Data Sheet

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
FDMF6823A • Rev. 1.0.3 9
FDMF6823A — Extra-Small, High-Performance, High-Frequency DrMOS Module
Typical Performance Characteristics
Test Conditions: V
IN
=12 V, V
OUT
=1 V, V
CIN
=5 V, V
DRV
=5 V, L
OUT
=250 nH, T
A
=25°C, and natural convection cooling,
unless otherwise specified.
Figure 12. Power Loss vs. Output Inductor Figure 13. Driver Supply Current vs. Switching
Frequency
Figure 14. Driver Supply Current vs. Driver Supply
Voltage
Figure 15. Driver Supply Current vs. Output Current
Figure 16. UVLO Threshold vs. Temperature Figure 17. PWM Threshold vs. Driver Supply Voltage
0.975
0.980
0.985
0.990
0.995
1.000
1.005
200 250 300 350 400 450 500
Normalized Module Power Loss
Output Inductor, L
OUT
(nH)
V
IN
= 12V, V
DRV
& V
CIN
= 5V, F
SW
= 300kHz, V
OUT
= 1V, I
OUT
= 30A
10
20
30
40
50
60
70
100 200 300 400 500 600 700 800 900 1000 1100
Driver Supply Current, I
DRV
& I
CIN
(mA)
Module Switching Frequency, F
SW
(kHz)
V
IN
= 12V, V
DRV
& V
CIN
= 5V, V
OUT
= 1V, I
OUT
= 0A
14
16
18
20
22
24
26
4.0 4.5 5.0 5.5 6.0
Driver Supply Current, I
DRV
& I
CIN
(mA)
Driver Supply Voltage, V
DRV
& V
CIN
(V)
V
IN
= 12V, V
OUT
= 1V, F
SW
= 300kHz, I
OUT
= 0A
0.97
0.98
0.99
1.00
1.01
1.02
1.03
0 5 10 15 20 25 30 35 40 45 50 55
Normalized Driver Supply Current
Module Output Current, I
OUT
(A)
V
IN
= 12V, V
DRV
& V
CIN
= 5V, V
OUT
= 1V
F
SW
= 300kHz
F
SW
= 1000kHz
2.6
2.7
2.8
2.9
3.0
3.1
3.2
-55 0 25 55 100 125 150
Driver IC Supply Voltage, V
CIN
(V)
Driver IC Junction Temperature, T
J
(
o
C)
UVLO
UP
UVLO
DN
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
4.50 4.75 5.00 5.25 5.50
PWM Threshold Voltage, V
PWM
(V)
Driver IC Supply Voltage, V
CIN
(V)
V
IH_PWM
T
A
= 25°C
V
TRI_HI
V
TRI_LO
V
IL_PWM
V
HIZ_PWM