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Diodes Inc. AP43776 USB Type-C™ Protocol Decoder is a highly integrated, dual-channel, USB Type-C, PD3.1 / PPS / QC5 protocol decoder. It passes certification of USB Type-C power delivery specification Rev 3.1 V1.1 with PPS and Quick Charge™ QC5 protocol. The device can support the full range of PPS APDO (augmented power data object) from 3.3V to 21V with 20mV/step voltage resolution and up to 6A current with 50mA/step resolution for power management. To enable output current beyond 3A, the AP43776 supports e-Marker cable detection with a built-in VCONN switch with 30mA driving capability and overcurrent protection (OCP). Cable loss compensations are also embedded.
The Diodes Inc. AP43776 provides an embedded MCU and built-in ADC converters for voltage and temperature measurement, where overtemperature protection (OTP) and other specific functions can be implemented through I2C pins and rich GPIO pins. Working with two I2C-equipped Buck-Boost controllers or converters with PD3.1 PPS output circuitry, the AP43776 serves as the I2C master. It supports two independent PD3.1 PPS charging applications without using additional Output Enable MOS chips for each PD3.1 output port.
With built-in firmware, the AP43776 can support various smart power-management functions such as a power-sharing scheme between two attached USB Type-C PD devices, low-battery power derating, thermal power derating, LED light indication, etc. Two AP43776 devices can also be interconnected through a UART (GPIO) pin to implement a smart power-sharing scheme for all four connected USB Type-C ports attached to a fixed power source.
