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USB Type-C™ port protector: short-to-Vbus overvoltage, IEC ESD protection and surge protection

US ECCN: EAR99 US/Local Export Classification Number

Quality information

RoHS Yes
Lead finish / Ball material Call TI
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
DSBGA (YBF) | 16 3,000 | LARGE T&R -40 to 85
Package | Pins DSBGA (YBF) | 16
Package qty | Carrier: 3,000 | LARGE T&R
Operating temperature range (°C) -40 to 85
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Features for the TPD4S311A

  • 4-Channels of Short-to-VBUS overvoltage protection (CC1, CC2, SBU1, SBU2 ): 24-VDC tolerant
  • 4-Channels of IEC 61000-4-2 ESD protection (CC1, CC2, SBU1, SBU2)
  • CC1 and CC2 overvoltage protection FETs for passing VCONN power
    • 400-mA VCONN power (TPD4S311)
    • 600-mA VCONN power (TPD4S311A)
  • ±35-V surge protection on CC pins (TPD4S311A)
  • ±30-V surge protection on SBU pins (TPD4S311A)
  • CC dead battery resistors integrated for handling dead battery use case in mobile devices
  • 1.69-mm × 1.69-mm DSBGA package

Description for the TPD4S311A

The TPD4S311 is a single-chip USB Type-C port protection device that provides 20-V Short-to-VBUS overvoltage and IEC ESD protection.

Since the release of the USB Type-C connector, many products and accessories for USB Type-C have been released that do not meet the USB Type-C specification. One example of this is USB Type-C Power Delivery adaptors that only place 20 V on the VBUS line. Another concern for USB Type-C is that mechanical twisting and sliding of the connector could short pins due to the close proximity they have in this small connector. This can cause 20-V VBUS to be shorted to the CC and SBU pins. Also due to the proximity of the pins in the Type-C connector, there is a heightened concern that debris and moisture will cause the 20-V VBUS pin to be shorted to the CC and SBU pins.

These non-ideal equipments and mechanical events make it necessary for the CC and SBU pins to be 20-V tolerant, even though the pins only operate at 5 V or lower. The TPD4S311 enables the CC and SBU pins to be 20-V tolerant without interfering with normal operation by providing over-voltage protection on the CC and SBU pins. The device places high voltage FETs in series on the SBU and CC lines. When a voltage above the OVP threshold is detected on these lines, the high voltage switches are opened up, isolating the rest of the system from the high voltage condition present on the connector.

Finally, most systems require IEC 61000-4-2 system level ESD protection for external pins. The TPD4S311 integrates IEC 61000-4-2 ESD protection for the CC1, CC2, SBU1, and SBU2 pins, eliminating the need to place high voltage TVS diodes externally on the connector.


Qty Price (USD)
1-99 1.232
100-249 1.018
250-999 0.731
1,000+ 0.55