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Circuit Diagrams and PWB Layouts
SSB: DC-DC Converter
1
2
DC-DC CONVERTER
SUPPLY
3251
A
1251
F251
1
1R0
2
F252
4251
3
F253
RES
4
5
NC
F254
6
F255
7
8
NC
9
F257
10
11
NC
B
+9V_STBY_PDP
C
D
+12VUNREG
E
3139 123 5837.1
1
2
LC4.6E AA
3
4
I264
+8V6
5251
+12VUNREG
+12V
5252
+5V
2251
2252
2253
2254
10p
10p
10u
16V
10u 16V
TO/FROM 1M20 OF HERCULES
+5V2
4255
A3
+5V2_RELAIS_IO2
(PDP)
A3
2255
5257
5258
10p
(LCD)
(LCD)
(PDP)
I251
5259
(PDP)
I252
I253
6259
2262
3259
3260
2261
47u
10K
SS14
6K8
RES
6262
5262
10u
I254
SS24
2263
2264
10u
10u
NC
SupplyGnd
SupplyGnd
SupplyGnd
3
4
7.
37
5
+12VUNREG
6270
BZX384-C8V2
F258
+12VSW
I261
3270
2K2
I262
3271
470R
7260
LF33CPT
1
5
IN
OUT
2
4
CTRL NC
NC
COM
16V
I255
NC
7262
Φ
VCC
VREF
L5973D
5267
I256
1
OUT
3
INH
I257
5
FB
2
SYNC
I258
4
COMP
GND GND_HS
2265
2266
220p
22n
6267
SS36
I259
SupplyGnd
SupplyGnd
SupplyGnd
SupplyGnd
3266
4K7
SupplyGnd
5
6
7
+3V3STBY
3273
3274
220K
22K
F259
POWER_DOWN
A2
A5
7272
I263
BC847BW
7271
BC847BW
2271
10n
+3V3STBY
F260
5268
I260
10u
33u
3267
5K6
1%
3268
2268
2269
3K3
16V
16V
470u
470u
1%
SupplyGnd
SupplyGnd
6
7
8
1251 A1
2251 B2
2252 B2
2253 B3
2254 B3
2255 B2
2261 D4
2262 D4
2263 D3
2264 D4
2265 E5
2266 E5
A
2268 E7
2269 E7
2271 B6
3251 A2
3259 D2
3260 D3
3266 E5
3267 E6
3268 E6
3270 B6
3271 B6
3273 A7
B
3274 A7
4251 A2
4255 B2
5251 A3
5252 A3
5257 B3
5258 B3
5259 C3
5262 D3
5267 D6
5268 D7
6259 D3
C
6262 D3
6267 E6
6270 A6
7260 C4
7262 D4
7271 B7
7272 B7
F251 A1
F252 A1
F253 A1
F254 A1
D
F255 A1
F257 B1
F258 A4
F259 B7
F260 C7
I251 C3
I252 C4
I253 C4
I254 D3
I255 D4
I256 D5
I257 E5
E
I258 E5
I259 E5
I260 D7
I261 A6
I262 B6
I263 B6
I264 A2
E_14710_029.eps
020904
8
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