Datex-Ohmeda 7900 - Power Supply Board Schematics

8 /Schematics
8-18 7900 Ventilator- 1503-0151-000 1-97
Figure 8-17
Power supply board schematic diagram, page 1 of 5
1%
1.5W
R57
0.1
0.1
1%
1.5W
R34
SH1
VBUSS
U6
UC3906
E8
VB
SH2,5
SH3
BATT_P
35V
1UF
C108
10%
3906
Q24
BSS138
Q2
IRF9Z34
Q6
Q22 BSS138
MTG1 MTG2
TIP31C
Q15
1%
R41
160
1W
C90
50V
10%
0.1UF
R104
10K
1/8W
1%
3904
Q1
3904
Q23
1%
R136
27.4K
1/8W
20K
R44
1/8W
1%10%
C53
0.01UF
50V
R99
10K
1/8W
1%
5%
R40
10K
1/2W
CR18
DL4004
20%
160V
2.2UF
C54
C38
2.2UF
160V
20%
DL4004
CR43
E7
63V
5600UF
C42
20%
121K
R129
1/8W
1%
TC54VN4502
U26
R38
2.43K
3W
1%
40.2K
R134
1/8W
1%
U24
TLP191B
1MEG
R43
1/8W
1%
TC54VN4502
U2
CR19
914
SH4
MAIN_POWER_ON
SH4
CHG_DISABLE
R58
1%
10K
1/8W
J1
MBRS1100T3
CR6
20%
C44
3.3UF
35V
CR15
DL4004
R46
1%
2.49K
1/8W
20%
25V
C2
15UF
R59
1%
20K
1/8W
R75
1%
115K
1/8W
R74
1%
267K
1/8W
R73
1%
23.2K
1/8W
20%
100V
C22
0.22UF
20%
100V
0.22UF
C23
20%
160V
2.2UF
C41
100V
CR13
ES3B
2W
10
R37
5%
DL4004
CR16
10-26-95
SMCJ33A
CR41
MURS120T3
CR27
GBU8D
CR14
MBR1545CT
CR4
0.1UF
10%
50V
C72
0.1UF
10%
50V
C71
20K
1%
1/8W
R9
20K
1%
1/8W
R63
1.00K
1%
1/8W
R89
1
1%
1/4W
R28
R30
1/4W
1%
1
IR2110S
U17
R29
1/4W
1%
1
MURS120T3
CR28
100UH
L1
1%
1/8W
3.32K
R101
1%
1/8W
590
R100
MBR1545CT
CR3
J4
IRF540
Q14
IRF540
Q13
MMBT5550LT1
Q16
914
CR44
20%
160V
2.2UF
C52
1%
1/8W
47.5K
R42
C30
22UF
35V
20%
20%
35V
22UF
C31
SH1
VBUSS
20%
C92
3.3UF
35V
1/8W
1%
R108
200
1%
1/8W
3.32K
R23
200V
2200PF
C35
20%
1%
1/8W
R106
3.32K
C96
0.1UF
50V
10%
20K
1%
1/8W
R47
20K
1%
1/8W
R60
SH3
BATT_CUR_SEN
20%
160V
330UF
C48
10%
50V
0.1UF
C89
1%
1/8W
200
R105
MAX797
U15
1%
1/8W
4.75K
R133
1%
1/8W
R107
590
1%
1/4W
1
R15
CR42
914
15V
5245
CR39
C111
0.1UF
50V
10%
10V
5240
CR17
R45
2W
27K
5%
1%
1/8W
75K
R135
1%
1/8W
10K
R139
SH1
VBUSS
C26
2200UF
35V
20% 20%
35V
22UF
C29
SH4
AC_LED_A
1UF
20%
50V
C11
20%
35V
3.3UF
C93
10%
50V
0.1UF
C95C94
0.1UF
50V
10%
20%
C46
5600UF
63V
SMCJ33A
CR40
15V
CR1
SMCJ15A
10%
50V
0.1UF
C91
C50
10%
0.01UF
250V
C51
10%
0.01UF
250V
C49
250V
10%
0.01UF
C88
3.3UF
35V
20%
C112
3.3UF
35V
20%
MTW45N10E
Q11
IRF540
Q12
1%
R48
10K
1/8W
R61
1%
13.7K
1/8W
5%
1/2W
5.1K
R39
+VIN C/LC/S+ C/S-
CECOMPCSO
GND
OCT
SINK
SRC
TB
VS
OCI PWR_IND
SLC
11
16
13
12
9
8
6
3
11415
5
7
10
24
COM
VIN OUT
2
1
3
46
31
COM
VINOUT
2
1
3
2
1
COM
HO
LIN
LO
SD
VB
VCC
VDD
VS
VSS
HIN
15
6
11
3
7
1
14 2
8
13
12
VDD
3
2
1
BST
DH
FB CSL
VLV+
CSH
DL
GND LX
PGND
REF
SS
SYNC
SHDN
SKIP
14
16
79
1110
8
13
415
12
3
1
5
6
2
16.6V
(+14V)
CHASSIS
BATT-
BATT+
-+
VIN +30-60V
150 VAC
SEC2
SEC1
Vth=
GND
ULVECO #AA24249
NOTE: INDICATES DEVICES THAT HAVE A HEAT SINK
LO_DRV
VBOOT
VIN
VBUSS
PGND2
BATT_P
SINK
PGND
TO LINE TRANSFORMER
A_HI
A_LO
HI_DRV
(7.80 / 8.19)