SLLS684I July 2006 – March 2016 TPD2E001
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
TPD2E001 is a diode array type Transient Voltage Suppressor (TVS) which is typically used to provide a path to ground for dissipating ESD events on hi-speed signal lines between a human interface connector and a system. As the current from ESD passes through the TVS, only a small voltage drop is present across the diode. This is the voltage presented to the protected IC. The low RDYN of the triggered TVS holds this voltage, VCLAMP, to a tolerable level to the protected IC.
For this design example, a single TPD2E001 is used to protect all pins of a USB 2.0 connector.
Given the USB application, Table 1 shows the Design Parameters:
|Signal range on IO1, and IO2||0 V to 5 V|
|Signal voltage range on VCC||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 VCC pin can be connected in two different ways:
The TPD2E001 has 2 IO pins which support 0 to either 10 V or VCC + Vforward (depending on if the VCC pin is connected to a VCC line or has a 0.1 µF capacitor to ground).