AUIR3330STRL View Datasheet(PDF) - International Rectifier
Part Name
Description
MFG CO.
'AUIR3330STRL' PDF : 30 Pages View PDF
AUIR3330S
At module level:
This typical schematic takes into account the
created by the PCB tracks. Its impedance is
Ztrace R jL .
2F
Due to the jL element, the current
line must be smooth to avoid the over voltage
Ul
L
Di
Dt
The impedance value of the parasitic element
negligible compare to the motor impedance.
an important influence on the EMI
parasitic elements
variation in each
spikes.
Z3 and Z6 are
So they don’t have
perturbation level.
Figure 2: typical schematic of a power
module
The parasitic component evaluation for DC and low frequency conditions are:
R l
S
L
0.2
106
l
ln(
2
d
l
e
)
0.5
0.22(
d
l
e
)
Where:
: material resistivity Cu = 1.7x10-8m
l : track length in m
S : track section in m² (d x e)
d : track width in m
e
e : track thickness in m
20 www.irf.com © 2012 International Rectifier
May 29, 2014
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