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3-20-2000_10:15 33
VRM 8.4
IFB_Q
Q21
5
6
7
8
3
2
1
4
VID3
VID0
VID2
VID1
VID[3:0]
3
C472
2200UF
12
C471
1200UF
12
C469
1200UF
12
C468
1200UF
12
R71
5.1-5%
OUTEN
VRM_PWRGD
4,8,9,36
2200UF
C100
21
C93
2200UF
12
2200UF
C103
21
1200UF
C87
21
C111
1200UF
12
1200UF
C107
21
R55
8.2K
R53
5.6K
VRM_COMP
VRM_SS
VRM_IFB
VRM_FAULT
VRM_VFB
VRM_COMP_R
R80
10K
PVCC_R
C72
0.01UF
12
C90
0.1UF
C73
150PF
C75
0.1UF
C86
0.1UF
10UF
C140
21
C74
0.01UF
C71
1000PF
1UF-X7R
C118
21
1UF-X7R
C119
12
VR3
18
17
16
15
14
19
6
9
4
3
7
13
20
8
1
5
2
12
10
11
VRM_IMAX
ETQP6F0R8L
1.0UH-20A
L18
1UF-X7R
C97
21
C82
1200UF
12
C467
1200UF
12
C470
1200UF
12
C110
2200UF
12
JP6 JP10 JP7JP8
DO3316P-331HC
0.33UH
L19
VRM_VCC5
Q2
5
6
7
8
3
2
1
4
Q3
5
6
7
8
3
2
1
4
Q5
5
6
7
8
3
2
1
4
Q4
5
6
7
8
3
2
1
4
1K
R54
VRM_G2
VRM_G1
R65
20
R332
220
IRF7811A
G1
S1
S2
S3
D1
D2
D3
D4
+
+
+
+
DRAWN BY:
LAST REVISED: SHEET:
FOLSOM, CALIFORNIA 95630
1900 PRAIRIE CITY ROAD
87 6 54 32 1
A
B
C
D
12345678
D
C
B
A
PCG PLATFORM DESIGN
REV:
0.5
PROJECT:
OF 40
TITLE: INTEL(R) 820E CHIPSET 2 DIMM FCPGA REFERENCE BOARD
R
PCG AE Camino2
VCC3_3
+
+
+
+
+
+
VCCVID
VCC5
VCC12
+
+
+
+
LTC1753
SENSE
SS
SGND
GND
VCC
PVCC
COMP
VID4
VID3
VID2
VID1
VID0
OUTEN IMAX
PWRGD
FAULT#
G1
G2
IFB
VFB
VCC5
+
+
+
+
+
IRF7811A
G1
S1
S2
S3
D1
D2
D3
D4
IRF7811A
G1
S1
S2
S3
D1
D2
D3
D4
IRF7811A
G1
S1
S2
S3
D1
D2
D3
D4
IRF7811A
G1
S1
S2
S3
D1
D2
D3
D4
VRM
Sanyo 4SP2200M
VRM requirements are based on VRM8.4 spec .
Place caps next to output FETs.
No Stuff C86
C82,C87,C107,C111,C467-C471 must support >11A of RMS current.
C118, C119 must be next to drain of Q2,Q3