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 SW001A2B91 (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
= 36V
V
I
= 54V
V
I
= 75V
OUTPUT CURRENT, I
o
(A)
On/Off VOLTAGE,
V
ON/OFF
(V) (2V/div)
V
O
(V) (5V/div)
TIME, t (5ms/div)
Figure 7. Converter Efficiency Vs Load at V
o
= 12 V.
1.4
1.2
Figure 10. 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
100
110
3.0 m/s (600 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
Natural Convection
AMBIENT TEMPERATURE, T
A
C
O
V
O
(V) (50mV/div),
I
O
(A) (0.25A/div)
TIME, t (1.0ms/div)
Figure 8. Derating Output Current versus Local
Ambient Temperature and Airflow.
Figure 11. 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 9. Typical Output Ripple and Noise, V
IN
=V
IN,
nom
I
O
=80% of I
O, max.
Figure 12. Typical Start-Up Output Voltage Rise
Characteristic.
LINEAGE
POWER
7
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
