TI bq2416x双输入2.5A锂电池充电解方案
TI公司的bq24160/ bq24161/ bq24163/ bq24168是高度集成的单个锂电池充电器和系统功率通路管理器件,充电电流高达2.5A,输入电压额度20V,USB输入6.5V,主要用在手持设备,手持媒体播放器,手提设备,上网本和手提上网设备(PID).本文介绍了bq2416x主要特性,方框图, 应用电路图以及bq24160/161/163/168评估模块主要特性,应用电路,材料清单和PCB布局图.
2.5A, Dual-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path Management and I2C Interface
The bq24160/ bq24161/ bq24163/ bq24168 are highly integrated single cell Li-Ion battery charger and system power path management devices targeted for space-limited, portable applications with high capacity batteries. The single cell charger has dual inputs which allow operation from either a USB port or higher-power input supply (i.e., AC adapter or wireless charging input) for a versatile solution. The two inputs are fully isolated from each other and are easily selectable using the I2C interface.
The power path management feature allows the bq2416x to power the system from a high-efficiency DC-to-DC converter while simultaneously and independently charging the battery. The charger monitors the battery current at all times and reduces the charge current when the system load requires current above the input current limit.
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