SLVAFL3 april 2023 BQ25890H
In smart-phone applications, the unit for charging plays a very important role because the charging unit needs to detect a correct charging port such as DCP/SDP/HVDCP to finish a safe and correct charging process. The charging unit includes different charging protocols to identify different charging source, such as BC1.2 and other special fast charging protocol so as to execute correct charging profile in charging control unit. This application note provides a key register configuration to assist software design engineers to drive BQ25890H and BQ25891H efficiently. Besides standard BC1.2, this document also includes a detailed description to drive PPS (Program Power Supply)/HVDCP source so as to realize fast charging with higher efficiency.