1 Features

• 4-channels of short-to-VBUS overvoltage protection

(CC1, CC2, SBU1, SBU2): 28VDC tolerant

• 4-channels of IEC 61000-4-2 ESD protection

(CC1, CC2, SBU1, SBU2)

• CC1 and CC2 overvoltage protection FETs for

passing VCONN power

• ± 35V surge protection on CC pins

• ± 35V surge protection on SBU pins

• CC dead battery resistors integrated for handling

dead battery use case

2 Applications

• Desktop PC/motherboard

• Standard notebook PC

• Chromebook and WOA

• Docking station

• Port/cable adapters and dongles

• Smartphones

3 Description

The TPD4S201 is a single-chip USB Type-C port

protection device that provides 28V 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. Another concern for USB Type-C is

that mechanical twisting and sliding of the connector

shorting pins due to the close proximity they have

in this small connector. This mechanical twisting

nad sliding of the connector causes 28V VBUS to

be shorted to the CC and SBU pins. Due to the

proximity of the pins in the Type-C connector, there

is a heightened concern of a short to the CC, SBU or

USB2 pin to the the 28V VBUS pin caused by debris

and moisure.

These non-ideal equipments and mechanical events

make it necessary for the CC and other pins to be

28V tolerant, even though the pins only operate at 5V

or lower. The TPD4S201 enables the CC and SBU or

USB2 pins to be 28V tolerant without interfering with

normal operation by providing overvoltage protection

on the CC and SBU pins. The device places high

voltage FETs in series on the SBU and CC lines.

For systems not using alternate modes with SBU

communication, the SBU pins of the TPD4S201 are

available for to protect the USB2 data lines instead.

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 TPD4S201

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.