System Performance; Efficiency And Pfc Measurements - Infineon IKW40N65WR5 Manual

5 kW two-channel interleaved CCM PFC EVAL board
IKW40N65WR5, IDW60C65D1 and 1ED44175 in high frequency PFC application

System performance

4 System performance
4.1

Efficiency and PFC measurements

All test conditions are based on a 25℃ ambient temperature
For the efficiency test it is important to monitor the voltage directly on the input connector X2 and output
connector X8.
All efficiency and PF are carried out with a "WT33E" Yokogawa power meter.
Figure 16 shows the overall efficiency of EVAL-PFC5KIKWWR5SYS including the aux supply for cooling fans at
different input voltages between 180 V
customers to increase the PFC switching frequency with high effiency, even frequencies up to 60 kHz.
98,500%
97,500%
96,500%
95,500%
94,500%
93,500%
92,500%
500
Figure 16 Efficiency of EVAL-PFC5KIKWWR5SYS
Figure 17 shows the power factor curve at different loads and different AC input voltages. As shown, even at light
loads, the power factor is higher than 0.96. And an almost unity power factor is achieved, with values higher than
0.99 for loads above 30% of rated power.
User guide
and 264 V
AC
1000 1500 2000
180VAC
. The efficiency curves show that WR5 IGBTcan support
AC
Efficiency
2500 3000
Output power (watt)
230VAC 264VAC
25 of 41
3500 4000 4500 5000
v1.0
2021-03-05