PRODUCT SPECIFICATION FAN5059
REV. 1.0.4 8/14/03 9
Table 2. FAN5059 Application Bill of Materials
(Components based on Worst Case Analysis—See Appendix for Details)
Notes:
1. Inductor L1 is recommended to isolate the 5V input supply from noise generated by the MOSFET switching, and to comply
with Intel dI/dt requirements. L1 may be omitted if desired.
2. For 17.4A designs using the TO-220 MOSFETs, heatsinks with thermal resistance Θ
SA
< 20°C/W should be used. For designs
using the TO-263 MOSFETs, adequate copper area should be used. For details and a spreadsheet on MOSFET selections,
refer to Applications Bulletins AB-8 and AB-15.
*Refer to Appendix for values.
Reference Manufacturer Part # Quantity Description Requirements/Comments
C1 AVX
TAJB475M010R5
1 4.7µF, 10V Capacitor
C2, C5 Panasonic
ECU-V1C105ZFX
2 1µF, 16V Capacitor
C3-4,C6 Panasonic
ECU-V1H104ZFX
3 100nF, 50V Capacitor
C7-9 Sanyo
6MV1000FA
3 1000µF, 6.3V Electrolytic
C10-12 Any 3 22µF, 6.3V Capacitor Low ESR
C
IN
Sanyo
10MV1200GX
* 1200µF, 10V Electrolytic I
RMS
= 2A
C
OUT
Sanyo
6MV1500GX
* 1500µF, 6.3V Electrolytic ESR ≤ 44mΩ
D1 Motorola
MBRD835L
1 8A Schottky Diode
L1 Any Optional 2.5µH, 8A Inductor DCR ~ 10mΩ
See Note 1.
L2 Any 1 1.3µH, 20A Inductor DCR ~ 2mΩ
Q1 Fairchild
FDB6030L
1 N-Channel MOSFET R
DS(ON)
= 20mΩ @
V
GS
= 4.5V See Note 2.
Q2 Fairchild
FDB7030BL
1 N-Channel MOSFET R
DS(ON)
= 10mΩ @
V
GS
= 4.5V See Note 2.
Q3-5 Fairchild
FDB4030L
3 N-Channel MOSFET
R1 Any 1 33Ω
R2-3 Any 2 4.7Ω
R4 Any 1 10KΩ
R5 Any 1 *
R6 Any 1 10Ω
R7 Any 1 *
U1 Fairchild
FAN5059M
1 DC/DC Controller
