USB Connector

Vcc (optional)

Ch1_In

Ch1_Out

Ch2_In

Ch2_Out

D+

D-

VBUS

GND

TPD2S017

Power

Regulator

USB Controller

TPD2S017

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SLLS949B – SEPTEMBER 2009 – REVISED DECEMBER 2015

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

When a system contains a human interface connector, it becomes vulnerable to large system-level ESD strikes

that standard ICs cannot survive. Protection products are typically used to suppress ESD at these connectors.

TPD2S017 is a two-channel ESD protection device. In each channel, it contains two-stage TVS diodes and a

resistor between the two clamping stages as an isolation. This implementation provides good clamping

performance, minimal signal distortion and the support of high data speed.

8.2 Typical Application

Figure 6. Typical Application Schematic

8.2.1 Design Requirements

For this design example, a TPD2S017 will be used to protect the USB 2.0 high-speed data lines. The following

system parameters are known.

Table 1. Design Parameters

DESIGN PARAMETER

VALUE

High-speed mode high-level output voltage

400 mV ±10%

High-speed mode low-level output voltage

0 V ± 10 mV

USB 2.0 high-speed data rate

480 Mbps

Required IEC 61000-4-2 ESD Protection

±8-kV Contact

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