Data Sheet
December 6, 2010
Naos Raptor 3A: Non-isolated DC-DC Power Modules
4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 3A output current
Characteristic Curves (continued)
The following figures provide thermal derating curves for the Naos Raptor 3A module at 2.5Vout and at 25ºC.
100
95
4
OUTPUT CURRENT, Io (A)
EFFICIENCY,
η
(%)
90
Vin = 4.5V
85
80
75
70
0
0.5
1
1.5
2
2.5
3
Vin = 12V
Vin = 14V
3
NC
2
1
25
35
45
55
65
O
75
85
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
C
Figure 19. Converter Efficiency versus Output Current.
OUTPUT VOLTAGE
OUTPUT CURRENT,
Figure 20. Derating Output Current versus Ambient
Temperature and Airflow.
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 21. Typical output ripple and noise (V
IN
= 12V, I
o
= I
o,max
).
OUTPUT VOLTAGE
Figure 22. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with V
IN
=12V.
OUTPUT VOLTAGE
INPUT VOLTAGE
V
O
(V) (1V/div)
ON/OFF VOLTAGE
V
ON/OFF
(V) (5V/div)
TIME, t (1ms/div)
V
IN
(V) (5V/div)
V
O
(V) (1V/div)
TIME, t (1ms/div)
Figure 23. Typical Start-up Using On/Off Voltage (I
o
=
I
o,max
).
Figure 24. Typical Start-up Using Input Voltage (V
IN
=
12V, I
o
= I
o,max
).
LINEAGE
POWER
9
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
