Data Sheet
July 28, 2009
Naos Raptor 20A: Non Isolated Power Module:
4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 20A output current
Characteristic Curves
(continued)
The following figures provide thermal derating curves for Naos Raptor 20A modules at 3.3Vout and 25ºC.
100
22
20
95
OUTPUT CURRENT, Io (A)
EFFICIENCY,
η
(%)
18
16
14
12
10
8
25
35
45
55
65
O
90
Vin = 4.5V
Vin = 12V
Vin = 14V
2m/s
(400LFM)
1.5m/s
(300LFM)
1m/s
(200LFM)
0.5m/s
(100LFM)
85
NC
80
0
5
10
15
20
75
85
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
C
Figure 25. Converter Efficiency versus Output Current.
Figure 26. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
OUTPUT CURRENT,
V
O
(V) (200mV/div)
I
O
(A) (5Adiv)
OUTPUT VOLTAGE
V
O
(V) (10mV/div)
TIME, t (1μs/div)
TIME, t (100μs /div)
Figure 27. Typical output ripple and noise (V
IN
= 12V, I
o
= I
o,max
).
V
ON/OFF
(V) (2V/div)
ON/OFF VOLTAGE
Figure 28. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with V
IN
=12V.
INPUT VOLTAGE
OUTPUT VOLTAGE
OUTPUT VOLTAGE
V
O
(V) (1V/div)
TIME, t (1ms/div)
V
O
(V) (1V/div)
V
IN
(V) (5V/div)
TIME, t (1ms/div)
Figure 29. Typical Start-up Using On/Off Voltage (I
o
=
I
o,max
).
Figure 30. Typical Start-up Using Input Voltage (V
IN
=
12V, I
o
= I
o,max
).
LINEAGE
POWER
9
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
