TI TPD4S311YBFR

The TPD4S311 is a single-chip USB Type-C port protection device that provides 20V VBUS short-circuit overvoltage protection and IEC ESD protection. Since the release of the USB Type-C connector, many USB Type-C products and accessories that do not meet the USB Type-C specifications have been launched on the market. One example is a USB Type-C power delivery adapter that only applies 20V voltage on the VBUS line. Another issue with USB Type-C is that due to the extremely close proximity of the pins in this small connector, mechanical torsion and sliding of the connector may cause the pins to short-circuit. This may lead to a short circuit between the 20V VBUS and the CC and SBU pins. Additionally, because the pins in the Type-C connector are very close to each other, there is a serious problem of debris and moisture causing a short circuit between the 20V VBUS pin and the CC and SBU pins. These non-ideal devices and mechanical events require that the CC and SBU pins must be able to withstand 20V voltage, even though these pins only operate at 5V or lower. By providing overvoltage protection on the CC and SBU pins, the TPD4S311 enables the CC and SBU pins to tolerate 20V voltage without interfering with normal operation. The device places high-voltage FETs in series on the SBU and CC lines. When a voltage higher than the OVP threshold is detected on these lines, the high-voltage switch is turned on, isolating the rest of the system from the high-voltage state present on the connector. Finally, most systems require IEC61000-4-2 system-level ESD protection for their 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.

• 4-channel VBUS short-circuit overvoltage protection (CC1, CC2, SBU1, SBU2): withstands up to 24V DC
• 4-channel IEC 61000-4-2 ESD protection (CC1, CC2, SBU1, SBU2)
• CC1 and CC2 overvoltage protection FETs support VCONN pass-through current
• 400mA VCONN current (TPD4S311)
• 600mA VCONN current (TPD4S311A)
• ±35V surge protection on CC pins (TPD4S311A)
• ±30V surge protection on SBU pins (TPD4S311A)
• Integrated CC dead-battery resistors for handling dead-battery use cases in mobile devices
• 1.69mm x 1.69mm DSBGA package

• Desktop/Motherboard
• Standard Notebook
• Chromebook and WOA
• Docking Station
• Port/Cable Adapters and Dongles
• Smartphone