FAN5059MX Datasheet, PDF (9/18 Pages) Fairchild Semiconductor – High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms

PRODUCT SPECIFICATION
FAN5059
Table 2. FAN5059 Application Bill of Materials
(Components based on Worst Case Analysis—See Appendix for Details)
Reference
C1
C2, C5
C3-4,C6
C7-9
C10-12
C_IN
C_OUT
D1
L1
Manufacturer Part #
AVX
TAJB475M010R5
Panasonic
ECU-V1C105ZFX
Panasonic
ECU-V1H104ZFX
Sanyo
6MV1000FA
Any
Sanyo
10MV1200GX
Sanyo
6MV1500GX
Motorola
MBRD835L
Any
L2
Q1
Q2
Q3-5
R1
R2-3
R4
R5
R6
R7
U1
Any
Fairchild
FDB6030L
Fairchild
FDB7030BL
Fairchild
FDB4030L
Any
Any
Any
Any
Any
Any
Fairchild
FAN5059M
Quantity Description
1
4.7µF, 10V Capacitor
Requirements/Comments
2
1µF, 16V Capacitor
3
100nF, 50V Capacitor
3
1000µF, 6.3V Electrolytic
3
22µF, 6.3V Capacitor
Low ESR
*
1200µF, 10V Electrolytic I_RMS = 2A
*
1500µF, 6.3V Electrolytic ESR ≤ 44mΩ
1
8A Schottky Diode
Optional 2.5µH, 8A Inductor
1
1.3µH, 20A Inductor
1
N-Channel MOSFET
1
N-Channel MOSFET
3
N-Channel MOSFET
DCR ~ 10mΩ
See Note 1.
DCR ~ 2mΩ
R_DS(ON) = 20mΩ @
V_GS = 4.5V See Note 2.
R_DS(ON) = 10mΩ @
V_GS = 4.5V See Note 2.
1
33Ω
2
4.7Ω
1
10KΩ
1
*
1
10Ω
1
*
1
DC/DC Controller
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.
REV. 1.0.4 8/14/03
9