Diodes Incorporated Addresses USB PD 3.1 SPR, PPS, and QC Protocols Using Automotive-Compliant, Dual-Channel Decoder
Diodes Incorporated (NASDAQ: DIOD) has launched the AP43776Q, a dual-channel USB Type-C protocol decoder designed for in-vehicle USB charging solutions. The device supports USB PD 3.1, Quick Charge QC5, and legacy battery charging standards. It features a built-in MCU, programmable output voltage adjustments, and inter-chip communication via I2C, facilitating cost-effective design. The AP43776Q is AEC-Q100 Grade 1 qualified and priced at $1.18 for 1,000 pieces, emphasizing Diodes' commitment to meeting automotive market demands.
- Launch of AP43776Q enhances product portfolio in growing automotive USB charging market.
- Supports advanced charging standards (USB PD 3.1, QC5) offering competitive advantage.
- AEC-Q100 Grade 1 qualification enhances credibility in automotive applications.
- None.
The AP43776Q features a built-in microcontroller unit (MCU) with 12kB of one-time programmable (OTP) ROM, plus a multi-time programmable (MTP) ROM resource tool. Each PD 3.1 port is fully PPS compliant, featuring a 3.3V to 21V output voltage range with 20mV/step and 50mA/step adjustment. They enable independent charging output voltages for greater power usage optimization.
An I2C interface enables inter-chip communication with DC-DC controllers and converters in the charging system. This simplifies the control loop and lowers overall component costs. Using the UART interface, two separate AP43776Q devices can be interconnected, so that smart power-sharing may be conducted across all four of their combined USB ports. Besides managing power negotiation attachment procedure, the AP43776Q enables DisplayPort™ over USB-C™ by detecting USB Type-C Alternate Mode and driving a suitable USB/DP mux. This facilitates the carrying of video data over the system’s USB connection.
The AP43776Q is AEC-Q100 Grade 1 qualified, manufactured in IATF 16949 certified facilities, and PPAP capable. It is supplied in a 20-pin W-QFN4040 wettable flank package format (with a 4mm x 4mm footprint) and is available at
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