TPD8S300 Datasheet, PDF (1/4 Pages) Texas Instruments – USB Type-C Port Protector: Short-to-VBUS Overvoltage and IEC ESD Protection

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TPD8S300
SLVSDD6 – SEPTEMBER 2016
TPD8S300 USB Type-C™ Port Protector: Short-to-V_BUS Overvoltage and IEC ESD
Protection
1 Features
•1 4-Channels of Short-to-V_BUS Overvoltage
Protection (CC1, CC2, SBU1, SBU2): 24-V_DC
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 V_CONN power
• CC Dead Battery Resistors Integrated for handling
dead battery use case in mobile devices
2 Applications
• Laptop PC
• Tablets
• Smartphones
• Monitors and TVs
• Docking Stations
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.
Application Diagram
3 Description
The TPD8S300 is a single chip USB Type-C port
protection solution that provides 20-V Short-to-V_BUS
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
V_BUS line. Another concern for USB Type-C is the
mechanical sliding of the connector shorting pins, due
to the close proximity they have in this small
connector. This can cause 20-V V_BUS 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 V_BUS pin to be shorted to the CC and
SBU pins.
Battery
5V
DC/DC
AUX_P
AUX_M
DP
DM
FET
OVP
FET
OVP,
OCP
CC Analog
USB PD Phy &
Controller
Power Switch
Control
SBU Mux
D+/D- Mux
TPD8S300
OVP & ESD
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.