Data Sheet
March 26, 2008
KW010/015/020/025 Series Power Modules:
36 – 75Vdc Input; 1.2 to 5.0Vdc Output; 10 to 25A Output current
Characteristic Curves
(continued)
The following figures provide typical characteristics for the KW020A0G (2.5V, 20A) at 25
o
C. The figures are identical
for either positive or negative remote On/Off logic.
93
Vin = 36V
90
25.0
OUTPUT CURRENT, Io (A)
EFFICIENCY,
η
(%)
87
84
81
78
75
72
0
4
8
12
16
20
Vin = 48V
Vin = 75V
20.0
2.0 m/s
(400 lfm)
15.0
NC
10.0
0.5 m/s
(100 lfm) 1.0 m/s
(200 lfm)
5.0
0.0
20
30
40
50
60
70
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
C
O
80
90
Figure 13. Converter Efficiency versus Output
Current.
Figure 16. Derating Output Current versus Local
Ambient Temperature and Airflow.
On/Off VOLTAGE
OUTPUT VOLTAGE
V
On/off
(V) (2V/div)
V
O
(V) (1V/div)
OUTPUT VOLTAGE
V
O
(V) (20mV/div)
TIME, t (1μs/div)
TIME, t (5ms/div)
Figure 14. Typical output ripple and noise (V
IN
=
V
IN,NOM
, I
o
= I
o,max
).
OUTPUT VOLTAGE
Figure 17. Typical Start-up Using Remote On/Off,
negative logic version shown (V
IN
= V
IN,NOM
, I
o
= I
o,max
).
OUTPUT CURRENT
TIME, t (1ms/div)
OUTPUT VOLTAGE
V
O
(V) (1V/div)
Io(A) (5A/div)
INPUT VOLTAGE
V
IN
(V) (20V/div)
V
O
(V) (50mV/div)
TIME, t (5ms/div)
Figure 15. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load.
Figure 18. Typical Start-up Using Input Voltage (V
IN
=
V
IN,NOM
, I
o
= I
o,max
).
LINEAGE
POWER
8
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
