TI中文支持网我有一个项目现在评估想用BQ25601D，看了规格书有一些问题不是很明白，请指点一下。
系统框架是，需要1.5A左右的充电电流，SYS电流最大能达到1.1A左右。
考虑到终端客户会使用不同的adapter，100mA, 300mA，500mA，1A，3A的input current，不知道后端 BAT和SYS的电流会怎么分配? 会不会拉死adapter?
充电时，系统会进行工作，要求：
1.输入端有各种电流(100mA 200mA 500mA 1.5A 3A) 当输入端是小电流输入,如何能保证输入端的adapter不能被过载？(客户要求的never be overloaded)
2.输出端VBAT和SYS的先后顺序是怎样的？充电电流如何分配？如何去进行有效的控制
3.I2C可以控制哪些部分？
4.1.输入端：电流侦测?过载控制?过大电流限制?等等
4.2.输出端：充电电流控制调节？
4.3.输出端：充电电流和SYS的先后顺序,控制,分配？
Wu JW：
需要通过MCU来根据不同输入条件，来设定充电电流。充电电流必须小于输入的最大电流。
Johnsin Tao：
回复 Wu JW:
Hi9.4.2 Dynamic Power ManagementTo meet maximum current limit in USB spec and avoid over loading the adapter, the device features Dynamic
Power management (DPM), which continuously monitors the input current and input voltage. When input source
is over-loaded, either the current exceeds the input current limit (IIDPM) or the voltage falls below the input
voltage limit (VINDPM). The device then reduces the charge current until the input current falls below the input
current limit and the input voltage rises above the input voltage limit.
When the charge current is reduced to zero, but the input source is still overloaded, the system voltage starts to
drop. Once the system voltage falls below the battery voltage, the device automatically enters the supplement
mode where the BATFET turns on and battery starts discharging so that the system is supported from both the
input source and battery.
