Hi,
I have three questions.
My customers want to know the behavior of UCC21520 in the next mode from the perspective of FMEA.
#1
The behavior when pulses are input unintentionally at the same time to INA and INB.
The following conditoin as:
Disable is Low or left open
DT is left open or programmed with RDT
At this time, either output is instantaneously high for internal propagation delay, after that both output will go Low.
Is it correct?
In that case, please let me know the definition of the time when the output becomes High.
For example, output becomes high due to the propagation delay difference between OUTA and OUTB.
It is assumed if the input is totally simultaneous.
#2
What happens when DT is shorted to GND?
・The dead time will zero but it normally operates
・It will not normally operate.
for example, the both output keep low.
#3
Is not the NC pin connected to any other internal node in IC?
I would like to know if these NC pins are short-circuited with other nodes externally but there is no problem with IC operation.
It is not assumed that one NC pin can simultaneously short to two nodes, or two NC pins simultaneously short to another node.
Best regards,
Tomoaki Yoshida