STMicroelectronics STUSB4710 and STUSB1602 USB Type-C controllers

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STMicroelectronics has introduced two USB Type-C certified port-controller ICs with built-in protection, which help designers implement interfaces to support their required blend of USB features. These can include power negotiation, managed active cables and support for guest protocols.

The STUSB4710 DFP controller targets power-source applications such as AC adapters and power supplies, power hubs, docking stations, smart plugs and displays. The IC integrates all the circuitry needed to negotiate power delivery with connected devices and can support up to five power delivery profiles. Through its embedded non-volatile memory, it is fully customisable and can handle the entire connection set-up with no external CPU involvement; hence it can be used directly without any extra software or firmware.

The STUSB1602 can manage USB Type-C ports in power sources or devices. On-chip configuration-channel (CC) control logic manages the entire connection set-up including selecting the VBUS default, medium-current or high-current mode. In addition, the device integrates a protected and programmable 600 mA VCONN power switch to support accessories and active cables. The product also implements a USB PD physical layer to support power-delivery software stack implemented by an external MCU.

The controller ICs simplify choices for designers, with one device dedicated to controlling downstream-facing ports (DFP) and one that can handle either downstream-facing (DFP), upstream-facing (UFP) or dual-role (DRP) use. Both support Type-C cable-attachment and connector-orientation detection and can operate over a wide supply range of 3 to 22 V with no external voltage regulator.

The controllers combine low power consumption with high-voltage capability. Overvoltage protection up to 22 V for the CC lines and up to 28 V for the high-voltage pins is built in, which prevents damage in the event of accidental short-circuit to VBUS. There is also on-chip discharge circuitry for the VBUS and VCONN power lines.

For more information: www.st.com/usbtypeC-pr.