9.2.1 Design Requirements

A typical operation for the TVS2201 would be protecting a USB Type-C V_BUS input, with a nominal input voltage of 20 V and a required withstand of 22 V, shown in Figure 7. In this example, a TVS2201 is protecting the input to a TPS65982 Type-C Port Controller. Without any input protection, this input voltage will rise to hundreds of volts for multiple microseconds, and violate the absolute maximum input voltage and harm the device if a surge event is caused by lightning, coupling, hot-swap ringing, or any other fault condition. This customer is adding additional surge protection on the V_BUS line because they are worried about faulty connectors causing power spikes, and in addition wants to have protection against mechanical shorts in the connector that could possibly apply –20 V to the V_BUS line.