TVS Quick Start Guide May 2012

ESD/Surge Protection Diodes
Quick Start Guide
May 2012
Table of Contents
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
3.1.
USB2.0 Single Port
3.2.
Dual USB2.0 Ports
3.3.
USB3.0 Super Speed
3.4.
HDMI 1.3 and 1.4a
3.5
MHL Interface
3.6.
Display Port
3.7.
Serial-ATA (SATA, e-SATA)
3.8.
Gigabit Ethernet
3.9.
xDSL (ADSL, VDSL)
3.10.
Vcc Line Protection
4. Antenna Protection
4.1.
GPS
New application in this guide
4.2.
FM Radio
New TVS Diode in Production
4.3.
Mobile TV
5. Want to know more? Collateral’s List
26.04.2012
Copyright © Infineon Technologies 2012. All rights reserved.
Page 2
Glossary of Essential Parameters
 RDYN 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
contact ESD in IEC61000-4-2.
 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.
 CL is the parasitic capacitance of the diode at 1MHz and 0V bias.
 IR is the reverse current of the diode specified at a given reverse
voltage, VR. Unless otherwise specified, IR values are shown in this
guide at VR = VRWM
26.04.2012
Page 3
Essential Parameters Summary
RDYN
R
DYN
Dynamic Resistance
VBR
V
BR
Breakdown Voltage @ IR = 1mA
VRWM
V
RWM
Reverse Max Working Voltage
M
VESD
V
ESD
Destruction Voltage
VCL
V
CL
Clamping Voltage
CL
Diode Capacitance
VESD
VCL
VBR
VRWM
RDYN
26.04.2012
Page 4
Human Interface Devices (HID)
Keyboard, Keypad, Touchpad, Buttons
Keypad
WARNING
Buttons tend to build up electrostatic
charge from repeated use and act as
entry points for ESD strikes !
*
7
4
1
0
8
5
2
#
9
6
3
R1
R2
R3
C1
C2
C3
C4
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, ESD diodes with very low leakage current are required
to extend battery life.
26.04.2012
Page 5
Human Interface Devices (HID)
(cont.)
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 available in leadless packages with sizes down to 0.6 x 0.4 mm for maximum
protection in the smallest area.
Part Name
VRWM
VESD
RDYN
VCL
IR max
CL
ESD5V3L1B-02LS
1-Line
TSSLP-2
0201 size
0.6x0.3x0.31mm
±5.3V
±20kV
0.22Ω
17V
100nA
4pFmin
ESD5V3L1B-02LRH
1-Line
TSLP-2
0402 size
1x0.6x0.39mm
±5.3V
±20kV
0.22Ω
17V
100nA
4pFmin
Packages
Want to know more? → read AN277
26.04.2012
Page 6
Human Interface Devices
Headphone Jack, Speaker, Headset
WARNING
The earpiece of modern low impedance
headsets can easily trap and divert ESD
into the internal IC/ASIC!
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 analog signals, usually less than 30kHz, diode capacitance is
usually a “don‟t care”.
Bidirectional diodes are normally compulsory to accommodate audio signals. Unidirectional devices
can be used only in interfaces where there is no negative voltage swing.
26.04.2012
Page 7
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
ESD5V3L1B-02LS
ESD3V3S1B-02LRH
ESD5V3L1B-02LRH
Package
1-Line
0201 size
TSSLP-2
0.6x0.3x0.31mm
1-Line
0402 size
TSLP-2
1x0.6x0.39mm
VRWM
VESD
RDYN
VCL
IR max
CL
±3.3V
±30kV
0.13Ω
± 9V
50nA
14pFtyp
±5.3V
±20kV
0.22Ω
±17V
100nA
4pFmin
±3.3V
±30kV
0.13Ω
±9V
50nA
14pFtyp
±5.3V
±20kV
0.22Ω
±17V
100A
4pFmin
Want to know more? → read AN277
26.04.2012
Page 8
High Speed Interfaces
USB2.0 Single Port (USB2.0, Micro USB..)
WARNING
Connectors not only allow the free
flow of data between two
systems…but also ESD strikes!
Application Requirements
USB ports are very susceptible to over-voltage transients like ESD discharges and Cable Discharge
Events (CDE).
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
power-line.
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 loading from discrete components needs
to be minimized for optimal signal integrity.
26.04.2012
Page 9
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 diode series.
Part Name
Package
VRWM
VESD
RDYN
VCL
IR max
CL
Single line diode options for one I/O line protection (leadless)
ESD5V3U1U-02LS
0201 size TSSLP-2
0.6x0.3x0.31mm
5.3V
±20kV
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
ESD5V3U1U-02LRH
0402 size TSLP-2
1.0x0.6x0.39mm
5.3V
±20kV
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
Dual line diode options for two I/O lines protection (leadless or leaded)
ESD5V3U2U-03LRH
0402 size TSLP-3
1x0.6x0.39mm
5.3V
±20kV
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
ESD5V3U2U-03F
TSFP-3 leaded
1.2x1.2x.0.55mm
5.3V
±20kV
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
Click HERE to see protection recommendations for the VCC line
Want to know more? → read AN140
26.04.2012
Page 10
High Speed Interfaces
USB2.0 Dual Ports
WARNING
Every time the device is
connected or disconnected, the
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+, D1-, D2+, D2- and Vcc.

Array devices for multi-line protection are preferred in space-constrained applications.
26.04.2012
Page 11
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.
Part Name
Package
VRWM
VESD
EFT
Surge
RDYN
VCL
IR max
CL typ
I/O-GND
I/O-I/O
∆CL typ
50A
6A
0.3Ω
11.5V
100nA
0.45pF
0.23pF
0.02pF
0.01pF
I/O-GND
I/O-I/O
Multiline Array for 4 I/O lines + VCC protection (leaded)
ESD5V5U5ULC
26.04.2012
4- Line + Vcc
SC74
2.9x2.5x0.55mm
5.5V
±25kV
Page 12
High Speed Interfaces
USB3.0 Super Speed
WARNING
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 V CL , high VESD, and ultralow CL
26.04.2012
Page 13
High Speed Interfaces
(cont.)
USB3.0 Interface: Infineon Protection Option # 1
INFINEON ESD Protection Solution

Robust and long-term system level protection on multiple ESD strikes of up to ±20kV (IEC610004-2 contact discharge) without any signs of degradation.

Extremely low clamping voltage and fast response time at all levels of ESD make them the ESD
diodes of choice for protection of ultra-susceptible USB3.0 micro-controllers.

The ultralow capacitance and inductance prevent impedance mismatching from going out of
control while ensuring optimal signal integrity over a large variation in PCB qualities.

The flow-through design of the TSLP-9 package simplifies PCB layout. The package can be placed
on top of the high speed differential pairs to avoid complex vias or loops, facilitating PCB design.
Part Name
Package
VRWM
VESD
RDYN
VCL
IR
CL typ
I/O-GND
I/O-I/O
∆CL typ
0.23Ω
11V
50nA
0.40pF
0.20pF
0.02pF
0.01pF
0.6Ω
28V
<1nA
0.4pF
0.2pF
0.02pF
0.01pF
I/O-GND
I/O-I/O
Multiline Array for four I/O lines protection of the USB3.0 link (leadless)
ESD3V3U4ULC
1 device protects the
complete USB3.0 link
Flow-through
4-I/O Line
TSLP-9
2.3x1.0x0.31mm
3.3V
±20kV
Multiline Array for four I/O lines + Vcc protection of the USB2.0 link (leadless)
ESD5V3U4U-HDMI
1 device protects the
complete USB2.0 + Vcc link.
Flow-through
4-I/O line
TSLP-9
2.3x1.0x0.31mm
5.3V
±20kV
Want to see an example? → see next page!
26.04.2012
Page 14
High Speed Interfaces
(cont.)
PCB Layout for USB3.0 Standard Connector “A”
Example with 1x ESD3V3U4ULC (USB3.0) and 1 x ESD5V3U4U-HDMI (USB2.0 + Vcc)
for optimized PCB layout
VBus
9
GND
1
StdA_SSTX+
ESD5V3U4U-HDMI
for the USB2.0 Link
Including Vcc
8
StdA_SSTX-
2
GND
D-
7
3
GND
D+
StdA_SSRX+
6
StdA_SSRX-
ESD3V3U4U-LC
for the USB3.0 Link
4
5
GND
26.04.2012
Want to know more? → see next page!
Page 15
High Speed Interfaces
(cont.)
PCB Layout for USB3.0 Micro Connector
Example for an optimized PCB layout using ESD3V3U4ULC (USB3.0) and ESD5V3U4UHDMI (USB2.0 + Vcc)
Z_diff: 90 Ohm
PCB line dimensions relevant to a
copper height=0.2mm above the
PCB dielectric material
g=250um
Skinny Traces
w=150...200um
26.04.2012
1 x ESD5V3U4U-HDMI
for the full USB2.0 Link
Including Vcc
w=300um
Differential
coupled MS-line
Z_diff: 90 Ohm
Want to know more? → see next page!
1 x ESD3V3U4U-LC
for the full USB3.0 Link
Page 16
High Speed Interfaces
(cont.)
USB3.0 Interface: Infineon Protection Option # 2
INFINEON ESD Protection Solution

Robust and long-term system level protection on multiple ESD strikes of up to ±20kV (IEC610004-2 contact discharge) without any signs of degradation.

The ultralow capacitance and inductance prevent impedance mismatching from going out of
control while ensuring optimal signal integrity over a large variation in PCB qualities.

The flow-through design of the TSLP-9-1 package simplifies PCB layout. The array can be placed
on top of the high speed differential pairs to avoid complex vias or loops, facilitating PCB design.
The leaded TSFP-3 package provides a cost-effective solution for the protection of the USB2.0 link.
Part Name
Package
VRWM
VESD
CL typ
∆CL typ
I/O-GND
I/O-I/O
I/O-GND
I/O-I/O
RDYN
VCL
IR
0.23Ω
11V
50nA
0.40pF
0.20pF
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
Multiline Array for four I/O lines protection of USB3.0 link (leadless)
ESD3V3U4ULC
1 device protects the
complete USB3.0 link
Flow-through
4-I/O Line
TSLP-9
2.3x1.0x0.31mm
3.3V
±20kV
0.02pF
0.01pF
Multiline line array for 2 lines protection of USB2.0 Link (leaded)
ESD5V3U2U-03F
Protects USB2.0 Link
TSFP-3 leaded
1.2x1.2x.0.55mm
5.3V
±20kV
n.a.
Click HERE to see protection recommendations for the VCC line
Want to know more? → see next page!
26.04.2012
Page 17
High Speed Interfaces
(cont.)
PCB Layout for USB3.0 Standard Connector “A”
Example with 1 x ESD3V3U4ULC (USB3.0), 1 x ESD5V3U2U-03F (USB2.0),
and 1 x ESD5V3L1B-Series (Vcc)
1 x ESD5V3U2U-03F
USB2.0 Link
Identical line-length is
imperative for TX-/TX+ and for
RX+/RX- to minimize skew
1 x ESD5V3L1BVcc
ESD3V3U4ULC
USB3.0 Link
Want to know more? → read AN240!
26.04.2012
14.05.2012
Page 18
High Speed Interfaces
HDMI1.3 and HDMI1.4a
WARNING
CDE (Cable Discharge Event) occurs when a charged cable is
plugged into its receptacle and a high-voltage pulse is
transferred to the internal circuit trough the HDMI port !
Application Requirements

HDMI uses small CMOS geometries
to increase data rate performance.
The small geometries of these graphic
chips make them highly susceptible to
ESD.

Another common threat when
plugging and unplugging cables are
Cable Discharge Events (CDE).
Common practice in the industry is to
test CDE to the IEC61000-4-2
standard.

ESD protection is required on all
differential pairs and Vcc.

The signal voltage levels vary
between 2.5V and 3.5V, and Vcc=5V.

Maximum data rate is 3.4Gb/s per
pair. Some common ESD solutions
cause signal distortion due to high
capacitance resulting in poor signal
integrity and video quality.
+5V
HDMI Type A
Connector
HDMI Source/Sink
1
TMDS Data2
2
High-Speed
ESD protection
4
5
TMDS Data1
6
TMDS Channels
7
8
TMDS Data0
High-Speed
ESD protection
9
10
11
TMDS Clock
12
CEC
13
CEC Line
SCL
14
N.C.
SDA
ESD protection
communication
channel
(Low-Speed)
Hot Plug Detect
ESD protection
supply Voltage Vcc
26.04.2012
3
15
16
DDC (I²C Bus)
17
DDC/CEC GND
18
+5V
19
Hot Plug Detect
Page 19
High Speed Interfaces
(cont.)
HDMI 1.3 / 1.4
INFINEON ESD Protection Solution

Infineon offers a complete portfolio of ultralow capacitance ESD diodes specified to absorb ESD
events of up to ±20kV, exceeding IEC61000-4-2 market‟s standard.

Infineon ultralow capacitance supports perfect signal integrity in the HDMI Compliance
Specification Testing (CST) and enables great design flexibility regardless of PCB quality.

Common mode chokes for impedance matching can be eliminated in most cases. If tighter
tolerances must be met, capacitance compensation can be implemented by simply using thinner
traces [Refer to AN140 for more details].
Part Name
Package
VRWM
VESD
RDYN
VCL
Multiline Array option for four I/O lines protection of HDMI Lines (leadless)
Flow-through
4-I/O line
ESD5V3U4U-HDMI
5.3V
±20kV
0.6Ω
28V
TSLP-9
2.3x1.0x0.31mm
Multiline Array options for two I/O lines protection of HDMI lines (leadless or leaded)
TSLP-2 (0402)
ESD5V3U2U-03LRH
5.3V
±20kV
0.6Ω
28V
1x0.6x0.39mm
ESD5V3U2U-03F
TSFP-3
1.2x1.2x.0.55mm
5.3V
±20kV
0.6Ω
28V
IR
CL typ
I/O-GND
I/O-I/O
∆CL typ
<1nA
0.4pF
0.2pF
0.02pF
0.01pF
50nA
0.4pFtyp
0.6pFmax
n.a.
50nA
0.4pFtyp
0.6pFmax
n.a.
I/O-GND
I/O-I/O
Click HERE to see protection recommendations for the VCC line
Want to know more? → see next page!
26.04.2012
Page 20
High Speed Interfaces (cont.)
HDMI PCB Layout Example with Leadless 0402 Array
Example with 1 x ESD5V3U2U-03LRH small 0402 package per differential pair
Inductive compensation
for IFX - ESD5V3U2U-03LRH
w_comp = 0.15mm
L1/L2 =~2mm
Pitch: 0.5mm
L2
100 Ohm differential lines
12
GND_via
11
TVS Diode
w_comp
10
g1_comp
9
8
TVS Diode
TMDS
clock
Pitch:
0.5mm
100 Ohm differential lines
g2_comp
W_pad=0.25 mm
HDMI Receptacle
type „A“ landing pads
L1
100 Ohm differential lines:
FR4:er=4.4, h=0.2mm
w=0.25mm, gap=0.25mm
TMDS 0
7
100 Ohm differential lines
6
5
TMDS 1
TVS Diode
4
Data 2-
100 Ohm differential lines
3
Data shield 2
2
Data 2+
1
TVS Diode
TVS Diode: IFX
TMDS 2
ESD5V3U2U-03LRH in TSLP-3-7
Compensation
of receptable
capacity
possible is possible.
Compensation
of the HDMI
receptacleand
anddiode
the diode
capacitance
Very
TDR results
Very good TDR results
aregood
achievable.
PCBachievable
requirement: W_min~0.15mm;
PCB requirement:
W_min~0.15mm
Gap between diode GND
and data+ and
data- of ~0.120mm, can be relaxed to
gap
between
Diode
GND
and
data+
and
data-:
~0.120
mm!, can bearea.
relaxed to
~0.16mm by shifting data + and data- line
at the
compensation
~0.16mm by shifting data+ and data- line @ compensation area
26.04.2012
1x0.6x0.31mm
Want to know more?
→ see next page!
Page 21
High Speed Interfaces (cont.)
HDMI PCB Layout Example with TSFP Array
Example with 1 x ESD5V3U2U-03F TSFP package (1.2x1.2x0.55m) per differential pair
Inductive compensation
for IFX - ESD5V3U2U-03F
w_comp = 0.15mm
L1/L2 =~2mm
HDMI Receptacle
type „A“ landing pads
Pitch: 0.5mm
L1
12
100 Ohm differential lines:
FR4:er=4.4, h=0.2mm
w=0.25mm, gap=0.25mm
L2
100 Ohm differential lines
GND_via
TVS Diode
11
w_comp
10
8
TVS Diode
g2_comp
W_pad=0.25 mm
g1_comp
9
TMDS
clock
Pitch:
0.5mm
100 Ohm differential lines
1.2x1.2x0.55mm
TMDS 0
7
100 Ohm differential lines
6
5
TMDS 1
TVS Diode
4
Data 2-
100 Ohm differential lines
3
Data shield 2
2
Data 2+
1
TVS Diode
TVS Diode: IFX
ESD5V3U2U-03F in TSFP-3
Compensation
of receptable
and
diode
possible is possible.
Compensation
of the HDMI
receptacle
and
the capacity
diode capacitance
Veryare
good
TDR results
achievable
Very good TDR results
achievable.
PCB
requirement: W_min~0.15mm.
TMDS 2
Want to know more?
(e.g TDR fundamentals)
→ read AN140!
PCB requirement: W_min~0.15mm
26.04.2012
Page 22
High Speed Interfaces
MHL Interface
USB PHY
ID
High Speed
TVS diode
DPDT
Switch
MHL D+
MHL D-
MHL PHY
USB/MHL D+
USB/MHL DHigh Speed
TVS diode
VBUS
MICRO USB
USB D+
USB D-
50 Million MHL products were
shipped globally in 2011
Source: MHL Consortium
 Application Requirements
 The Mobile High-Definition Link (MHL) is a mobile audio/video interface that uses the existing
Micro USB connector with an extra cable for directly connecting mobile phones, digital cameras and
other portable devices to the HDMI port of High-Definition Televisions (HDTV) and Displays.
 The MHL standard features a single cable with a low pin-count interface able to support
high-definition video and digital audio while simultaneously charging the connected device.
 A data rate ̴2Gbps for transmission of 1080i/60 signal is required in broadcast applications.
 Assuming no external charging capability, the MHL signaling voltage is ≤3Vpeak.
26.04.2012
Page 23
High Speed Interfaces
(cont.)
MHL Interface
INFINEON ESD Protection Solution
 ESD5V3U4U-HDMI is designed to reduce ESD events of up to ±20kV to very low clamping
voltages.
 Infineon ultralow capacitance supports perfect signal integrity in MHL applications and enables
great design flexibility regardless of PCB quality.

One device ESD3V3U4ULC can protect the entire MHL link including Vcc.
 Very low leakage current contributes to extend battery‟s life in portable applications e.g.
handsets .
Part Name
Package
VRWM
VESD
RDYN
VCL
IR
±20kV
0.23Ω
11V
50nA
CL typ
I/O-GND
I/O-I/O
∆CL typ
I/O-GND
I/O-I/O
Multiline Array for four I/O lines protection (leadless)
ESD3V3U4ULC
1 device protects the
complete USB3.0 link
26.04.2012
Flow-through
4-I/O Line
TSLP-9
2.3x1.0x0.31mm
3.3V
0.40pF
0.20pF
0.02pF
0.01pF
Page 24
High Speed Interfaces
DisplayPort
WARNING
The VESA Display Port
standard specifies all
exposed pins to
withstand Level 4
IEC61000-4-2 (±15kV
air, ±8kV contact)
without any damage!
+3.3V
DisplayPort
Connector
Display Port
Source/(Sink)
1
ML_Lane 0/(3)
2
High-Speed
ESD protection
3
4
5
6
ML_Lane 1/(2)
7
8
ML_Lane 2/(1)
High-Speed
ESD protection
ML_Lanes 0...3
TMDS Channels
Application Requirements

Hot-plugging features: users can
connect any source equipment while
at least one of the applications is
still running. Such a powered port
may be affected by serious ESD
issues.

Data speeds up to 5Gb/s per pair
requires dedicated protection
components with minimized
parasitic effects to ensure signal
integrity for low BER.

The signal voltage varies between
2.5V and 3.5V, and Vcc=3.3V.
9
10
11
ML_Lane 3/(0)
12
Config1
Config2
AUX_pos
Communication
channel
(Low-Speed)
ESD protection
AUX_neg
Hot Plug Detect
ESD protection
supply Voltage Vcc
26.04.2012
13
Config1
14
Config2
15
AUX_pos
16
GND
17
AUX_neg
18
Hot Plug Detect
19
Return DP_PWR
20
Power +3.3V
Page 25
High Speed Interfaces
(cont.)
DisplayPort
INFINEON ESD Protection Solution

Infineon offers a complete portfolio of ultralow capacitance ESD diodes specified to absorb ESD
events of up to ±20kV, exceeding the IEC61000-4-2 industry standard.

Infineon‟s ultralow capacitance ESD diodes support perfect signal integrity in the Display
Compliance Specification Testing (CST) and enables great design flexibility regardless of PCB quality.

Common mode chokes for impedance matching can be eliminated in most cases. If tighter
tolerances must be met, capacitance compensation can be implemented by simply using thinner
traces [Refer to AN140 for more details].
Part Name
Package
VRWM
VESD
RDYN
VCL
IR
CL typ
I/O-GND
I/O-I/O
∆CL typ
28V
<1nA
0.4pF
0.2pF
0.02pF
0.01pF
I/O-GND
I/O-I/O
Multiline Array option for four I/O lines protection of Display Port lines (leadless)
ESD5V3U4U-HDMI
Flow-through
4-I/O line
TSLP-9
2.3x1.0x0.31mm
5.3V
±20kV
0.6Ω
Multiline Array option for two I/O lines protection of Display Port lines (leadless or leaded)
ESD5V3U2U-03LRH
0402 size
TSLP-2
1x0.6x0.39mm
5.3V
±20kV
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
n.a.
ESD5V3U2U-03F
TSFP-3
1.2x1.2x.0.55mm
5.3V
±20kV
0.6Ω
28V
50nA
0.4pFtyp
0.6pFmax
n.a.
Click HERE to see protection recommendations for the VCC line
26.04.2012
Page 26
High Speed Interfaces
Serial ATA 3GBps and 6GBps
WARNING
User‟s routine interaction
with these interfaces
exposes the IC/ASIC to
dangerous ESD!
Application Requirements

Serial ATA supports data rates of 3GBps and 6GBps with a DC blocking design and a minimum
voltage swing requirement of Vpp = 400mV.

SATA voltage swing can rise to 700mV, and in dedicated SATA II mode, the peak voltage can
rise to 1600mV (on one line the signal is +800mV vs. GND and on the other line it is -800mV).
The DC level of data lines at the connector is floating.

In this configuration, bi-directional ESD diodes are mandatory.

Normal location for ESD diodes would be between the blocking capacitors (~10nF) and the
connector to keep the blocking capacitor safe from ESD.

Ultralow capacitance components are compulsory to maintain the signal integrity at the high
data transmission rates of Serial ATA interfaces.
26.04.2012
Page 27
High Speed Interfaces
Serial ATA 3GBps and 6GBps
INFINEON ESD Protection Solution

In designs equipped with SATA or eSATA interfaces Infineon recommends its bidirectional TVS
diodes featuring ultralow capacitance and high ESD absorption capabilities.

ESD0P2RF with only 0.2pF provides robust absorption capability of at least ±20kV (IEC61000-42) without effects on the signal integrity of the high speed data transmission lines.

The diode offers symmetrical and low clamping voltage of 29V (for 8kV contact discharge).
Part Name
VRWM
VESD
RDYN
VCL
IR max
CL
ESD0P2RF-02LS
1-line
0201 size
TSSLP-2
0.6x0.3x0.31mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
ESD0P2RF-02LRH
1-line
0402 size
TSLP-2
1.0x0.6x0.39mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
26.04.2012
Package
Page 28
High Speed Interfaces
Gigabit Ethernet
1:1
WARNING
The small geometries of Ethernet PHY chips are very
susceptible to transients and require high quality
protection against ESD and surges!
6
2
5
Res
Res
Quad
Transformer
Ethernet cable
Twisted Pair
1:1
RJ45
Ethernet connector
1:1
Gigabit Ethernet Transceiver (PHY)
4
3
Ethernet cable
Twisted Pair
1
TVS3V3L4U
1:1
Application Requirements
1:1

Gigabit Ethernet operates transmitting
and receiving data on four twisted cable
pairs.

The data signal voltage varies between
1.0V (100 and 1000Base) & 2.5V (10Base
Ethernet).

The data rates are 125Mb/s (100 and
1000 Base) and 12.5Mb/s (10 Base
Ethernet).

ESD robustness is required on both sides
of the transformer.
Res
5
2
4
3
Res
Ethernet cable
Twisted Pair
6
1
TVS3V3L4U
1:1
1:1
1:1
26.04.2012
Page 29
High Speed Interfaces
(cont.)
Gigabit Ethernet
INFINEON ESD Protection Solution

Infineon TVS3V3L4U array on the secondary side of the transformer is recommended for
protection of the Gigabit-Ethernet link. TVS3V3L4U is back guard compatible with 10 and 100Base
Ethernet.

TVS3V3L4U efficiently clamps ESD strikes and any surge that is coupled through the transformer
to a safe and stable level for the downstream circuit.

The low capacitance of this diode makes it suitable for efficient protection of Gigabit Ethernet
without causing signal distortion issues at high data transmission rates.

The complete Gigabit-Ethernet link can be protected with only 2 x TVS3V3L4U, which are available
in a cost-effective SC74 package.
Part Name
TVS3V3L4U
26.04.2012
Package
4- Line
SC74
2.9x2.5x0.55mm
VRWM
VESD
EFT
Surge
RDYN
VCL
IR
CL
3.3V
±30kV
80A
20A
0.1Ω
6V
<50nA
2.9pFtyp
Page 30
High Speed Interfaces
(cont.)
PCB Layout Proposal for Gigabit Ethernet
TVS3V3L4U
ESD/Surge Protector
Magnetic module
RJ45 socket
8 times 0 Ohm bridges
Secondary (Gbit PHY)
frontend side
26.04.2012
Primary (RJ45)
frontend side
2.9x2.5x0.55mm
Including leads
High Speed Interfaces
VDSL, ADSL & other Broadband Applications
Vcc
TIP
4
2
3
WARNING
Primary
Protection
DSL
Line Driver
Secondary protection is required to
further reduce surge voltages and
currents to tolerable levels for the
equipment being protected !
DSL70
1
RING
Application Requirements
 Wire line telecom systems are vulnerable to ESD, surge and cable discharge events and therefore
subject to strict regulatory compliance to ensure system reliability.
 Primary protection is typically implemented where the outside line enters a structure, and
secondary protection is applied to the equipment itself (see picture).
 The system is usually required to pass surge, power contact and power induction tests
according to the ITU K20/21 telecommunication standard.
 The high-speed lines on the secondary side of the transformer demand protection devices with low
capacitance to avoid signal distortion on the line.
26.04.2012
Page 32
High Speed Interfaces
(cont.)
xDSL (ADSL, VDSL..)
 DSL70 – INFINEON’s ESD Protection Solution for xDSL
 Optimized to provide secondary protection on xDSL lines either at the central office or the
subscriber side.
 Supports system compliance with telecom regulatory requirements including surge, power
induction or power contact tests according to ITU K20/21.
 Overtakes competition by offering almost two times higher ESD absorption capability than
competitor devices in the same package.
 Capacitance is 50% below the capacitance offered by the next alternative existing in the market.
 SOT143 (SC-61A) industry standard package.
Part Name
DSL70
[1]
Package
2- Line
SOT143
2.9x2.4x1mm
VRWM
VESD
EFT
Surge
RDYN
VCL
IR
CL
50V [1]
±15kV
80A
27A
0.1Ω
4V+Vcc
<5nA
2.5pFtyp
Rail to rail configuration
Want to know more? → read the Surge & Burst Report!
26.04.2012
Page 33
Antenna Protection
Global Positioning System (GPS)
WARNING
For any antenna exposed to the
outside world, ESD is a
continuous threat to device
reliability !
Example : Antenna Protection in Global Navigation Satellite System (GNSS) Application
Application Requirements
Due to the high operating frequencies >1.5GHz, the ESD protection capacitance must be <<1pF.
The protection device needs to be as linear as possible to avoid unwanted harmonics and
intermodulation distortion in the presence of a strong RF interferer.
To keep the residual ESD stress minimized for the frontend system, the protection device should
have as low of a clamping voltage as possible.
Small package sizes are favored to allow integration into miniaturized modules and frontend systems.
26.04.2012
Page 34
Antenna Protection
Global Positioning System (GPS)
INFINEON ESD Protection Solution

The ESD0P2RF diode is tailored for ESD protection for various kinds of antenna systems in the
low and medium power range. Its bidirectional characteristics enable it to handle AC coupled
signals without clipping or distorting the RF signal, expanding its range of applications.

The diode respond to ESD by quickly clamping the transient to only 29V for an 8kV strike
(IEC61000-4-2).

With only 0.2pF parasitic capacitance it enables high RF signal integrity with maximum ESD
protection and without degradation effects from multiple strikes.

The leakage current of the diode in normal operating conditions (5.3V max) does not exceed
50nA max. making it ideal for battery-powered applications.

The miniature packages allow drastic space savings on PCBs and integration into miniaturized
modules and frontend systems.
Part Name
Package
VRWM
VESD
RDYN
VCL
IR max
CL
ESD0P2RF-02LS
1-line
0201 size
TSSLP-2
0.6x0.3x0.31mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
ESD0P2RF-02LRH
1-line
0402 size
TSLP-2
1.0x0.6x0.39mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
Want to know more? → read AN178!
26.04.2012
Page 35
Antenna Protection
FM Radio
WARNING
For any antenna exposed to the
outside world, ESD is a
continuous threat to device
reliability !
Example: ESD Protection in a
FM Radio Application with an
Embedded Antenna
Application Requirements
 FM radio is a standard feature in most modern mobile phones and operates at frequencies from
76MHz to 108Mhz with an antenna power range of ≤20dBm.
 A protection circuit is necessary at the antenna to protect the delicate frontend system from ESD
events originating during routine use.
 The protection device needs to have bidirectional characteristics and breakdown voltage from
5V to 10V to handle the DC free signal without clipping.
 Small package sizes are required to allow easier integration into miniaturized modules and
frontend systems.
26.04.2012
Page 36
Antenna Protection
FM Radio
INFINEON ESD Protection Solution

The ESD0P2RF diode is tailored for ESD protection of various kinds of antenna systems in the
low and medium power range. Its bidirectional characteristics enable it to handle AC coupled
signals without clipping or distorting the RF signal, expanding its range of applications.

The diodes respond to ESD by quickly clamping the transient down to only 29V for an 8kV strike
(IEC61000-4-2).

With only 0.2pF parasitic capacitance it enables high RF signal integrity with a maximum of ESD
protection without degradation effects.

The leakage current of the diode in normal operating conditions (5.3V max) does not exceed
50nA max., favoring its application in battery-powered devices.

The miniature packages allow drastic space savings on PCBs and integration into miniaturized
modules and frontend systems.
Part Name
VRWM
VESD
RDYN
VCL
IR max
CL
ESD0P2RF-02LS
1-line
0201 size
TSSLP-2
0.6x0.3x0.31mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
ESD0P2RF-02LRH
1-line
0402 size
TSLP-2
1.0x0.6x0.39mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
26.04.2012
Package
Page 37
Antenna Protection
Mobile TV
Analog TV/DVB-T/CMMB
T-DMB/ISDB-T/DVB-H
40 - 860MHz
WARNING
Silicon-Tuner
ESD
Diode
GSM
Rejection
LNA
For any antenna exposed to the
outside world, electrostatic
discharges are a continuous
threat to device reliability !
Diplexer
Example: Antenna Protection in Mobile TV Application
Application Requirements
Receivers for wireless broadcasting services use frequency bands from 170MHz to 1.7GHz
(reference list above). The signal lines are AC coupled and operate at low RF signal levels.
To protect the delicate downstream IC/ASIC, fast-clamping protection devices are required
immediately after the antenna.
Due to the high operating frequencies protection components with extremely low capacitance and
high linearity are required.
26.04.2012
Page 38
Antenna Protection
Mobile TV
INFINEON ESD Protection Solution

The ESD0P2RF diode series is tailored for ESD protection of various kinds of antenna systems in
the low and medium power range. Its bidirectional characteristics enable it to handle AC coupled
signals without clipping or distorting the RF signal, expanding its range of applications.

The diodes respond to ESD by quickly clamping the transient to only 29V for an 8kV strike
(IEC61000-4-2).

With only 0.2pF parasitic capacitance it enables high RF signal integrity with a maximum of ESD
protection without degradation effects.

The leakage current of the diode in normal operating conditions (5.3V max) does not exceed
50nA max., favoring its application in battery-powered devices.

The miniature packages allow drastic space savings on PCBs and integration into miniaturized
modules and frontend systems.
Part Name
Package
VRWM
VESD
RDYN
VCL
IR max
CL
ESD0P2RF-02LS
1-line
0201 size
TSSLP-2
0.6x0.3x0.31mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
ESD0P2RF-02LRH
1-line
0402 size
TSLP-2
1.0x0.6x0.39mm
±5.3V
±20kV
1.0Ω
29V
50nA
0.2pFtyp
0.4pFmax
Want to know more? → read AN167!
26.04.2012
Page 39
ESD Protection
Vcc Lines
INFINEON ESD Protection Solution

Infineon offers a variety of general purpose diodes tailored for protection of power lines.

The diodes offer very robust ESD absorption capability, exceeding the IEC61000-4-2 industry
standard, and help 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.

The leakage current of the diode in normal operating conditions does not exceed 100nA max.,
favoring its application in battery-powered devices.

These diodes are available in leadless packages with sizes down to 0.6 x 0.4 mm for maximum
protection in the smallest area.
Part Name
Package
VRWM
VESD
RDYN
VCL
IR max
CL
1-Line
TSSLP-2 (0201)
0.6x0.3x0.31mm
-8/14V
±15kV
0.7Ω
<30V
50nA
4pFtyp
±5.3V
±20kV
0.22Ω
17V
100nA
4pFmin
1-Line
TSLP-2 (0402)
1x0.6x0.39mm
±3.3V
±15kV
0.7Ω
<30V
50nA
4pFtyp
±5.3V
±20kV
0.22Ω
17V
100A
4pFmin
±5.0V
±25kV
0.3Ω
22V
50nA
8.5pF
Single Line Diode options for Vcc Protection (leadless)
ESD8V0R1B-02LS
ESD5V3L1B-02LS
ESD8V0R1B-02LRH
ESD5V3L1B-02LRH
Single Line Diode options for Vcc Protection (leaded)
ESD5V0L1B-02V
26.04.2012
1-Line
SC79
1.6x0.8x0.55mm
Page 40
Want to know more?
check www.infineon.com/tvsdiodes !
 TVS Diode Data Sheets: www.infineon.com/tvsdiodes
 Simulation Models www.infineon.com/ESDSimulationModels
 Application Guide for Protection (Brochure): www.infineon.com/rpd_appguide_protection
 Sample Kit: “Fast and Indestructible ESD Protection for Your Electronic System”
 Application Notes www.infineon.com/tvs.appnotes
 AN140 “ESD Protection for Digital High-Speed Interfaces (HDMI etc) using ESD5V3U1U”
 AN178 “ESD Protection for RF Antennas using Infineon ESD0P4RFL and ESD0P2RF
 AN167 “ESD Protection for Broadband LNA BGA728L7 for Portable and Mobile TV”
 AN210 “Effective ESD Protection Design at System Level using VF-TLP Characterization”
 AN240 “Effective ESD Protection for USB3.0 combined with perfect signal integrity”
 AN277 “General Purpose and Audio ESD Protection using ESD5V3L1b and ESD3V3S1B Diodes”
 Further Literature
 “Selecting Protection Devices: TVS Diodes vs. Metal-Oxide Varistors” by Steven Goldman, Power
Electronics Magazine, p.29, 2010., under www.infineon.com/tvsdiodes
 “ Recommendations for PCB Assembly of Infineon TSLP and TSSLP Packages”, Infineon Manual,
under www.infineon.com/tvsdiodes
26.04.2012
Page 41
Legal Disclaimer
 The information given in this document shall in no event be regarded as a guarantee of
conditions or characteristics. With respect to any examples or hints given herein, any typical
values stated herein and/or any information regarding the application of the devices,
Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind,
including without limitation, warranties of non-infringement of intellectual property rights of
any third party. For further information on technology, delivery terms and conditions and
prices, please contact the nearest Infineon Technologies Office (www.infineon.com).
 Due to technical requirements, components may contain dangerous substances. For
information on the types in question, please contact the nearest Infineon Technologies
Office.
 Infineon Technologies components may be used in life-support devices or systems only with
the express written approval of Infineon Technologies, if a failure of such components can
reasonably be expected to cause the failure of that life-support device or system or to affect
the safety or effectiveness of that device or system. Life support devices or systems are
intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user
or other persons may be endangered.
26.04.2012
Copyright © Infineon Technologies 2012. All rights reserved.
Page 42