The Nexperia TrEOS diodes are packaged without bond wires, resulting in lower inductance for mobile and computing applications

By Warren Miller,
contributing writer

As USB Type-C becomes the new standard for charging and data
transmission, manufacturers will have to accommodate the faster speeds and
improved power delivery the interface provides. Enter Nexperia, the former
standard products division for NXP, a manufacturer of discretes, logic and
MOSFET devices. The company recently updated its TrEOS ESD protection
diode series
to function in conjunction with USB Type-C interfaces,
providing what it claims are the highest surge robustness and the lowest
trigger voltage on the market.

The TreEOS features two series of devices: a group designed
to be positioned between the connector and the capacitor and another for placement
between the capacitor and the system chip. The TrEOS diodes are packaged
without bond wires, resulting in lower inductance and high utility for mobile
and computing applications.

According to Nexperia, incorporating active
silicon-controlled rectification technology allows the TrEOS ESD series to
provide uncommonly low capacitance (down to 0.1 pF) and low clamping (dynamic
resistance down to 0.1 Ω) while maintaining high robustness against surge
and ESD pulses (up to 20A 8/20 µs for very fast datalines). 

Photo courtesy of

TrEOS devices available for applications where protection is
required before the capacitor boast current ratings of 9.5 A, 15 A, and 20 A in
8/20 IEC61000-4-5 conditions. TrEOS devices for use after the capacitor claim
the lowest trigger voltages (V t1), down to 4.3 V. The devices also
feature a very fast turn-on time at about 0.5 ns and devices can withstand up
to 30 kV contact discharge, exceeding IEC 61000-4-2, level 4, said the company.
These features also make them suited for MicroUSB and USB Type-A interfaces.

USB-C interfaces provide significant functionality and open
new application areas. With data speeds of up to 20 Gbits/s, even the most
data-hungry displays, storage devices and communications interfaces won’t miss
a meal. One new and interesting application area that is showing up thanks to
the USB-C connector is intelligent peripheral devices. These devices can do
very high-speed data capture and data processing without loading down a connected
device. The fast communications speed and robust power provided by the USB-C
interface enables a new class of performance for instrumentation, signal
processing and intelligent surveillance, as well as a host of other similar

USB-C is clearly an interface with a wide and
growing applications base. New devices like the Nexperia TrEOS are welcome
additions to the connected device designer’s toolbox. The company provides a
parametric USB protection search guide to help
designers select the best device for their systems.