1 Features

• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following Results:

– Device Temperature Grade 2: -40°C to +105°C

Ambient Operating Temperature Range

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

(CC1, CC2, SBU1, SBU2): 63VDC tolerant

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

(CC1, CC2, SBU1, SBU2)

• CC1 and CC2 overvoltage protection FETs for

passing VCONN power

• ±65V surge protection on CC pins

• +65/-35V surge protection on SBU pins

• Integrated VBUS divider circuit with enable for

dividing down EPR level VBUS

• Integrated FET driver for control of external EPR

blocking FET

• CC dead battery resistors integrated for handling

dead battery use case

• 3.5mm x 3.5mm QFN package

2 Applications

• Automotive USB charging

• Automotive media hub

• Automotive head unit

• Automotive display module

3 Description

The TPD4S480-Q1 is a single-chip USB Type-C port

protection device that provides 48V 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 adapters that only place high voltage

on the VBUS line. Another concern for USB Type-C is

that mechanical twisting and sliding of the connector

shorting pins due to the the pins close proximity in the

small connector. This mechanical twisting and sliding

can cause 48V 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 48V VBUS pin to be

shorted to the CC, SBU, or USB2 pins.

These mehcanical events and non-ideal equipment

make it necessary for the CC and other pins to

be 48V tolerant, even though the pins only operate

at 5V or lower. The TPD4S480-Q1 enables the CC

and SBU or USB2 pins to be 48V 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 utilizing alternate

modes with SBU communication, use the SBU pins

of the TPD4S480-Q1 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.

The integrated VBUS divider circuit and FET driver,

allow PD controllers not rated for EPR operation to

safely operate in EPR voltage ranges. When enabled

by GPIO or automatically when VBUS exceeds 24V,

the TPD4S480-Q1 disables the optional external

blocking FET and enables the voltage divider. This

action protects 20V rated PD controllers and allows

the use of existing VBUS sense circuits.

Finally, most systems require IEC 61000-4-2

system level ESD protection for external pins.

The TPD4S480-Q1 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.