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EVAL-IMI111T user guide
iMOTION™ MADK starter kit for IMI111T IPMs
Thermal characterization
5
Thermal characterization
Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, and Figure 18 show the thermal characterizations of the two
part numbers. The tests were performed under the following conditions:
T
= 20°C, input voltage = 220 Vrms (V
amb
and 2-phase PWM flat bottom modulation).
Figure 13, Figure 14, Figure 15, and Figure 16 show results of tests performed under two PWM frequencies (6 kHz
and 16 kHz) and different motor phase current values or different input powers. Figure 17 and Figure 18 show
results of tests performed under different PWM frequencies (4 kHz to 20 kHz) till T
A 2-phase PWM flat bottom modulation enabled the reduction in switching losses compared to a 3-phase SVPWM
(symmetrical placement of zero vectors).
16kHz, 2-phase PWM
90
80
70
60
50
40
30
20
10
0
0
100
200
Motor Current (mA
Thermal characterization of IMI111T-026H vs IMI111T-046H, 2-phase PWM, 16 kHz, FR4 PCB with
Figure 13
2 oz copper
16kHz, 3-phase PWM
90
80
70
60
50
40
30
20
10
0
0
50
100
150
Motor Current (mA
Thermal Characterization of IMI111T-026H vs IMI111T-046H, 3-phase PWM, 16 kHz, FR4 PCB with
Figure 14
2 oz copper
User guide
= 311 V), two different PWM modulation types (3-phase PWM modulation
DC
IMI111T-046H
IMI111T-026H
300
400
500
)
rms
IMI111T-026H
IMI111T-046H
200
250
300
350
)
rms
90
80
70
60
50
40
30
20
10
0
0
20
40
90
80
70
60
50
40
30
20
10
0
0
10
20
30
18 of 37
= 100°C was reached.
case
IMI111T-026H
IMI111T-046H
60
80
100
120
IMI111T-026H
IMI111T-046H
40
50
60
70
V2.1
2022-12-9
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