Emi Filter And Soft Power Up Circuit - Infineon EVAL-M1-IM818-A User Manual

EVAL-M1-IM818-A user guide
Evaluation power board with MADK M1 connector
System and functional description
2.6.5

EMI filter and soft power up circuit

Figure21 depicts the schematic from the AC line input connector J1 to the rectified DC bus voltage. This
circuitry includes a passive EMI filter consisting of elements C1, C2, L1, L2 and a 40 A/1200 V rectifier block
DB, a fuse F1 for inrush current protection, and a relay K1 for soft powering up and reducing conduction
losses in steady state. Four electrolytic capacitors C6, C7, C8 and C9 are used for buffering the rectified DC
bus voltage DCP.
DB
J1
2
5 U
3
4
3
2
1
CON7
GUO40-12NO1
Current feedback configuration in MCEWizard for EVAL-M1-101T and EVAL-M1-IM818-A
Figure 21
User guide
K1
R1
15V
T9GV1L14-12
27 0.5W
R2
5
P
10W100ohm
2200pF 4kV
V
4
W
2200pF 4kV
1
N
F1
ZTPV-25 30A1000V
L1
C1
C2
2mH 10A
C5
104 1000V
GND1
TPS
22 of 35
L2
220uH 7.1A DCBUS
TPS
C6 C7
C3
104 1000V
C8 C9
R3
C4
R4
Revision 1.4
2021-09-10