User guide
36 of 41
v1.0
2021-03-05
5 kW two-channel interleaved CCM PFC EVAL board
IKW40N65WR5, IDW60C65D1 and 1ED44175 in high frequency PFC application
System performance
V
OUT
=Blue, I
OUT
= Green
Figure 37
Load step :100%
→
0% at V
IN
=180 V
AC
Figure 37 illustrates the response of the voltage control loop during a load step from 100% to 0% with a voltage
overshoot up to 425 V. A similar response can be observed at V
IN
= 230 V
AC
and V
IN
= 264 V
AC
.
4.8
Thermal measurements
The board shown in this document (EVAL-PFC5KIKWWR5SYS) is provided with an enclosure. The implemented
thermal concept uses two low-power fans attached to two heatsinks, in which the power semiconductors
dissipate their generated losses.