Infineon iMOTION EVAL-M1-36-84A, User Manual, Page: 22 / 30

User Manual 22 Revision 1.2
2018-09-23
EVAL-M1-36-84A User Manual
iMOTION ™ Modular Application Design Kit
Schematics and Layout
6.4 Auxiliary Power supply
Figure 14 reports the schematic of the power supply available on the EVAL-M1-36-84A board. The circuit
includes LNK304 that is used to generate 15V (V
CC
) directly from the DC bus. V
CC
is connected to the gate drivers
inside the CIPOS ™ IPM.
The linear regulator LD1117S33 generates 3.3V from V
CC
. The 3.3V power supply is used in the over current
comparator circuit. LED1 is used to indicate whether the board is powered or not. Both V
CC
and 3.3V are also
provided on the 20 pin interface connector J4 to feed circuitry on the controller board.
Figure 14 Power supply section of the EVAL-M1-36-84A evaluation board
C8
106/6.3V
Vin Vout
GND
U2
LD1117S33
R3
4.7K
+3.3V
LED1
LTL-16KE
1
TP3
VCC
L2
2.2mH
C3
104
VCC
C6
104
1
TP4
3.3V
FB
2
BP
1
D
4
S
5
S
6
S
7
S
8
U1
LNK304
D1
US1J
D2
US1J
R2
15.8K
R1
2K/1%
C4
105/25V
+
C5
220uF/35V
C7
104
R4A 300R
R4B 300R
R4C 300R
DCP