Electronic Design
Interview: TE Connectivity’s Egbert Stellinga Discusses USB 3.1

Interview: TE Connectivity’s Egbert Stellinga Discusses USB 3.1

USB 3.0 is found on most new motherboards and mobile devices. It provides significantly higher throughput and more functionality than USB 2. Also, USB 3 provided backward compatibility with USB 2.0 in terms of connectors, though it hid additional connections. There were new USB 3 connectors as well, but they tended to be larger than the USB 2 connectors.

The USB 3.1 connector supports this higher-speed interface, and TE Connectivity (TE) is supplying these new connectors. Egbert Stellinga, product manager with TE Consumer Devices, has been with the company for almost 20 years. He also has managed many products and projects for several TE customers in mobile devices since 2001.

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Wong: Why is there a new USB 3.1 connector?

Stellinga: Currently we see a few trends in mobile devices: increased data speed, increased charging power even beyond 5 A, and integration of video capabilities into the device. Other than USB 3.1 standard connectors, the HSMIO (high-speed multi-I/O) connector from TE can combine all of these features in one connector.

In addition, the USB 3.1 standard connector is designed similar to what we call the sidecar connector (see the figure). It is a double-size connector with two plugs next to each other. TE’s innovation drove a solution that captures all of the above into a micro USB 2.0-sized connector. The ultimate result provides USB 3.1 data speed and power charging plus video in a micro USB 2.0-sized connector.

Figure 1. The standard USB 3.0 connector has a sidecar configuration.

Wong: What advantages does the HSMIO connector have over existing connectors?

Stellinga: Our product is one of the industry’s first high-speed multi-I/O connectors that transfers USB 3.1 signals in a micro USB 2.0 form factor. It handles data up to 10 Gbits/s supporting USB 3.1 Super-Speed and 3-A power delivery, but all in a smaller, micro USB 2.0-sized interface. Because of this ability to maintain high performance in this smaller size, our new product addresses the growing demand for mobile devices to have more increased functionality, higher speed, and larger screens that require high-power battery consumption.

Meanwhile, the connector’s small size, compatibility, durability, and improved electromagnetic interference (EMI) performance also present key advantages for use in small-size, battery-operated portable devices such as mobile phones, tablets, digital cameras, navigation devices, media players, and wearable devices.

Wong: What challenges or issues did TE encounter when designing the connectors, and how were they addressed?

Stellinga: In particular, the high-speed design and protection against EMI (electromagnetic interference) challenged our engineering team. Supporting the USB 3.1 standard requirement of 10 Gbits/s required extensive simulation and testing. Also, the EMI leakage of the USB signals required a particular construction of the shells in the cable assembly.

Wong: What advantages does TE’s solution provide?

Stellinga: As a world leader in connectivity, TE is committed to delivering extraordinary customer experiences. We strive to deliver miniaturization solutions that will help mobile device manufacturers create smaller, thinner, and lighter products. With an extensive global manufacturing footprint and product breadth, TE has a full range of the latest technologies to support consumer electronics applications. A prime example is this newly launched HSMIO connector. For more details on TE’s latest space-saving products, please visit www.te.com/en/product-launch/slim-solution.html.

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