User`s guide

Board Layouts and Schematics
© 2008 Microchip Technology Inc. DS70320B-page 91
FIGURE A-17: SECONDARY SIDE HARDWARE FAULT CIRCUITS SCHEMATIC
220pF
C13
220pF
C17
R5
1M
R58
1M
220pF
C53
47K
R135
R11
470R
R8
470R
C58
100pF
R189 4.7K
R142 100K R143 100K
220pF
C2
220pF
C19
R48
1M
R9
470R
470R
R22
470R
R10
R155
4k7
R145
47K
0R
R191
R150
4K7
R37
10K
R34
10K 10K
R44
R66 47K
R49
10K
R55
10K
R45
6K8
R1
4K7
10K
R116
R118
1M
4K7
R114
4K7
R126
4K7
R134
10K
R26
R23
47K
R6
47K
R67
10K
R57
47K
R39
47K
R38
100K
10K
R59
R21
1M
R79
4K7
R136
10K
R27
47K
Over_Voltage DC Bus
R123
1M