User guide
31 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
CE
= Green, V
GE
=Yellow, I
L1
=Red,V
OUT
=Blue
Figure 27
Switching waveforms of IGBT at V
IN
=200 V
AC
at full load (continue current at high point of
input voltage)
V
CE
= Green, V
GE
=Yellow, I
L1
=Red,V
OUT
=Blue
Figure 28
Switching waveforms of IGBT at V
IN
=200 V
AC
at
full load (discontinue current at low point
of input voltage)
4.5
Output ripple voltage
Due to the limitation of the board size and cost considerations, there are only four output filter capacitors with a
total of 2720 uF placed at the output stage. For the next three waveforms with full load at different input voltages,
the permissible low-frequency ripple of the output voltage is smaller than 20 V, which meets design specifications
as well.