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17. Switch Mode Power Supply (SMPS) R764349
SMPS Control diagram
8
-
A
M
u
D
e m u
E
A 0
A 1
A 2
_1
F A N
0
_2
F A N
1
_3
F A N
2
+15V
3
+30V
4
+12V
5
+5V
6
+3.3V
7
Q1
V_
SI N
MICR_SW
TILT_SW
PW
R
G O O D
_
C
p
o m
a r a
V_
SI N
3
3 V
+
.
5 V
+
3 0 V
+ +
Image 17-5
SMPS control diagram-Inputs
134
C h
l
a n n e
l
g
n a
o
u e
l ti p l
/
e x e r
l ti p l
e x e r
V_ADC
Z
8
B I T
-
M I C R O
C O N T R O L L ER
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
to
r
PW
R
G O O D
_
+
D240
Q240
+5VA
Comparator
I1
Voltage
N T C
L A M P
follower
_
I1
T
A M B
I N
_
_
V_DAC
local_SDA
local_SCL
SCL_STBY
P1.0
SDA_STBY
P1.1
P1.2
P1.3
FAN_CTRL
P1.4
P1.5
P1.6
P1.7
EEPROM
I5
A 0
SD A
A 1
SC L
A 2
W P
SMPS R764349
MicroProcessor Control Diagram/1
Switch
ERROR
Q1
8 -Bit A/D &
D/A converter
A 0
A 1
A 2
0
1
2
3
8-Channel
Analogue
Multiplexer/
Demultiplexer
E
A0
A1
A2
0
Z
1
2
3
4
5
6
7
R5976820 SLM R12+ PERFORMER 08/03/2005
FAN_4_CTRL
FAN_5_CTRL
FAN_2_CTRL
FAN_3_CTRL
RES_IN
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