1 Features

1• 4-Channels of Short-to-VBUS Overvoltage

Protection (CC1, CC2, SBU1, SBU2): 24-VDC

Tolerant

• 8-Channels of IEC 61000-4-2 ESD Protection

(CC1, CC2, SBU1, SBU2, DP_T, DM_T, DP_B,

DM_B)

• CC1, CC2 Overvoltage Protection FETs 600 mA

capable for passing VCONN power

• CC Dead Battery Resistors integrated for handling

dead battery use case in mobile devices

• 3-mm × 3-mm WQFN Package

2 Applications

• Laptop PC

• Tablets

• Smartphones

• Monitors and TVs

• Docking Stations

3 Description

The TPD8S300 is a single chip USB Type-C port

protection solution 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 which 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

close 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 they only operate at 5 V or

lower. The TPD8S300 enables the CC and SBU pins

to be 20-V 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. 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 their external pins. The

TPD8S300 integrates IEC 61000-4-2 ESD protection

for the CC1, CC2, SBU1, SBU2, DP_T (Top side D+),

DM_T (Top Side D–), DP_B (Bottom Side D+), DM_B

(Bottom Side D–) pins, removing the need to place

high voltage TVS diodes externally on the connector.