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5 kW two-channel interleaved CCM PFC EVAL board
IKW40N65WR5, IDW60C65D1 and 1ED44175 in high frequency PFC application
System design
increase system efficiency.For a simplifed design of the flyback transformer (TX1 in Figure 10), there is only one
secondary winding with an output voltage of 15 V, which is an optimized votage for driving IGBTs.
However, the maximum recommended voltage for cooling fans is 13.8V, therefore, as shown in Figure 11, two
LDO chips IFX1963 provide about 13.6 V voltage to fans directly, without fan speed regulation.
Figure 11
Low dropout regulator for fans of EVAL-PFC5KIKWWR5SYS
3.2
Layout
The layout of this evaluation board is helpful for customers to understand the placements of components and
the routing of wires for whole board. As a default, the PCB has four electrical layers with 70 µm of copper and
diemensions of 244 mm × 142 mm. The PCB board thickness is 2 mm. Please check Infineon's website or contact
Infineon's technical support team to obtain more detailed information and the latest Gerber files.
User guide
17 of 41
v1.0
2021-03-05
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