Service manual

Schematic Diagrams
Power 3 (71-P2970-002A) B - 29
B.Schematic Diagrams
Power 3
Sheet 28 of 28
Power 3
+5V
GMCHVTT
+1.5V
+5V
+3V
+5V
+5V
+12V
+3V
SB5V
SB5V
SB5V
+3V
+5V
+3V
+5V
+5V
Z2807
Z2804
Z2803
Z2808
Z2802
Z2805
Z2810
Z2806
Z2812
Z2813
Z2809
Z2811
Z2815
Z2816
V2.5
Z2801
Z2814
Z2818
Z2817
Z2819
Z2821
D16 1N4148
AC
R285
10K
R55 0
C5
0.1u
R13
10K_1%
R10 15K
C6
0.1u
R7
1M
PD1
SR140
AC
R11
20K_1%
+
C27
3300u/6.3V_10*25_R
12
+
C28
3300u/6.3V_10*25
12
R17 10
PU2
SC1470
1
2
3
4
5
6
7 8
9
10
11
12
13
14
EN/PSV
VIN
VOUT
VCCA
FBK
PGOOD
GND PGND
DL
VDDP
ILIM
LX
DH
BST
C17
0.1u
PL1
6.8uH
1 2
C3
0.01u
1
2
R3
10K
C26
0.1u
1
2
C22
10u/25V_1206
1
2
PJ1
6mm
1 2
R15 0
C60
0.01u
C61
4.7u/10V_0805
Q2
AP60N03H
G
DS
Q4
AP60N03H
G
DS
C9
100p
1
2
C12
4.7u/10V_0805
1
2
R2 0
R445
2.7K
R443
12K
Q39
2N3904
R446
10K
Q38
2N3906
B
E C
C233
0.1u
G
S
D
Q5
2N7002
G
S D
C59
0.1u
R286
10K
Q23
2N7002
D
G
S
J4
JOPEN_2A
R444
10K
C232
0.1u
C231
0.1u
R280
1K
R279
4.7K
R281
4.7K
D14
SR340
A C
PC1
0.1u
PD2
AS2431AM
C
R
A
U4
CM8561
1 2
34
5
67
8
VIN VOUT
REFENVCCA
GND
GNDGND
GND
R67 2K_1%
+
CF1
4.7u/16V_1206
R68
10K
R184 0
C150
1000p
+
C155
100u/16V_6.3*7
R60
61.9K_1%
+
C158
100u/16V_6.3*7
R59
28K_1%
R62
20K_1%
C152
0.01u
C154
1000p
C151
1000p
CA149
0.1u
+
C156
390u/6.3V_8*10.5
C62
4.7u/10V_0805_R
CA147
0.1u
+
C157
100u/16V_6.3*7
R183
10K_R
CA142
0.1u
CB7
1u
CN12
POWER CONN.
1
2
3
4
5
6
7
89
10
14
13
12
11
15
16
C134
0.01u
C142
0.01u
R284
10K
D15 1N4148
AC
D17 1N4148
AC
C324
0.1u
C323
4.7u/10V_0805_R
Q24
2N7002
D
G
S
G
S
D
Q6
2N7002
G
S D
NORTHWOOD_HI
POWER-ON[22]
PRESCOTT_HI [27]
NORTHWOOD_HI
BOOTSEL[2]
PWROK [6,12,14]
PGOOD1[26]
+12V [12,13,16,17,22,24,25,26,27]
+3V [3,4,5,6,11,12,13,14,15,16,17,19,20,21,22,23,24,26,27]
+5V [4,11,12,13,14,16,17,19,21,22,23,24,25,26,27]
SB5V [3,12,13,14,22,26]
+2.5V
GMCHVTT [5,6]
+1.5V [5,7,11,13,14,15,22]
PGOOD2
PGOOD2
SIOPWROK[22]
NORTHWOOD:1.45V/1.5A
PRESCOTT:1.225V/1.5A
6A
6A
C
E
B
Delay 250ms
P_GND3
P_GND3 P_GND3 P_GND3 P_GND3
P_GND3
P_GND5
P_GND5
P_GND5
P_GND5
P_GND5