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EP108
150V DC
IN RUSH CURRENT
BATTERY BACKUP
LIMITERS
RT101
RT102
EP105
DC INPUT (+)
RED
R101
330k
EP104
DC INPUT (-)
BLACK
R102
330k
EP109
HV GROUND
BATTERY BACKUP
R103
240k
2
C103
R104
.22
100k
IAC
4
V RMS
+ C117
C118
R140
U102
.47
270pF
15k
ML4841IS
R153
100
3
I SENSE
R113
C116
.03
.1
5
SS
R114
+ C119
.03
1
10
GND
16
V EAO
R142
C127
560k
.01
C126
.1
EP101
REMOTE ENABLE POWER SUPPLY
5
AC HOT INPUT (BRN)
CR102
CR101
EP102
CR111
+ C101
C102
6
CR110
AC COLD INPUT (BLU)
220
.01
R280
CR113
C109
R257
10k
5.1V
.1
10k
Q102
3612
C236
.1
+5V
ON/OFF
EP110
SENSE
R279
BATTERY
10k
CR143
BACKUP
CR142
R278
TO REMOTE
100k
ENABLE
R275
R277
20k
U121
10k
8
TL431AID
1
REF
CATH
R276
GND
10k
2,3,4,5,6,7
8
VIN
LM78L05
C229
+C230
.1
1
18,19,20
PRE-CONTROLLER
16,17
+15V
14,15
POWER FACTOR CHOKE
R117
L107
330
12,13
11
+ C105
C104
1
R128
1
+
51
CR106
9,10
1
R116
+ C106
+ C107
7,8
CR105
36k
1500
1500
5,6
3,4
R105
R108
R109
CR103
330k
20k
20k
Q108
C114
6027
.1
R106
R110
R120
R126
330k
20k
20k
10
R107
CR104
R302
R306
R112
330k
18V
20k
20k
10
Q101
6354
400V
R111
CONTROLLER IC
220
PFC
Q107
12
OUT
6026
R115
CR114
4.7k
15
FB
R146
100
9
RAMP2
C125
.0033
6
VDC
C113
R143
R144
.0047
3k
24.3k
7
RTCT
+
C122
C123
C124
R119
470pF
1
.1
24.3k
8
RAMP1
C108
470pF
1
IEA0
R141
10k
C120
270pF
PRE-CONTROLLER
C121
PRE-CONTROLLER
SWITCHED
.0027
14
Q104
C197
REF
+15V
+15V
T106
6026
2.2
13
3
Vcc
+ C128
C147
R149
C139
6.8
C129
C140
CR115
.1
1k
6.8
.1
6.8
PWM
11
1
6
OUT
R148
C137
CR116
4.7k
2.2
8
4
U107
5
5
4
6
1
2
R133
100k
Q105
3612
R134
R155
R137
R129
20k
36k
1M
36k
CR138
CR137
R136
R135
R131
R150
U110C
100k
13k
36k
2k
LMC550AM
10
+
Q106
8
R154
3600
R118
9
100k
Q103
18.2k
3600
C148
R132
R130
R138
.1
100k
100k
2.26k
C234
R139
.001
2.26k
WO104
WO116
THERMAL
TEMP OUTPUT
SOURCE
SENSOR
U110A
+5V
LMC550AM
U106
1
1
2
3
VOUT
IN
A803
OUT
+
1
GND
+ C232
C233
C154
C115
GND
+ C153
2
R184
.1
.1
.1
6.8
1
2,3,4,5,6,7
3
357k
R182
R183
75
95.3k
10-31
Part No. 001-2001-200
CR145
+400V
T105
CR112
+ C110
+ C111
R311
R121
3
4
330
330
100k
100k
R125
PRI
SEC
13
R312
R122
1
100k
100k
2
R307
0
R313
R123
100k
100k
R314
R124
100k
100k
R127
1.27k
U108
6
5
2
1
4
MAIN OUTPUT VOLTAGE SET/
+400V
R159
20
CR123
Q116
6351
C136
R161
2.2
20
Q115
CR117
CR118
6026
18V
3
R160
470
1
C228
12
R163
CR119
2.2
20
14
15
8
16
R165
20
CR134
Q118
6351
CR120
18
18V
19
Q117
20
6026
R164
470
CR148
13V
C236
.1
+5V
Q114
SHUTDOWN
3612
OVER-VOLTAGE
R192
8.2k
R193
8.2k
R187
R230
95.3k
BUFFER/
100
R194
R197
HYSTERESIS
+26.5V
R185
R186
8.2k
10k
U110A
1k
10k
R190
CR139
LMC550AM
12
+
1k
14
R195
C156
13
Q120
8.2k
.01
3600
R188
R191
10M
3.3k
+5V
R273
R196
1k
8.2k
R189
6.81k
J102
2
BATTERY
BACKUP
1
FAN CONTROL
August 2000
2
7
ANODE A
ANODE D
U109
3
6
ANODE B
ANODE C
+2.5V
4
5
NC A
NC B
TL431ID
1
8
CATHODE
REF
R175
1.8k
R174
C150
1k
.01
(25.9-27.3V)
R173
R170
R171
R172
C149
16.9k
820
820
100k
.1
R169
1k
SOURCE
+15V
FEEDBACK
+26.5V
1
U111
2
VIN
VOUT
LM317T
+ C159
ADJ
R267
6.8
430
3
R222
0
+ C199
R268
4.7k
6.8
EP106
67V TO BATTERY BACK-UP
U104A
U104B
R272
R151
74HC08
74HC08
1
51
20k
3
4
2
6
5
C207
C138
.0022
R152
.001
CR140
C210
4.7k
R176
.0022
100
CR122
SYNC PULSE WIDTH
L101
CR121
F102
10A
R166
R167
R168
+26.5V
10
10
10
+ C143
+ C144
+ C145
C146
C141
CR128
.1
.1
2700
2700
2700
C142
.001
CR107
WO105
+26.5V DC
EXTERNAL INPUT
POWER
WO106
CONNECTOR
EP111
CGR
BATTERY BACKUP
C225
R156
R274
.01
1k
1k
EP112
R262
GROUND
R157
29.4k
BATTERY BACKUP
20k
1
8
CATHODE
REF
U115
R263
C135
2
7
ANODE A
ANODE D
2.49k
.1
R202
3
6
ANODE B
ANODE C
20k
TL431ID
4
5
NC A
NC B
SHUTDOWN DRIVE
TO U119, U120, U122 (2)
FAN CONTROLLER/
DRIVE
Q121
3600
J201
2 FAN HIGH
1 FAN LOW
800W POWER SUPPLY SCHEMATIC (1 OF 2)
FIGURE 10-36
U104
SOURCE
+5V
U105
8
1
VIN
VOUT
LM78L05
+ C132
+ C133
C131
GND
C134
.1
1
1
.1
2,3,4,5,6,7
C152
+ C160
C161
R180
.1
15
.01
R158
7.5k
Q112
15k
3600
Q111
R179
SYNC (2)
3600
4.7k
APPROXIMATELY
R181
100V PEAK
1k
R178
2k
Q110
SYNC PULSE OUTPUT
3600
BUFFER
CONTROLLER
FOLDOUT
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