FAN5098 Datasheet, PDF (9/17 Pages) Fairchild Semiconductor – Two Phase Interleaved Synchronous Buck Converter for AMD Hammer™

PRODUCT SPECIFICATION
Application Circuit
+12V
D1
D2
+5V
R11
R10
C6
U1
C8
FAN5098
18 _VCC
C7
12
BOOTB
HDRVB ¹¹
VID4
VID3
VID2
VID1
VID0
R14
R13
C10
R12
19 _PWRGD
5
4
3
2
1
VID4
VID3
VID2
VID1
VID0
23 _RT
22 _ENABLE/SS
21 _DROOP/E*
20 _{IL IM}
6
BYPASS
C9
7
AGND
SWB ¹⁰
8
LDRVB
PGND B ⁹
13
BOOTA
HDRVA ¹⁴
15
SWA
17
LDRVA
PGNDA ¹⁶
24
VFB
FAN5098
L3
D3
C5
R1
Q1
R2
R3
Q3
R4
Vi n
C1
C2 ^{+ Cin}
Q2
L1
Q4
VCore
R5
R6
R7
R8
R9
Vi n
C3
C4
Q5
Q6
L2
Q7
Q8
+ Cout
Figure 2. Application Circuit for 56A AMD^® Hammer™ Desktop Application
Table 2. FAN5098 Application Bill of Materials for Figure 2
Reference
QTY
Description
U1
1
FAN5098
Q1, 2, 5, 6
4
MOSFET, Nch, 30V, 46A, 16mΩ
Q3, 4, 7, 8
4
MOSFET, Nch, 30V, 55A, 11mΩ
D1, 2, 3
3
SCHOTTKY, 40V, 500mA
L1, 2
2
850nH, 30A, 0.9mΩ
L3
opt 750nH, 20A, 3.5mΩ
R1-9
9
4.7Ω, 5%
R10
1
10Ω, 5%
R11
1
10K, 5%
R12
1
75.0K, 1%
R13
1
4.99K, 1%
R14
1
61.9K, 1%
C1-6
6
1.0µf, 25V, 10%, X7R
C7-10
4
0.1µf, 16V, 10%, X7R
Cin
3
1500µf, 16V, 20%,12mΩ
Cout
7
2200µf, 6.3V, 20%, 12mΩ
Manufacturer / Number
Fairchild FAN5098
Fairchild FDD6690A
Fairchild FDD6680S
Fairchild MBR0540
Inter-Technical SCTA5022A-R85M
Inter-Technical SC4015-R75M
Rubycon 16MBZ1500M
Rubycon 6.3MBZ2200M
REV. 1.0.7 2/18/03
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