I'm considering to use LTC3871 to design a powerbank. The battery side is 14S and input/out interface is a USB type C interface. Here I have some questions:
1. The example in datasheet is a buck battery charger. Does LTC3871 support boost battery charger ？This means， the type C interface connects to Vlow and the battery connects to Vhigh. When the powerbank works in charge mode, the LTC3871 boost the type C input voltage to charge the battery. When the powerbank works in discharge mode, the LTC3871 buck the battery voltage to the type C interface.
2. What needs the external MCU to control when LTC3871 charge the battery? I don't find any information about battery charge control in the datasheet. For example, how does LTC3871 control the trickle charge current, CC/CV, end of charge, and so on....
3. The lowest voltage of type C interface is 5V. How about the efficiency when 5V boost to 58V?