GE Industrial Solutions KNW013-020 (Sixteenth-Brick) - Manual (Page 6)

Data Sheet
August 22, 2011
KNW013-020 Series Power Modules; DC-DC Converters
36 – 75V
dc
Input; 3.3 to 5.0V
dc
Output; 13 to 20A Output Current
LINEAGE POWER 6
Characteristic Curves
The following figures provide typical characteristics for the KNW020A0F (3.3V, 20A) at 25 O C . The figures are
identical for either positive or negative remote On/Off logic.
EF
FI
CI
EN
C
Y
, 
(%)
70
75
80
85
90
95
0 5 10 15 20
Vin=48
Vin=36V
Vin=75V
O
U
TP
UT
CU
RRE
NT
, Io
(A
)
0
5
10
15
20
20 30 40 50 60 70 80 90
2.0 m/s
400 LFM
1.0 m/s
200 LFM
0.5 m/s
100 LFM
NC
OUTPUT CURRENT, I
O
(A) AMBIENT TEMPERATURE, T
A
O C
Figure 7. Converter Efficiency versus Output Current. Figure 10. Derating Output Current versus Local
Ambient Temperature and Airflow.
O
U
TPU
T
VO
LT
AGE
V
O
(V
)
(2
0m
V
/d
iv
)
OUTP
UT
VOLTAGE
On/
O
ff
VOLTA
G
E
V
O
(V
) (1V
/d
iv)
V On
/o
ff
(
V
) (2V
/div)
TIME, t (1 s/div) TIME, t (5ms/div)
Figure 8. Typical output ripple and noise (V IN = V IN,NOM ,
I o = I o,max ).
Figure 11. Typical Start-up Using Remote On/Off,
negative logic version shown (V
IN = V IN,NOM , I o = I o,max ).
OUT
P
UT
CUR
RE
NT
OU
TP
UT
VO
LTA
G
E
Io
(A
) (5A
/d
iv)
V
O
(
V
) (1
00m
V
/d
iv)
OUTPU
T
V
O
LT
AG
E
I
N
PU
T
V
O
L
T
AG
E
V
O
(
V
) (1V
/di
v)
V
IN
(V
) (
20V
/d
iv)
TIME, t (200 s /div) TIME, t (5ms/div)
Figure 9. Transient Response to Dynamic Load
Change, 0.1A/µS, from 75% to 50% to 75% of full load. Figure 12. Typical Start-up Using Input Voltage (V IN =
V IN,NOM , I o = I o,max ).