SLVS928B March 2009 – August 2014 TPD4S012
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
The TPD4S012 is a four-channel Transient Voltage Suppressor (TVS) based Electrostatic Discharge (ESD) protection diode array for USB chargers and USB On-The-Go (OTG) interfaces.
The TPD4S012 provides IEC 61000-4-2 system level ESD Protection featuring 15 V tolerance on the VBUS line. The device is ideal for providing circuit protection for USB charger and OTG applications due to its high-voltage tolerance at the VBUS line and small flow-through package.
For this design example, a single TPD4S012 is used to protect all pins of a micro/mini USB connector.
Given the USB application, the following parameters are known.
|Signal range on D+, D–, and ID||0 V to 5 V|
|Signal range on VBUS||0 V to 5 V|
|Operating Frequency||240 MHz|
To begin the design process, some parameters must be decided upon; the designer needs to know the following:
The TPD4S012 has 3 pins which support 0 to 5.5 V signals, these are suited for the D+, D–, and ID pins. The VBUS pin is suitable for the VBUS line, and has the benefit of being tolerant of voltages up to 16 V
The 0.8 pF (Typ) of the TPD4S012 support data rates in excess of 480 Mbps.