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Integrated USB Type-C PD and 1-4 Cell Batteries Charging Reference Design
This reference design includes a highly integrated USB PD sink controller HUSB238 and a highly integrated Buck-boost charger MP2651. This reference design can support charging 1 to 4 cell batteries through a USB Type-C port. The HUSB238 negotiates with a USB PD power adapter (PD source). It can be set to request the any available Power Data Object (PDO), charging 1-4 cell batteries through the charger MP2651. Through the I2C interface, the PD negotiation can be set up. The bus voltage, the battery voltage, the battery charging current and component temperature can be monitored in real time. This board features maximum input power of up to 20V3A, without the need for any external FETs enabling a much smaller design size, reducing total BOM cost.This reference design provides an ultra-miniature, high reliability integrated USB PD and 1-4 cell batteries charging solution.
