Diodes provides highly integrated dual - channel USB Type-C protocol decoders for the rapidly increasing number of USB charging opportunities in cars. The AP43776Q supports USB Power Transfer (PD) 3.1 Standard Power Range (SPR) and Programmable Power Supply (PPS), as well as the Quick Charge QC5 Fast Charge protocol. The product also supports older battery charging (BC) 1.2, which optimizes the performance of multi-port vehicle USB charging systems.
Pin Assignments
The AP43776Q is built into a microcontroller unit (MCU) with a 12kB disposable programmable (OTP) ROM and multiple programmable (MTP) ROM resource tool. Each PD 3.1 port can fully comply with PPS specifications, with output voltage range from 3.3V to 21V, and each step can be adjusted to 20mV and 50mA, which can realize independent charging output voltage and further optimize power consumption.
Functional Block Diagram
The charging system adopts I2C interface, as well as DC-to-DC controller and converter, which is conducive to inter-chip communication, simplifies the control loop and reduces the overall component cost. The two AP43776Q devices can be linked through the UART interface, so the whole set of four USB ports have the opportunity to achieve intelligent power sharing. In addition to managing the power coordination connection, the AP43776Q can detect USB Type-C alternative modes and drive the appropriate USB/DP multitasker, thus enabling USB-C™ for DisplayPort™ signal transmission. This feature allows video data to be transferred online via the system's USB.
AP43776Q meets AEC-Q100 Grade 1 specification, is manufactured in an IATF 16949 certified facility and supports PPAP, Use a 20-pin W-QFN4040 Side soldable package format (size 4mm x 4mm).
