Hi Sai,
Are you monitoring VDD with a scope or a DMM? It is important to use a scope and use the nFAULT and nOTW signals to capture the details of the event.
Looking at the outputs with respect to the inputs can help determine if the fault is overtemperature. If overtemperature, the outputs will not respond to the inputs until the device cools down. This is can be tens to hundreds of milliseconds.
Are you monitoring VDD with a scope or a DMM? It is important to use a scope and use the nFAULT and nOTW signals to capture the details of the event.
Looking at the outputs with respect to the inputs can help determine if the fault is overtemperature. If overtemperature, the outputs will not respond to the inputs until the device cools down. This is can be tens to hundreds of milliseconds.