The datasheet says:
In many power applications, an input filtering capacitor
is required to lower the radiated emission and enhance
the ESD capability, etc. In hot-plug applications, parasitic
cable inductance, along with the input capacitor, causes
overshoot and ringing when a powered cable is suddenly
connected to the input terminal. This effect causes the
protection device to see almost twice the applied voltage.
An input voltage of 24V can easily exceed 40V due to
ringing. The
device
contains internal protection against
hot-plug input transient. on the IN pins,with slew rate up to
30V/μs. However, in the case where the harsh industrial
EMC test is required, use a transient voltage suppressor
(TVS) placed close to the input terminal that is capable of
limiting the input surge to 60V (max)
and:
Enables Fast Startup and Brownout Recovery
•
Thermal Foldback Current-Limit Protection
•
1.5x, 2x Startup Current Limit Options
Moreover, my circuit has a good input filter with a large capacitor. I post the while circuit here so you can get an idea.
What do you think?
