ESD/Surge Protection Diodes Quick Start Guide if

1. Glossary, Summary and Guidelines for Essential Parameters 2. Human Interface Devices 2.1. Keyboard, Keypad, Touchpad, Buttons 2.2. Headphone Jack, Speaker, Headset ^ 3. High Speed Interfaces 3.7. Serial-ATA (SATA, e-SATA) 3.9. xDSL (ADSL, VDSL) 4 i Çps New application in this guide 4.2. FM Radio ^ New TVS Diode in Production 5. Want to know more? Collateral's List ^ 26.04.2012 Copyright © Infineon Technologies 2012. All rights reserved. Page 2

Glossary of Essential Parameters ■ RQYN is the dynamic resistance of the diode, which is calculated according to the procedure described in Infineon AN210. ■ VBR is the break down voltage defined at IR = -1mA. ■ VRWM is the maximum reverse working voltage of the diode. ■ VESD is the maximum ESD rating of the TVS diode as specified for ■ VCL is the clamping voltage of the diode. In this guide it is specified at a TLP current of 16A, which is equivalent to nearly 8kV IEC61000-4-2. For clamping voltage values at other ESD levels please refer to product data sheets under www.infineon.com/tvsdiodes....

Essential Parameters Summary Dynamic Resistance Reverse Max Working Voltage Destruction Voltage Clamping Voltage Diode Capacitance

Human Interface Devices (HID) Keyboard, Keypad, Touchpad, Buttons Buttons tend to build up electrostatic charge from repeated use and act as entry points for ESD strikes ! Application Requirements ■Robust ESD protection is required for keyboards, keypads, buttons, and other human interface devices because they are heavily exposed to ESD generated by consumers during routine use. ■ESD can be also self-generated by the equipment if it has moving parts or carries certain materials e.g. printers and copy machines with sliding parts carrying paper sheets. ■In the case of battery-powered equipment,...

Human Interface Devices (HID) (con t.) Keyboard, Keypad, Touchpad, Buttons INFINEON ESD Protection Solution ■ The ESD5V3L1B offers very robust ESD absorption capability, exceeding the IEC61000-4-2 industry standard, and helps to increase system level reliability of modern electronic devices. ■ Due to their very low dynamic resistance, these diodes quickly clamp ESD strikes at very low voltages. After every ESD strike, the diodes recover very fast without any sign of degradation. ■ They have very low leakage current for supporting longer battery duration in portable equipment. ■ These diodes are...

Human Interface Devices Headphone Jack, Speaker, Headset The earpiece of modern low impedance headsets can easily trap and divert ESD into the internal IC/ASIC! single ended Ferrite jack single ended Application Requirements ■An Audio CODEC is frequently more susceptible to ESD than many other ICs because it interfaces directly with external connectors, such as headset jacks, where ESD discharges can enter. ■For maximum protection, these highly susceptible audio systems require protection devices with extremely low dynamic resistance and low clamping voltages. ■Since audio signals are low frequency...

Human Interface Devices (cont.) Headphone Jack, Speaker, Headset INFINEON ESD Protection Solution The ESD3V3S1B and ESD5V3L1B ESD diodes are designed to quickly clamp multiple ESD strikes to a very low and stable voltage, recovering fast to normal state and without any degradation. All protection diodes in the table below are suited for implementation in applications with signals having voltage ranges up to ±5.3V or ±3.3V making them appropriate for most audio signals. Their very low leakage currents (IR) support stringent power saving requirements in batterypowered equipment. Part Name ESD3V3S1B-02LS...

High Speed Interfaces USB2.0 Single Port (USB2.0, Micro USB..) Application Requirements ■USB ports are very susceptible to over-voltage transients like ESD discharges and Cable Discharge ■Transients can propagate through the connector down to the data lines and end up in the heart of the IC/ASIC. To avoid damage, robust protection is required on data lines D+, D- and on the Vcc ■For high-speed USB2.0, the signal voltage on the D+,D- lines vary between -0.5V...+0.5V. For USB Full and Low Speed and for Vcc the TVS diode has to handle 5V. ■The data Rate of high-speed USB2.0 is 480Mbps. Capacitive...

High Speed Interfaces (cont.) USB2.0 Single Port (USB2.0, Micro USB..) INFINEON ESD Protection Solution Ultralow capacitance ESD diodes to ensure the highest signal integrity in high-speed data paths. High level protection against ESD and Cable Discharge Events increases system level reliability. For 1-line protection choose ESD diodes in miniature TSSLP-2 and TSLP-2 packages. For 2-line protection choose from the TSLP-2 leadless or the leaded TSFP-3 packages. These parts have identical electrical performance across all package types. For VCC protection Infineon recommends its general purpose...

High Speed Interfaces Every time the device is circuit receives a current or voltage transient ! Application Requirements ■ Most modern laptops implement two or more USB2.0 ports very close to one another. ■ Identical ESD requirements as for single USB2.0 ports apply (see previous pages). ■ Protection is required on all data lines D1 + , Dl-, D2+, D2- and Vcc. ■ Array devices for multi-line protection are preferred in space-constrained applications.

High Speed Interfaces (cont.) USB2.0 Dual Ports INFINEON ESD Protection Solution ESD5V5ULC is a best-in class solution providing high ESD and surge immunity protection exceeding industry‟s standards. Very low capacitance (CL) and market leading capacitance matching (∆CL) ensure best compliance with signal integrity requirements without sacrificing protection performance. Infineon „s proposal is a cost-effective single-chip solution with complete system protection: It simultaneously provides protection on all vulnerable interface lines (D1+, D1-, D2+, D2- and Vcc) in a single protection array....

High Speed Interfaces Poor package choices force designers to adopt difficult routing configurations, causing signal integrity issues ! Application Requirements ■ Due to their construction USB3.0 pins are highly exposed to ESD originating during routine use and the newer USB3.0 microcontrollers are extremely susceptible to ESD. ■ The USB3.0 link data transmission rate of 5GBps places formidable requirements on the capacitance of protection components, which needs to be low to achieve the highest signal integrity. ■ For these reasons, Infineon offers tailored USB3.0 protection with low VCL, high...