Protector device provides overvoltage and IEC ESD protection

The Texas Instruments TPD6S300A is a single-chip USB Type-C port protection device that gives 20V Short-to-VBUS overvoltage and IEC ESD protection. Many products and accessories for USB Type-C do not meet the USB Type-C specification. An example of this is USB Type-C Power Delivery adaptors that only place 20V on the VBUS line. An additional concern for this is that mechanical twisting and sliding of the connector can short pins because of the close proximity they have in this small connector. This can cause 20V VBUS to be shorted to the CC and SBU pins. Due to the proximity of the pins in the connector, there is a further concern that moisture and debris can cause the 20V VBUS pin to be shorted to the CC and SBU pins. This non-ideal equipment and mechanical events cause it to be necessary for the CC and SBU pins to be 20V tolerant, although the pins only operate at 5V or lower. The device allows the CC and SBU pins to be 20V tolerant with no interference in normal operation by offering overvoltage protection on the CC and SBU pins. The device puts high voltage FETs in series on the SBU and CC lines. When a voltage above the OVP threshold is identified on these lines, the high voltage switches are opened up, separating 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 device integrates IEC 61000-4-2 ESD protection for the CC1, CC2, SBU1, SBU2, DP, and DM pins, eliminating the need to place high voltage TVS diodes externally on the connector.