Table 3-2 outlines the results of each test. A passed test is determined by the device successfully providing power to the maximum nominal load after the short is applied. Each device was able to pass every short condition with no failures.

As each device passed, the waveforms varied across each short. The key here is the on state resistance (RDS(ON)) of each high side switch. Lower RDS(ON) is typically better for normal operation this means there is lower power dissipation, but allows more current in a short which stress the device. Figure 3-2 through Figure 3-4 display the 18V waveform for each device shorted with the lowest resistance and inductance. This is the highest input voltage specified in the recommended operating conditions of each high side switch.

As previously stated, each waveform reveals the short circuit current rising s the RDS(ON) of the high side switch decreases. With the TPS2HC08 seeing approximately 36A as soon as the short is applied. Furthermore, as seen in each waveform, the FLT is pulled low when the short is detected alerting the controller of a failure in the system.