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Home > News > Industry News > Protection for USB3.2 SuperSpe.....

Protection for USB3.2 SuperSpeed and USB Type-C

  • Author:Ella Cai
  • Release on:2018-07-06
For USB3.2 SuperSpeed and USB Type-C interfaces, Nexperia has introduced ESD protection devices.

“The new USB3.2 standard introduces an optional capacitor at the Rx inputs, so Nexperia is launching two groups of devices, one that delivers high surge robustness for positioning between the connector and capacitor, and a second that has a low trigger voltage for placement between capacitor and the system chip,” said the firm, which is calling the devices TrEOS.

Based on active silicon-controlled rectification, the devices combine capacitance down to 0.1pF with dynamic clamping resistance as low as 0.1 Ω and high robustness against surge and ESD pulses – up to 20A 8/20µs.

Turn-on time is a credible 500ps and devices can withstand up to 30kV contact discharge, “exceeding IEC 61000-4-2, level 4″, said Nexperia.

Devices for applications where the protection is placed before the capacitor are available for pulse peaks of 9.5, 15 and 20A for 8/20 IEC61000-4-5 conditions, claimed to be industry-leading, by the firm.

TrEOS devices for use after the capacitor have trigger voltages (Vt1) as low as 4.3V – feature also relevant for USB Type-A and MicroUSB interfaces.

“Options offered by USB Type-C and USB Power Delivery are very attractive,” said Nexperia product manager Stefan Seider. “To ensure that end-customers can enjoy data speeds of up to 20Gbit/s and up to 100W charging, Nexperia offers TrEOS protection that supports every protection strategy around the USB3.2 Rx capacitor.”

Amongst packaging options is an 0603 DSN0603-2 (SOD962-2) – chosen for its lack of bond wires to eliminate a potential failure mode and keep inductance low for a fast respnse. “This package is very popular for mobile and computing applications,” said the firm.