User Manual
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Revision 1.4
2020-07-16
EVAL-M3-IM564 User Manual
iMOTION
™
Modular Application Design Kit
Hardware description of EVAL-M3-IM564
If the setting temperature is 100 °C,
@
=
5.576 kohm, and the shutdown value should be
2.33 V. If the setting temperature is 80 °C,
@
=
10.593 kohm, and the shutdown value
should be 2.36 V.
Figure 28 External temperature sense input configuration in MCEWizard
4.4
System thermal resistance testing
4.4.1
Heatsink thermal resistance
In order to test the thermal impedance of heatsink to ambient R
thCA
, the DC source is used to conduct the IPM
internal diodes, as shown in Figure 29. With the DC source voltage increasing, current through IPM I
IPM
and
voltage on IPM V
IPM
are monitored by current and voltage meter, the IPM case-temperature test point is
between IPM and heasink, as shown in Figure 29 below, the same as Tc point of inverter IGBT of the IPM
daasheet [1].
CIPOS
TM
IPM
IM564-X6D
+
-
A
V
V
IPM
I
IPM
`
PCB
Heatsink
Case temperature (Tc) test point
Figure 29 Heatsink thermal testing set-up
Thermal resistance between junction to ambient R
thJA
is divided into 2 parts as in the following formula: thermal
resistance between junction to case R
thJC
and thermal resistace between case to ambient R
thCA
.