BQ25960 是一款峰值效率为 98.1% 的 8A 电池充电解决方案,采用开关电容结构,适用于 1 节锂离子电池。开关电容结构允许电缆电流为充电电流的一半,从而减少电缆功率损耗并限制温度上升。两相结构可提高充电效率并降低输入和输出电容要求。当与 BQ2561x 或 BQ2589x 等主充电器一起使用时,系统可在恒定电流 (CC) 和恒定电压 (CV) 模式下实现从涓流充电到终端的完整充电周期。
BQ25960 通过内部 MOSFET 支持 5A 旁路模式充电(以前称为电池开关模式充电)。旁路模式充电路径中的 Rdson 为 21mΩ,用于大电流操作。集成的旁路模式可向后兼容 5V 快速充电适配器,从而为 1 节电池充电。
该器件通过集成多路复用控制和驱动器支持外部 N-FET 的双输入配置。它还允许无需外部 N-FET 的单输入或单 N-FET。
The device integrates all the necessary protection features to support safe charging, including input overvoltage and overcurrent protection, output overvoltage and overcurrent protection, input undercurrent and reverse-current protection, temperature sensing for the battery and cable, and junction overtemperature 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.
支持宽输入电压范围
高达 12.75V 的工作输入电压
带可选外部 ACFET 时最大 40V 输入电压,不带外部 ACFET 时最大 20V 输入电压
通过双通道同步 BQ25960 运行实现并联充电,充电电流最高可达 13A
用于主机控制的警报功能
| Number of series cells | 1 |
| Charge current (max) (A) | 8 |
| Vin (max) (V) | 12 |
| Cell chemistry | Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 |
| Battery charge voltage (min) (V) | 3.5 |
| Battery charge voltage (max) (V) | 4.77 |
| Absolute max Vin (max) (V) | 40 |
| Control topology | Flash Charger |
| Control interface | I2C |
| Features | Input OVP, Integrated ADC |
| Vin (min) (V) | 3.5 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| DSBGA (YBG) | 36 | 5.76 mm² 2.4 x 2.4 |