W83791G Datasheet, PDF (95/99 Pages) Winbond – Winbond H/W Monitoring IC

W83791D/G
Temperature Sensing
PWM Circuit for FAN1-3 speed control
VREF
T1
T2
T3
R47 R
10K 1%
R49 R
10K 1%
R53 R
10K 1%
RT1
10K 1%
THERMISTOR
RT2
10K 1%
THERMISTOR
RT3
10K 1%
THERMISTOR
GNDA
(for system)
(for cpu1)
(for cpu2)
Measuring CPU temperature by either
thermistor or diode.
VREF
T2
GNDA
R60
R
30K 1%
CAPACITOR
C9
3300p
D+
(from PII/PIII CPU)
D-
VSB
R45
R
47K/791D
PWMOUT1/D1
R51
R
0
R44 R
4.7K
R46 R
1K
Q3
MOSFET N
2N7002
R45,R61 in order to trap
address be A0=1,A1=0
R54 R
4.7K
R55 R
1K
PWMOUT2/D0
R58
R
0
R61
R
47K/791D
Q5
MOSFET N
2N7002
Q2
PNP
3906
C7
+
47u
Q4
PNP
3906
+ C8
47u
+12V
D1
DIODE
1N4148
JP1
3
2
1
HEADER 3
+12V
D2
DIODE
1N4148
JP2
3
2
1
HEADER 3
R48
R
4.7K
R50 R
27K
R56
R
4.7K
R57 R
27K
R52
R
10K
R59
R
10K
VREF
T2
R63
R
10K 1%
RT4
10K 1%
THERMISTOR
GNDA
(for cpu2)
OUT3/VID90
R67
R
0
R62
R
4.7K
R64 R
1K
Q7
MOSFET N
2N7002
Q6
PNP
3906
+ C10
47u
+12V
D3
DIODE
1N4148
JP3
3
2
1
HEADER 3
R65
R
4.7K
R66 R
27K
R68
R
10K
FAN1IN
FAN2IN
FAN3IN
PWM Circuit for FAN4-5 speed control when
select these pin to PWMOUT/FAN function
PWMOUT4
R75
R
0
R69
R
4.7K
R70 R
1K
Q9
MOSFET N
2N7002
Q8
PNP
3906
+ C11
47u
+12V
D4
DIODE
1N4148
JP4
3
2
1
HEADER 3
R71
R
4.7K
R73
R
27K
R76
R
10K
FAN4IN
PWMOUT5
R81
R
0
R77
R
4.7K
R78 R
1K
Q11
MOSFET N
2N7002
Q10
PNP
3906
+ C12
47u
+12V
D5
DIODE
1N4148
JP5
3
2
1
HEADER 3
R79
R
4.7K
R80 R
27K
R82
R
10K
FAN5IN
- 89 -
Select VID Table
VSB
R72
R
47K /791D
R74
47K /791D
R
OUT3/VID90
OUT3/VID90
Select one of the two VID Table setting.
0:Old VID Table(VRM 8.3)
1:New VID Table(VRM 9.0)
WINBOND ELECTRONICS CORP.
Title
W83782D-W83791D Application Circuit
Size
Document Number
Custom
Date:
Tuesday, May 22, 2001
Sheet
Rev
0.2
2
of
5
Publication Release Date: April 14, 2006
Revision 1.1