USB 3_0 Protection_SP3010_SP3011

Report
CIRCUIT
PROTECTION
SOLUTIONS
CIRCUIT
PROTECTION
SOLUTIONS
ESD Protection for USB 3.0 Ports
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
CIRCUIT
PROTECTION
SOLUTIONS
USB3.0 Protection Using TVS Diode Arrays (SPATM)
Two Device Solution
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Two Device Solution for USB3.0 Protection
-ESD solutions are silicon-based for lowest possible clamping voltage
USB Port
CIRCUIT
PROTECTION
SOLUTIONS
USB Controller
VBUS
D+
D-
SP3003-02XTG
SP3003
- 0.65pF, 2 channels
- 1.6mm x 1.6mm
Optional
NC
Outside
World
IC
SSTX+
SP3010-04UTG
SSTXGND
- 0.45pF, 4 channels
- 2.5mm x 1.0mm
SP3010
SSRX+
SSRX*Package is shown as transparent
Case GND
Signal GND
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
ESD Protection of Super Speed Data Lines
-SP3010-04UTG; silicon-based technology
-Capacitance value of 0.45pF
CIRCUIT
PROTECTION
SOLUTIONS
Key feature of the silicon technology:
- Low dynamic resistance
- Allows SPA product to have low clamping voltage
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
CIRCUIT
PROTECTION
SOLUTIONS
USB3.0 Protection Using TVS Diode Arrays (SPATM)
Fully Integrated Solution
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Fully Integrated Solution for ESD Protection
-Silicon-based for lowest possible clamping voltage
-Protection on all data lines is 0.40pF diodes
USB Port
CIRCUIT
PROTECTION
SOLUTIONS
USB Controller
VBUS
SSTX+
SSTXOutside
World
IC
SSRX+
SSRX-
GND
SP3011-06UTG
- 0.40pF, 6 channels
- 3.5mm x 1.35mm
SP3011
D+
D*Package is shown as transparent
Case GND
Signal GND
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
SP3011-06UTG
-Six-channel solution to protect all data lines in USB 3.0 port
-Uses same straight-through pin out to simplify board design
CIRCUIT
PROTECTION
SOLUTIONS
Key feature of the silicon technology:
- Low dynamic resistance
- Allows SPA product to have low clamping voltage
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
CIRCUIT
PROTECTION
SOLUTIONS
Signal Integrity Test Boards
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Signal Integrity Test Boards
-Verifying Eye Diagrams with 5Gbps data rates
CIRCUIT
PROTECTION
SOLUTIONS
USB Connector
ESD Device
• SP3011-06UTG
USB Connector
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Test Setup
-Board shown without the SP3011-06UTG
CIRCUIT
PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Eye Diagram
-Results without the SP3011-06UTG
-PASS
CIRCUIT
PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Eye Diagram
-Results with the SP3011-06UTG
-PASS
CIRCUIT
PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509
Summary
- USB3.0 Protection using Littelfuse TVS Diode Arrays (SPATM)
CIRCUIT
PROTECTION
SOLUTIONS
 Littelfuse has two protection schemes for a USB 3.0 port
 SP3010-04UTG & SP3003-02XTG
 SP3011-06UTG
 Eye diagram testing at 5Gbps proves compatibility with the Super Speed
environment
 Silicon technology offers the lowest clamping voltage compared to competing
technologies due to it’s lower dynamic resistance
 For more on USB3.0 Protection please read our white paper online at:

http://www.littelfuse.com/data/en/Application_Notes/Littelfuse-USB-3-ESD-Protection.pdf
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Modified_010509

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