US3018
TYPICAL APPLICATION
(Dual Layout with HIP6018)
R22
12V
L1
C8
R12
C10
R13
C14
5V
C2
C3
1
V12
20
OCSet1
R11
Q3
Q4
UGate1 24
L3
8 V5
(Fault)
Phase1 23
LGate1 22
Vout1
1.8V - 3.5V
C16
R14
C19
C13
R16
R15
R21
10 Fault/Rt
(Rt)
PGnd 21
Vsen1 19
Fb1 18
R17
C15
R19
C12
3.3V
12 Vin2
En 17
(Comp1)
U1
C1
C11
R18
PGood
7
PGood
Q2
15 Gate3
16 Fb3
R5
Vout3
1.5V
VID0 6
VID1 5
VID2 4
VID3 3
VID4 2
C17
C18
R6
Vout4
2.5V
13 Vout2
Fb2
11
Gnd
14
SS
9
R7
R8
3018app2-1.6
5V
C20
C9
Figure 3 - Typical application of US3018 in a dual layout with HIP6018 for an on board DC-DC converter providing
power for the Vcore , GTL+ & Clock supply for the Deschutes and the next generation processor applications.
Components that need to be modified to make the dual layout work for US3018 and HIP6018.
Part #
HIP6018
US3018
R11
O
S
R18
V
O
C9
O
V
C11
V
O
C12
V
O
C19
O
V
C20
V
O
S - Short
O - Open
V - See Unisem or Harris parts list for the value.
Table 2 - Dual layout component table
Rev. 1.4
12/8/00
4-9
UNISEM [ UNISEM ]
