5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
+1.05V_VCCP_P
+1.05V_VCCP_P
EN2
REF
+1.05V_VCCP_P
+1.05V_VCCP_P
+1.05V_VCCP_P
+1.05V_VCCP_P
+1.05V_VCCP_P
+1.05V_VCCP_P
+1.05V_VCCP_P
1.05V_DL_2
1.05V_DH
1.05V_DL_1
EN2
1.25V_DH
1.25V_DL
1.25V_LX
1.05V_RUN_ON
32
RUN_ON
24,31,33,44,53
1.05V_RUN_PWRGD
44
1.25V_RUN_PWRGD
44
1.25V_GFX_PCIE_ON
31
+3.3V_ALW
+3.3V_SUS
+5V_VCC2
+PWR_SRC
+5V_VCC2
+1.25V_RUN
+5V_ALW
+1.05V_VCCP
+3.3V_ALW
+3.3V_RTC_LDO
+DC2_PWR_SRC
1.05V_LX
+1.25V_GFX_PCIe
+1.25V_RUN
+15V_ALW
+5V_ALW2
+1.25V_RUN
+3.3V_RTC_LDO
Title
Size
Document Number
Rev
Date:
Sheet
of
QUANTA
COMPUTER
JM7B
2A
1.25V & 1.05V (MAX8778)
48
57
Thursday, September 14, 2006
Title
Size
Document Number
Rev
Date:
Sheet
of
QUANTA
COMPUTER
JM7B
2A
1.25V & 1.05V (MAX8778)
48
57
Thursday, September 14, 2006
Title
Size
Document Number
Rev
Date:
Sheet
of
QUANTA
COMPUTER
JM7B
2A
1.25V & 1.05V (MAX8778)
48
57
Thursday, September 14, 2006
1.25V +/- 5%
Thermal Design Current: 2A
Maximum Current: 3A
OCP:3.75A
Frequency Select (Ton)
GND - 400kHz/500kHz
Ref (or open) - 400kHz/300kHz **
Vcc - 200kHz/300kHz
This Reference Schematic to be used for Mainstream Discrete Graphics Down solutions
ONLY.
Treat the
+1.25V_SRC_M rail
the same as
+1.25V_RUN on
non-AMT platforms.
Treat the M_ON enable
signal the same as RUN_ON
on non-AMT platforms.
Change the
"1.05V_1.25V_MPWRGD"
signal name to
"1.25V_RUN_PWRGD" on
non-AMT platform.
NOTE II: feedback network modification
for different output voltage setting
Feedback divider parameters should
be adjusted by finalized GPU voltage
specs
For 1.1V/1.0V output
in default parameters
For fixed 1.0V output
depop R102, R103, R108, R109,
R110, C139 and Q3.
Maximum Current:16.1A
1.05V +/- 5%
Thermal Design Current: 11A
OCP: 20.13A
9
11
17
18
18
48
48
48
48
48
74
74
PQ54
2N7002W-7-F_NC
PQ54
2N7002W-7-F_NC
2
3
1
+
PC44
10U/25V/1206_NC
+
PC44
10U/25V/1206_NC
1
2
PR220
0
PR220
0
1
2
PC197
0.1U/25V/0603
PC197
0.1U/25V/0603
1
2
PQ53
2N7002W-7-F_NC
PQ53
2N7002W-7-F_NC
2
3
1
+
PC183
10U/25V/1206
+
PC183
10U/25V/1206
1
2
PJP4
POWER_JP
PJP4
POWER_JP
1
2
PR198
0
PR198
0
1
2
PR221
162K/F
PR221
162K/F
1
2
PQ13
SI7336ADP
PQ13
SI7336ADP
4
8
7
6
2
3
5
1
9
PR31
0/0805
PR31
0/0805
1
2
T61
PAD T61
PAD
PL6
MPO104-1R0
PL6
MPO104-1R0
1
2
PC189
0.1U/25V
PC189
0.1U/25V
1
2
PL4
SIL104R-7R0PF
PL4
SIL104R-7R0PF
PC202
470P/50V/0603_NC
PC202
470P/50V/0603_NC
1
2
PR232
470K_NC
PR232
470K_NC
1
2
S1
G
1
D1
D1
PQ49A
SI4804BDY-T1-E3
S1
G
1
D1
D1
PQ49A
SI4804BDY-T1-E3
2
7
8
1
+
PC37
10U/25V/1206
+
PC37
10U/25V/1206
1
2
PC186
0.1U/25V/0603
PC186
0.1U/25V/0603
1
2
PR213
0
PR213
0
1
2
PC217
0.1U/50V/0603_NC
PC217
0.1U/50V/0603_NC
1
2
PC39
2200P/50V
PC39
2200P/50V
1
2
PC41
10U/6.3V/1206
PC41
10U/6.3V/1206
1
2
PR196
1.91K/F
PR196
1.91K/F
1
2
PR201
1.5K/F
PR201
1.5K/F
1
2
PR219
0_NC
PR219
0_NC
1
2
PC191
1U/10V/0603
PC191
1U/10V/0603
1
2
PC182
2200P/50V
PC182
2200P/50V
1
2
+
PC33
0.1U/25V/0603
+
PC33
0.1U/25V/0603
1
2
PC168
0.1U/25V/0603
PC168
0.1U/25V/0603
1
2
PR253
0
PR253
0
1
2
+
PC178
220U/2.5V
+
PC178
220U/2.5V
1
2
PJP5
POWER_JP
PJP5
POWER_JP
1
2
+
PC45
10U/25V/1206_NC
+
PC45
10U/25V/1206_NC
1
2
PR200
100K/F
PR200
100K/F
1
2
PR32
0/0805
PR32
0/0805
1
2
PR214
0_NC
PR214
0_NC
1
2
PR223
0
PR223
0
1
2
PC38
0.1U/25V/0603
PC38
0.1U/25V/0603
1
2
PC188
0.1U/25V/0603
PC188
0.1U/25V/0603
1
2
+
PC42
330U/2.5V
+
PC42
330U/2.5V
1
2
R136
0/1206
R136
0/1206
1
2
PC40
0.1U/25V/0603
PC40
0.1U/25V/0603
1
2
PR215
0
PR215
0
1
2
PR199
220K/F
PR199
220K/F
1
2
PR224
0_NC
PR224
0_NC
1
2
PC190
1U/10V/0603
PC190
1U/10V/0603
1
2
PJP2
POWER_JP
PJP2
POWER_JP
1
2
+
PC36
10U/25V/1206
+
PC36
10U/25V/1206
1
2
PR231
100K_NC
PR231
100K_NC
1
2
PR211
0
PR211
0
1
2
PU11
ISL6236
PU11
ISL6236
REF
1
TO
N
2
VCC
3
ONL
D
O
4
RTC
5
VIN
6
LD
O
7
LD
O
R
EFIN
8
BYP
9
OUT1
10
FB1
11
ILIM1
12
PGOOD1
13
EN1
14
DH1
15
LX1
16
BST1
17
DL
1
18
VDD
19
SECFB
20
GND
21
PGND
22
DL
2
23
BST2
24
LX2
25
DH2
26
EN2
27
PGOOD2
28
SKIP#
29
OUT2
30
ILIM2
31
REFIN2
32
PAD
33
PAD
34
PR222
178K/F
PR222
178K/F
1
2
PQ14
FDS8880_NL_NC
PQ14
FDS8880_NL_NC
4
8
7
6
2
3
5
1
PC195
0.1U/25V/0603
PC195
0.1U/25V/0603
1
2
PJP25
Jump20X10
PJP25
Jump20X10
1
1
2
2
S1
G
1
D1
D1
PQ49B
SI4804BDY-T1-E3
S1
G
1
D1
D1
PQ49B
SI4804BDY-T1-E3
4
5
6
3
PR197
100K/F_NC
PR197
100K/F_NC
1
2
PJP21
POWER_JP
PJP21
POWER_JP
1
2
PR208
10/0603_NC
PR208
10/0603_NC
1
2
+
PC43
330U/2.5V
+
PC43
330U/2.5V
1
2
PQ12
FDS6294_NL
PQ12
FDS6294_NL
4
8
7
6
2
3
5
1
PR233
100K_NC
PR233
100K_NC
1
2
PJP3
POWER_JP
PJP3
POWER_JP
1
2