FAN5093 Datasheet, PDF (9/17 Pages) Fairchild Semiconductor – Two Phase Interleaved Synchronous Buck Converter for VRM 9.x Applications

PRODUCT SPECIFICATION
Application Circuit
+12V
D1
D2
+5V
R11
R10
C6
U1
C8
FAN5093
18 _VCC
C7
BOOTB ¹²
11
HDRVB
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
LDRVB ⁸
PGND B ⁹
13
BOOTA
HDRVA ¹⁴
SWA ¹⁵
LDRVA ¹⁷
PGNDA ¹⁶
VFB ²⁴
FAN5093
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 70A VRM 9.x Desktop Application
Table 2. FAN5093 Application Bill of Materials for Figure 2
Reference QTY
Description
U1
1 IC, PWM, FAN5093
Q1-8
8 NFET, 30V, 50A, 9mΩ
D1, 2, 3
3 DIOS, 40V, 500mA
L1, 2
2 IND, 850nH, 30A, 0.9mΩ
L3
opt IND, 750nH, 20A, 3.5mΩ
R1-4, 9
5 4.7Ω, 5%
R5-8
4 2.2Ω, 5%
R10
1 10Ω, 5%
R11
1 10K, 5%
R12
1 75.0K, 1%
R13
1 13.3K, 1%
R14
1 56.2K, 1%
C1-6
6 1.0µf, 25V, 10%, X7R
C7-10
4 0.1µf, 16V, 10%, X7R
Cin
4 1500µf, 16V, 20%,12mΩ, Aluminum Electrolytic
Cout
8 2200µf, 6.3V, 20%, 12mΩ, Aluminum Electrolytic
Manufacturer / Number
Fairchild FAN5093
Fairchild FDD6696
Fairchild MBR0540
Inter-Technical SCTA5022A-R85M
Inter-Technical SC4015-R75M
Rubycon 16MBZ1500M
Rubycon 6.3MBZ2200M
REV. 1.1.0 3/27/03
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