Synchronization Circuit - Samsung S3F84B8 Design Manual

S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00

2.3 SYNCHRONIZATION CIRCUIT

FUSE1
AC_L
10A/250V
-
C22 2
0.1uF/275V
AC_N
COOKER
L2
L3
CHOKE
C20
C19 0.24uF/1200V
+
4
4uF/400V
BRIDGE
D15XB80H18
R3
470K/0.5W
R10
470K/0.5W
Sy n_N
R11
5K6
Figure 2-3
IGBT
IGBT_CTRL
FGA15N120
R50
CONSTANTAN
SYS_I
R2
220K/0.5W
R6
220K/0.5W
R7
220K/0.5W
R8
220K/0.5W
Sy n_P
R25
24K
R9
2KJ
IGBT_V_P
IGBT over voltage protection
R12
2K7
Power Supply Circuit
2-7
2 HARDWARE IMPLEMENTATION
R22 R21
2K 2K
D8 Q4
4148
8050
Q1
R36 8050
8550
10R Q2
Q5 8050
C17
R37 R24
10K 101 1K
+18V
R28 51R
C28
+
25V/100uF
R23 2K
C23 102
PWM
IGBT Driver