Intel 815 - 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:
int
e
l
VID1
VID0
VID3
VID4
VID2
VRM_PWRGD 35
VTTPWRGD5#31
VID[4:0]3
VCC5
VCC12
VCC5
VCCVID
V1_8SB
VCC3SBY
VCC3_3
R343
1k
1 2
C456
1.0UF
12
R334
80K 1%
1 2
R332
38k 1%
1 2
R333
0
1 2
R37
10
12
C448
0.001uF
12
L13
1.2uH
1 2
L9
1.7uH
1 2
C117
10uF
12
C115
3300uF
12
C78
3300uF
12
C76
4.7uF
12
C27
1.0UF
12
C66
0.1UF
12
R335
0.004
12
C442
0.001uF
1 2
C446
100pF
12
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
12
C453
0.1uF
12
C440
0.1UF
12
C439
0.1UF
12
C441
4.7uF
12
C443
820uF
12
C444
820uF
12
C451
1000uF
12
C449
820uF
12
C445
1000uF
12
C450
820uF
12
R328??
12
R324
220
1 2
R325
220
1 2
R329??
12
R336
22 1%
1 2
R337
28 1%
1 2