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18.8. SMPS Circuit
1
2
3
SCHEMATIC DIAGRAM - 19
A
J
SMPS CIRCUIT
GC GA/GS
B
C
CN5801
I
+30V_SENSE
6
TO
+30V_SENSE
5
D-AMP CIRCUIT
C5831
0.1
GND
4
(ZJ5500*)
GND
3
IN SCHEMATIC
C5832
-30V_SENSE
2
DIAGRAM - 18
0.1
-30V_SENSE
1
D
TH5861
D4CC11040013
C5900
10
E
CN5802
AM_BP
AM_BP
11
NC
10
PCONT
PCONT
9
B
TO
DC18V
8
MAIN CIRCUIT
C5812
DC18V
7
0.1
(ZJ2701*)
+18V.-12V_GND
6
IN SCHEMATIC
+18V.-12V_GND
5
DIAGRAM - 5
DCDET
4
C5896
NC
3
0.1
SYS3.3
SYS3.3
2
F
SYNC
SYNC
1
R5898
10K
K20...GA/GS
0
TP
1
K9...GC
0
G
NOTE: " * " REF IS FOR INDICATION ONLY
H
1
2
3
4
5
6
: +B SIGNAL LINE
: -B SIGNAL LINE
Q5862
B1GBCFJJ0051
R5862
R5863
TEMPERATURE DETECT
18K
18K
R5860
R5861
Q5860
10K
2.7K
B1ADCF000001
Q5861
TEMPERATURE DETECT
B1ABCF000176
C5869
R5864
0.1
TEMPERATURE DETECT
10K
C5870
0.1
R5800
R5841
R5836
R5833
15K
120K
2.2K
2.2K
R5840
C5843
R5837
R5835
82K
10
2.2K
2.2K
R5801
C5844
22K
10
QR5802
QR5801
B1GDCFGA0018
B1GBCFJN0038
DC DETECT
D5804
POWER CONTROL
B0ACCK000012
HEATSINK*
G1
G2
C5826
C5800
0
0
GND
R5821
R5822
R5823
R5824
470
470
470
470
R5825
R5826
R5827
R5828
470
470
470
470
C5817
100V0.1
R5814
Q5803
AM_BP
8.2K
B1BABG000007
R5820
SWITCH
10K
PCONT
4
5
6
7
8
9
D5801
B0ABSM000008
TH5860
D4CC11040013
1
2
3
T5701
G4DYZ0000049
MAIN TRANSFORMER
10
9
-30V
DRAIN
11
C5805
8
R5832
50V2200
2.2K
AMPGND
12
7
13
6
C5808
R5834
50V2200
2.2K
14
5
+30V
15
4
VIN
GND
16
3
3
2
1
R5720
22
VCC
17
2
+18V
D5803
B0EAMM000057
B0HFRJ000012
18
1
D5802
B0ABSM000008
C5813
35V330
B1BABG000007
LIMITING SWITCH
PC5720
B3PBA0000402
FEED BACK
R5809
R5807
330
330
R5721
10K
1
4
R5808
2.2K
2
3
C5720
0.1
R5802
C5810
12K
0.1
IC5801
C0DABFC00002
R5730
1K
SHUNT REGULATOR
R5803
1K
C
1
D5722
R5804
R5806
B0BC019A0007
47K
15K
3
C5818
A
D5723
0.1
B0ACCK000012
2
R
R5805
PC5701
2.2K
B3PBA0000402
FEED BACK
1
4
R5817
R5810
330
330
QR5810
2
3
B1GBCFLL0037
SWITCH
7
8
9
131
10
11
12
C5713
R5702
R5703
0.01
100K
100K
3
D5702
B0ZAZ0000052
1
2
R5724
D5726
120
B0EAKM000117
D5731
R5723
1K
D5721
L5704
B0BC010A0007
J0JBC0000019
Q5720
CURRENT
D5729
B0EAMM000057
Q5722
R5722
D5727
B1ABCF000176
1.2K
B0ACCK000012
CURRENT
LIMITING SWITCH
D5724
B0ACCK000012
D5728
B0ACCK000012
C5725
C5723
0.1
470P
C5728
1000P
C5724
R5733
50V56
47K
C5721
C5722
220P
1000P
C5737
470P
D5725
B0BC6R100010
1/2
2/2
SA-VKX80GA/GC/GS SMPS CIRCUIT
10
11
12
13
14
P1
1
2
TO SMPS
SECTION (2/2)
3
R5732
100
IC5701
C5HACYY00005
SWITCHING REGULATOR
7
OCP/BD
6
FB
5
OLP/SS
C5730
HEATSINK*
1
4
VCC
C5726
0.1
G1
G2
3
GND
2
S
1
D
4
R5726
0.15
R5727
0.15
13
14
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