FAN5092MTC Datasheet, PDF (12/20 Pages) Fairchild Semiconductor – High Current System Voltage Buck Converter

FAN5092
PRODUCT SPECIFICATION
Table 1. FAN5092 Application Bill of Materials for Figure 1
Reference
Manufacturer Part # Quantity
Description
Requirements/Comments
C1, C3-5, C7
Panasonic
ECU-V1H104ZFX
5
100nF, 50V Capacitor
C2, C6
CIN
Any
Rubycon
16ZL1000M
2
1µF Ceramic Capacitor
3
1000µF, 16V Electrolytic IRMS = 3.8A @ 65°C
COUT
Sanyo
4SP820M
12 820µF, 4V Oscon
ESR ≤ 12mΩ
D1-3
Fairchild
MBR0520
3
0.5A, 20V Schottky Diode
L1
Coiltronics
Optional 1.5µH, 14A Inductor
DCR ~ 3mΩ. See Note 1.
DR127-1R5
L2-5
Coiltronics
DR127-R47
4
470nH, 19A Inductor
DCR ~ 2mΩ
Q1, Q3, Q5, Q7 Fairchild FDB6035AL 4
Q2, Q4, Q6, Q8 Fairchild FDB6676S
4
N-Channel MOSFET
N-Channel MOSFET with
Schottky
RDS(ON) = 17mΩ @ VGS = 4.5V
RDS(ON) = 6.5mΩ @ VGS = 10V
R1
Any
R2, R9
Any
R3, R10
Any
R4, R11
Any
R5-8, R12-15 Any
R16
Any
R17
Any
1
10KΩ
2
24.9KΩ
2
2KΩ
2
10Ω
8
4.7Ω
1
243Ω
1
200Ω
U1-U2
Fairchild
FAN5092M
1
DC/DC Controller
Notes:
1. Inductor L1 is recommended to isolate the 12V input supply from noise generated by the MOSFET switching. L1 may be
omitted if desired.
2. For a spreadsheet on MOSFET selections, refer to Applications Bulletin AB-8.
Test Parameters
tR
10%
90%
2V
tDT
2V
tF
90%
2V
10%
HIDRV
tDT
2V
LODRV
Figure 2. Output Drive Timing Diagram
12
REV. 1.0.7 6/20/02