Gigabyte GA-H55M-S2 - Power Management Circuits; Discrete Power Schematics

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
LOOK 0.6V
CLOSE CHOKE
DDR1_5V
POWER ISSUE
PWR SEQ
OCP : Ipeak=(2xIocsetxRocset)/Rdson
Iocset=21.5uA , Rocset=8.2k
25A max
X2
CPU_VTT
CHOKE08U-15A_1P-2
LOOK 0.6V
VCC1_1=1.15V
N/A
GAIN X10
GA-H55M-S2
1.3
DDR_15V
Custom
24 31Tuesday, October 05, 2010
Gigabyte Technology
Title
Size Document Number Rev
Date: Sheet
of
H
0_6LEVEL_DDR
L
DDR_EN
VIN1_5V
DDR_EN
DDR_EN
L
PHASE1_5V
PHASE1_5V
VTT_L
VTT_H
VTT_L
PHASE1_1V
VTT_BOOT
PHASE1_1V
CPU_VTT_EN
CPU_VTT_EN
0_6LEVEL_DDR[26]
-S4_S5[13,22]
-SLP_S3[13,18,23]
-PSON[18,28]
VTTD_ADJ [26]
5VDUAL
+12V
5VDUAL
DDR_15V
5VSB
VCC
+12V
CPU_VTT
VCC3
5VSB
R352
2.2/6
R878
20K/4/1
C180
0.027u/4/X7R/16V/K
R883
4.7K/4
C153
1u/6/X7R/16V/K
R877
2.2/6
C141
0.1u/4/X7R/16V/K
R424
4.7K/4
R486
2.2/6
BC153
0.1u/4/Y5V/16V/Z
R881
2K/4/1
C146
10p/4/NPO/50V/J
+
1
EC22
560u/FP/D/6.3V/68/8m
C139
1n/4/X7R/50V/K
R425
2.2/6
C131
1u/6/X7R/16V/K
+
1
EC18
560u/FP/D/6.3V/68/8m
R430
20K/4/1/X
R884
2.2K/4/1
C177
1u/4/X5R/6.3V/K
R468
1.27K/4/1
R368
8.2K/4
Q50
2SK3918/TO252/1300pF/7.5m
1 3
2
C151
4.7n/4/X7R/25V/K
R460
2K/4/1
R880
2.2/6
SDM20E40C/0.4A/SOT23
D10
+
1
EC19
560u/FP/D/6.3V/68/8m
R892
8.2K/4/X
BAT54C/SOT23/200mA/X
Q75
G
D
S
Q92
2SK3918/TO252/1300pF/7.5m
1 3
2
U9
ISL6545CBZ/S
7
5
1
8
3
46
2
COMP
VCC
BOOT
PHASE
GND
LG/OCFB
UG
G
D
S
Q91
2SK3918/TO252/1300pF/7.5m
1 3
2
C134
0.1u/4/Y5V/16V/Z
Q93
2SK3918/TO252/1300pF/7.5m
1 3
2
L6
1.2uH/20A/PMU109/W/D
L7
1.2uH/20A/PMU109/W/D
+
1
EC7
820u/FP/D/2.5V/69/7m
+
1
EC8
820u/FP/D/2.5V/69/7m
R448
20K/4/1
C181
1n/4/X7R/50V/K
+
1
EC11
820u/FP/D/2.5V/69/7m
C184
1n/4/X7R/50V/K/X
C179
220p/4/NPO/50V/J
SOT23
Q95
MMBT2222A/SOT23/600mA/40/X
1
3
2
SOT23
Q94
MMBT2222A/SOT23/600mA/40/X
1
3
2
R893
8.2K/4/X
BC201
10u/8/X5R/6.3V/K
C178
0.1u/4/X7R/16V/K
0.1u/4/Y5V/16V/Z
BC199
U12
ISL6545CBZ/S
7
5
1
8
3
46
2
COMP
VCC
BOOT
PHASE
GND
LG/OCFB
UGATE
+
1
EC23
560u/FP/D/6.3V/68/8m
C183
1n/4/X7R/50V/K/X
R879
8.2K/4
BC159
10u/8/X5R/6.3V/K
C185
5.6n/4/X7R/25V/K
Q57
2SK3918/TO252/1300pF/7.5m
1 3
2
Q58
2SK3918/TO252/1300pF/7.5m
1 3
2
R522
22K/4
SOT23
Q77
MMBT2222A/SOT23/600mA/40
1
3
2
D12
BAT54C/SOT23/200mA/X
1
3
2
L8
1.2uH/20A/PMU109/W/D
R894
200/4/1
R464
1K/4/1
R500
22K/4
R458
8.2K/4
R882
0/6
SOT23
Q69
MMBT2222A/SOT23/600mA/40
1
3
2
C160
1u/6/X7R/16V/K
0.1u/4/Y5V/16V/Z
BC200
R875
2.2/6
R876
20K/4/1/X
SOT23
Q89
MMBT2222A/SOT23/600mA/40
1
3
2
L9
0.6u/40A/IMD129/W/D
SOT23
Q65
MMBT2222A/SOT23/600mA/40
1
3
2
CONFIDENTIAL