uPI TVS Solutions

Protection for Today’s High Speed Interfaces

Transient Voltage Suppressor Features

Single diodes and arrays

uPI offers an extensive portfolio of Transient Voltage Suppressors (TVS) with unique features to help protect sensitive circuitry.

TVS features


  • SnapBack – Proprietary cell clamping technology protects sensitive circuitry during transient over-voltage events on power or control data signals.

  • Low-capacitance maintains signal integrity during over-voltage events.
  • Application-specific package designs – USB Type-C, HDMI, DisplayPort™, etc.

EOS Armour

This technology is used in TVS Arrays when the maximum limit(s) for either Voltage across, current through, or the power dissipation rating of the device is exceeded, prevents immediate damage, latent damage, or malfunction.

TVS protection levels

  • Punch
  • Standard SnapBack
  • Deep Snapback


System Level ESD vs. Component Level ESD

Component level and system level ESD events have some distinct differences.

8kV HBM with a peak current of 5.33A, but 8kV IEC 61000-4-2 with a peak current of 30A

TVS for IC Protection



  1. Bypass the ESD event current
  2. Suppressing the ESD event voltage

TVS is connected in parallel to the protected IC. The TVS works to shunt the majority of the ESD current to ground, thereby minimizing the residual current to the IC and preventing malfunction.

When subjected to an ESD event, the TVS will clamp the peak voltage quickly as its dynamic resistance is much lower than that of the protected IC.

TVS for Video Applications

The HDMI connector requires ESD protection for all 12 data lines: eight low-voltage, high-speed TMDS lines and four 5V control lines. Ultra-low capacitance is needed to meet HDMI 2.1 specification.


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The DisplayPort™ connector requires ESD protection for all 12 data lines: eight low-voltage, high-speed TMDS lines and four control lines.



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DVI’s digital video transmission format is based on PanelLink™.  The digital interface is used to connect a video source to a display device and was developed with the intention of creating an industry standard.



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V-by-One HS is an electrical digital signaling standard that can run at 3.75 Gbit/s for each pair of an inexpensive twisted-pair copper cables.



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TVS for Data Port Applications

The USB connector requires ultra-low capacitance ESD protection for all six data lines (two low speed, four high speed) and power lines. Contact uPI representatives for information on legacy USB TVS support.


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1. USB 3.x

In the USB 3.x mode, two or four high speed links are used in TX/RX pairs to provide 5 to 20 Gbps throughput. One of the CC pins is used to negotiate the mode. VDD and GND provide 5 V up to 900 mA, in accordance with the USB 3.1 specification. A specific USB-C mode may also be entered, where 5 V up to 3 A is provided.

2. USB Power Delivery

USB Power Delivery uses the CC pins for power selection, up to 20 V and up to 5 A (or whatever less the source can provide). It is transparent to any data transmission mode and can therefore be used together with any of them.



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Thunderbolt is a hardware interface standard that allows the high- speed connection of external peripherals to a computer. Thunderbolt 1 and 2 use the same connector as Mini DisplayPort (MDP), whereas Thunderbolt 3 uses USB-C.



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TVS for Power Applications



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Request for Datasheet or Application Note:

Contact us for more product information:


T : +886-2-8751-2062
F : +886-2-8751-5064
E : taiwan@upi-semi.com

12F-5, No. 408, Ruiguang Rd., Neihu District Taipei 114, Taiwan R.O.C.


T : +86-755-86117456
F : +86-755-86022945
E : china@upi-semi.com

Room 908, Unit 4, Building A, Keyuan Road, Kexing Science Park, Nanshan District, Shenzhen China.


T : +82-2-6004-1305
F : +82-2-3450-1510
E : korea@upi-semi.com

4F, Haesung 1 building, 504, Teheran-ro, Gangnam-gu, Seoul, 06178, Korea.

North America

T : +1-360-350-0083
E : northamerica@upi-semi.com

600 Stewart Street Suite 400 Seattle, WA 98101 USA.