The TPS23754 device has been tested to EN61000-4-2 using a power supply based on Figure 27. The levels used were 8-kV contact discharge and 15-kV air discharge. Surges were applied between the PoE input and the DC output, between the adapter input and the DC output, between the adapter and the PoE inputs, and to the DC output with respect to earth. Tests were done both powered and unpowered. No TPS23754 device failures were observed and operation was continuous. See Figure 28 for additional protection for some test configurations.
ESD requirements for a unit that incorporates the TPS23754 have a much broader scope and operational implications than are used in TI’s testing. Unit-level requirements should not be confused with reference design testing that only validates the ruggedness of the TPS23754.