USB 3_0 Protection_SP3010_SP3011
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Transcript USB 3_0 Protection_SP3010_SP3011
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