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 KW025A0Y (1.8V, 25A) at 25
o
C. The figures are identical
for either positive or negative remote On/Off logic.
93
90
30
2.0 m/s
(400 lfm)
25
EFFICIENCY,
η
(%)
87
84
81
OUTPUT CURRENT, Io (A)
20
V
IN
= 36V
78
75
72
0
5
10
15
20
25
NC
0.5 m/s
(100 lfm)
V
IN
= 48V
V
IN
= 75V
15
1.0 m/s
(200 lfm)
10
20
30
40
50
60
70
O
80
90
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
C
Figure 19. Converter Efficiency versus Output
Current.
Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow.
On/Off VOLTAGE
OUTPUT VOLTAGE
V
On/off
(V) (5V/div)
V
O
(V) (0.5V/div)
OUTPUT VOLTAGE
V
O
(V) (100mV/div)
TIME, t (1μs/div)
TIME, t (5ms/div)
Figure 20. Typical output ripple and noise (V
IN
=
V
IN,NOM
, I
o
= I
o,max
).
Figure 23. Typical Start-up Using Remote On/Off,
negative logic version shown (V
IN
= V
IN,NOM
, I
o
=
I
o,max
).
OUTPUT CURRENT, OUTPUT VOLTAGE
V
O
(V) (20mV/div)
INPUT VOLTAGE
OUTPUT VOLTAGE
TIME, t (1ms/div)
V
O
(V) (0.5V/div)
Io (A) (10A/div)
V
IN
(V) (50V/div)
TIME, t (5ms/div)
Figure 21. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load.
Figure 24. Typical Start-up Using Input Voltage (V
IN
= V
IN,NOM
, I
o
= I
o,max
).
LINEAGE
POWER
9
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
