Automotive, dual-channel decoder addresses multiple charging protocols
To meet the growing opportunities in pre-installed in-vehicle USB charging, Diodes has announced an integrated dual-channel USB Type-C protocol decoder. The AP43776Q supports USB power delivery (PD) 3.1 standard power range (SPR) and programmable power supply (PPS) as well as Quick Charge QC5, fast charging protocols. It also supports legacy battery charging (BC) 1.2 and is optimised for multi-port automotive USB device charging systems.
The AP43776Q features a built-in microcontroller with 12kbyte of one-time programmable (OTP) ROM and a multi-time programmable (MTP) ROM resource tool. Each PD 3.1 port is fully PPS-compliant, featuring a 3.3 to 21V output voltage range with 20mV / step and 50mA / step adjustment. They enable independent charging output voltages for greater power usage, added Diodes.
An I2C interface enables inter-chip communication with DC/DC controllers and converters in the charging system to simplify the control loop and lower overall component costs. Using the UART interface, two AP43776Q devices can be connected, so that smart power-sharing is conducted across all four of their combined USB ports.
There is also a DisplayPort over USB-C, realised by detecting USB Type-C alternate mode and driving a suitable USB / DP mux to carry video data over the system’s USB connection.
The AP43776Q is AEC-Q100 Grade 1-qualified and manufactured in IATF 16949 -certified facilities and is PPAP-capable. It is supplied in a 20-pin W-QFN4040 wettable flank package format, achieving a 4.0 x 4.0mm footprint.
Diodes supplies semiconductors to companies in the consumer electronics, computing, communications, industrial, and automotive markets. Its product portfolio consists of discrete, analogue and mixed-signal products and packaging technology. The company offers worldwide operations of 32 sites, including engineering, testing, manufacturing, and customer service.
