Data Sheet
October 5, 2009
SW/SC001/003 Series DC-DC Power Module:
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Characteristic Curves
(continued)
The following figures provide typical characteristics for the SC001A2B91 (12.0V, 1.2A) at 25ºC. The figures are
identical for either positive or negative Remote On/Off logic.
86
84
OUTPUT VOLTAGE
0.0
0.2
0.4
0.6
0.8
1.0
1.2
88
EFFICIENCY (%)
82
80
78
76
74
72
70
V
I
= 18V
V
I
= 2 7V
V
I
= 36 V
OUTPUT CURRENT, I
o
(A)
On/Off VOLTAGE,
V
ON/OFF
(V) (2V/div)
V
O
(V) (5V/div)
TIME, t (5ms/div)
Figure 25. Converter Efficiency Vs Load.
1.4
1.2
Figure 28. Typical Start-Up Using Remote On/Off,
negative logic version shown.
OUTPUT VOLTAGE, OUTPUTCURRENT
OUTPUT CURRENT, Io (A)
1.0
0 .8
0 .6
0 .4
0 .2
0 .0
0
10
20
30
40
50
60
70
80
90
10 0
110
3 .0 m/ s (6 0 0 f t ./ min.)
2 .0 m/ s (4 0 0 f t ./ min.)
1.0 m/ s (2 0 0 f t ./ min.)
Nat ural Co nvect io n
AMBIENT TEMPERATURE, T
A
C
O
V
O
(V) (50mV/div),
I
O
(A) (0.25A/div)
TIME, t (1.0ms/div)
Figure 26. Derating Output Current versus Local
Ambient Temperature and Airflow.
Figure 29. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
OUTPUT VOLTAGE
V
O
(V) (50mV/div)
TIME, t (1μs/div)
V
O
(V) (2V/div)
TIME, t (100μs/div)
Figure 27. Typical Output Ripple and Noise, V
IN
=V
IN,
nom
I
O
=80% of I
O, max.
Figure 30. Typical Start-Up Output Voltage Rise
Characteristic.
LINEAGE
POWER
10
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
