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Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
CIRCUIT
PROTECTION
SOLUTIONS
ESD Protection for USB 3.0 Ports
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
USB3.0 Protection Using TVS Diode Arrays (SPATM)
Two Device Solution
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Two Device Solution for USB3.0 Protection -ESD solutions are silicon-based for lowest possible clamping voltage
Signal GNDCase GND
USB Controller
USB Port
SP3003
Outside
World
Optional
SSTX+
SSTX-
SSRX+
SSRX-
GND
D+
D-
SP3010
ICNC
*Package is shown as transparent
VBUS
SP3010-04UTG - 0.45pF, 4 channels - 2.5mm x 1.0mm
SP3003-02XTG - 0.65pF, 2 channels - 1.6mm x 1.6mm
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
ESD Protection of Super Speed Data Lines -SP3010-04UTG; silicon-based technology -Capacitance value of 0.45pF
Key feature of the silicon technology: - Low dynamic resistance - Allows SPA product to have low clamping voltage
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
USB3.0 Protection Using TVS Diode Arrays (SPATM)
Fully Integrated Solution
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Fully Integrated Solution for ESD Protection-Silicon-based for lowest possible clamping voltage -Protection on all data lines is 0.40pF diodes
Signal GNDCase GND
USB Controller
USB Port
Outside
World
VBUS
SSTX+
SSTX-
SSRX+
SSRX-
GND
D+
D-
SP3011
IC
*Package is shown as transparent
SP3011-06UTG - 0.40pF, 6 channels - 3.5mm x 1.35mm
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
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
Key feature of the silicon technology: - Low dynamic resistance - Allows SPA product to have low clamping voltage
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Signal Integrity Test Boards
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
ESD Device• SP3011-06UTG USB Connector
Signal Integrity Test Boards-Verifying Eye Diagrams with 5Gbps data rates
USB Connector
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Test Setup-Board shown without the SP3011-06UTG
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Eye Diagram-Results without the SP3011-06UTG-PASS
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
Eye Diagram-Results with the SP3011-06UTG-PASS
Modified_010509
CIRCUIT PROTECTION
SOLUTIONS
Confidential and Proprietary to Littelfuse, Inc. ® Littelfuse, Inc. 2010. All rights reserved.
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
Summary- USB3.0 Protection using Littelfuse TVS Diode Arrays (SPATM)
