abc_de
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I am working on motor control acim motor(only speed control) with switching device IRF640 with DC bus 90v.
My question if what would be Tj temp when
ID= 7amps
Rdson: .18mohm
Ta= 40degree Celsius
Rth(j-a): 62c/w
P=IxIxR
P= 7x7x.18=8.82
Tj= Ta+Rth(j-a)XP
Tj= 40+62×8.82
Tj= 586.84
Please help me to clear
My question if what would be Tj temp when
ID= 7amps
Rdson: .18mohm
Ta= 40degree Celsius
Rth(j-a): 62c/w
P=IxIxR
P= 7x7x.18=8.82
Tj= Ta+Rth(j-a)XP
Tj= 40+62×8.82
Tj= 586.84
Please help me to clear