Four chip dock design brings USB-C power to smartphone

May 12, 2017 // By Nick Flaherty
Samsung's DeX Station uses four Cypress USB-C devices
Samsung is using a four chip design from Cypress Semiconductor to provide USB-C connectivity and power delivery for smartphones.

The DeX Station allows a Galaxy S8 or S8+ smartphone to be docked to a PC via a USB-C port and use apps, review documents, and set or check notifications in a desktop environment, as well as send and receive text messages and make phone calls.

The four-chip USB-C dock design charges the phone quickly through the USB-C port and provides plug-and-play connectivity to a monitor, keyboard, mouse and a variety of USB peripherals.

“The Samsung DeX is a critical piece in making the smartphone-as-a-pocket-PC usage model a reality, and we’re proud that Cypress USB-C is supporting this new class of enterprise application,” said Ajay Srikrishna, vice president of the Wired Connectivity Business Unit at Cypress. “We optimized our USB-C dock solution to charge smartphones while providing the simple, one-cable connection from the smartphone to the peripherals needed to create a desktop experience.”

The design uses two EZ-PD CCG2 CYPD2122 controllers for power delivery and smart device charging, with one controlling power upstream to the smartphone and the other controlling power downstream to peripherals. The CYP65632 USB 2.0 hub controller allows two USB devices and an Ethernet port to connect to the host smartphone. The CY7C65210 billboard controller enables an improved user experience by preventing connection failures due to mismatched capabilities between peripherals and the smartphone, while enabling firmware upgrades to both USB-C controllers.

The CCG2 is the market’s smallest programmable USB-C solution, CCG3 controller the market’s most integrated USB-C solution and CCG4, the first two-port USB-C solution. The EZ-PD portfolio was the first to support the USB PD 3.0 specification, which enables more robust end-to-end power delivery and charging solutions for laptops and other mobile devices.

The USB Type-C standard is gaining adoption with top-tier electronics manufacturers by enabling slim industrial designs, easy-to-use connectors and cables, and the ability to transmit multiple protocols and deliver up to 100W of power. The USB Type-C standard’s reversible 2.4-mm-high connector is significantly smaller