over-voltage protection (BATOVP)
    • Input over-current protection (BUSOCP) and battery over-current protection (BATOCP)
    • Output over-voltage protection (VOUTOVP)
    • Input under-current protection (BUSUCP) and input reverse-current protection (BUSRCP) to detect adapter unplug and prevent boost-back
    • Input short-circuit protection (BUSSCP)
    • Battery and connector temperature monitoring (TSBAT_FLT and TSBUS_FLT)
    • Junction over-temperature protection (TDIE_FLT)
    • Optional input over-voltage protection with external ACFET up to 40V
  • Programmable settings for system optimization
    • Interrupts and interrupt masks
    • ADC readings and configuration
  • Integrated 16-bit ADC for voltage, current and temperature monitoring
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描述

The BQ25980 is a 98.6% peak efficiency, 8-A battery charging solution using dual-phase switched cap architecture for 2-cell Li-ion battery. The switched cap architecture allows the cable current to be half the charging current, reducing the cable power loss and limiting temperature rise. The dual-phase architecture increases charging efficiency and reduces the input and output cap requirements. When used with a main charger such as BQ25790, the system enables the fast charging at the very low power loss from pre-charge through constant current (CC), constant voltage (CV), and termination.

The BQ25980 also supports 7-A bypass mode charge (previously called battery switch charge) through internal MOSFETs. The Rdson in bypass mode charging path is less than 13mΩ for high current operation. The integrated bypass mode allows backward compatibility of 10-V fast charging adapter to charge 2-cell battery.

The device supports dual input configuration through integrated mux control and driver for external N-FETs. It also allows single input with no external N-FET or single N-FET.

The device integrates all the necessary protection features to support safe charging, including input over-voltage and over-current protection, output over-voltage and over-current protection, input under-current and reverse-current protection, input short circuit protection, temperature sensing for the battery and cable, and junction over-temperature protection in both switched cap and bypass mode.

The device includes a 16-bit analog-to-digital converter (ADC) to provide VAC voltage, bus voltage, bus current, output voltage, battery voltage, battery current, input connector temperature, battery temperature, junction temperature, and other calculated measurements needed to manage the charging of the battery from the adapter, or wireless input, or power bank.

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技术文档

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类型 标题 下载最新的英文版本 日期
* 数据表 BQ25980 I2C Controlled, 2-Cell, 8-A Switched Cap Parallel Battery Charger with Integrated Protection and Dual-Input Selector 数据表 2020年 9月 14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
149
说明
BQ25980 评估模块 (EVM) 是一款功能全面的充电器模块,用于评估采用 WCSP 封装的高度集成式 BQ25980 开关电容电池充电器,适用于各种智能手机和平板电脑中的 2 节锂离子和锂聚合物电池。BQ25980EVM 是一项完整且快速的充电解决方案。典型用例是供 BQ25790 降压/升压充电器进行预充电和充电终止,而其中一个或两个 BQ25980 开关电容充电器进行快速充电,从而尽可能提高效率。
特性
  • 峰值效率达 98.6% 的开关电容充电器支持 2 节电池和 8A 快速充电
  • 通过双通道同步 BQ25980 运行实现并联充电,充电电流最高可达 12A
  • 集成式 7A 旁路模式快速充电
  • 用于输入源选择的双输入电源多路复用器控制器
  • 可实现安全运行的集成可编程保护功能

软件开发

驱动程序或库 下载
Linux Driver for BQ25980
BQ25980SW-LINUX Linux 驱动程序支持 I2C 控制型 8A 开关电容式 2 节并联电池充电器 BQ25980。Linux 驱动程序支持通过 I2C 总线和接口与电源子系统进行通信。

Linux 主线状态

在 Linux 主线中提供:是
可通过 git.ti.com 获取:否

Linux 源文件

与该器件关联的文件为:

  1. drivers/power/supply/bq25980_charger.c
  2. drivers/power/supply/bq25980_charger.h

源文件

drivers/power/supply/bq25980_charger.c

其他文件

drivers/power/supply/bq25980_charger.h

 

启用驱动程序支持

使用“make menuconfig”(也可以使用“make (...)

CAD/CAE 符号

封装 引脚 下载
DSBGA (YFF) 80 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

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