Processor voltage regulator, Intel, Vrm 8.5 – Intel 815 User Manual
Page 206
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
Refer to VR Supplier for Layout Guidelines
Processor Voltage Regulator
Stuff only one
INTEL(R) 82815 CHIPSET CUSTOMER REFERENCE BOARD
VRM 8.5
40
1.0
3-26-01
33
Platform Apps Engineering
1900 Prairie City Road
Folsom, CA 95630
REV.
R
Last Revision Date:
Sheet:
of
Title:
intel
VID1
VID0
VID3
VID4
VID2
VRM_PWRGD
35
VTTPW RGD5#
31
VID[4:0]
3
VCC5
VCC12
VCC5
VCCVID
V1_8SB
VCC3SBY
VCC3_3
R343
1k
1
2
C456
1.0UF
1
2
R334
80K 1%
1
2
R332
38k 1%
1
2
R333
0
1
2
R37
10
1
2
C448
0.001uF
1
2
L13
1.2uH
1
2
L9
1.7uH
1
2
C117
10uF
1
2
C115
3300uF
1
2
C78
3300uF
1
2
C76
4.7uF
1
2
C27
1.0UF
1
2
C66
0.1UF
1
2
R335
0.004
1
2
C442
0.001uF
1
2
C446
100pF
1
2
Q25
MOSFET N
Q24
MOSFET N
U73
ADP3170
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VID3
VID2
VID1
VID0
VID25
PWRGD
REF
SD
FB
CS-
CS+
CT
COMP
LRDRV
LRFB
VCC
DRVL
DRVH
PGND
GND
R3264.7
1
2
R3312.2
1
2
R330
2.2
1
2
C447
4700pF
1
2
C453
0.1uF
1
2
C440
0.1UF
1
2
C439
0.1UF
1
2
C441
4.7uF
1
2
C443
820uF
1
2
C444
820uF
1
2
C451
1000uF
1
2
C449
820uF
1
2
C445
1000uF
1
2
C450
820uF
1
2
R328
??
1
2
R324
220
1
2
R325
220
1
2
R329
??
1
2
R336
22 1%
1
2
R337
28 1%
1
2