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 typical characteristics for the Naos Raptor 20A modules at 1.8Vout and at 25ºC.
100
95
22
20
OUTPUT CURRENT, Io (A)
EFFICIENCY,
η
(%)
90
85
80
75
70
0
5
10
15
20
Vin = 12V
Vin = 4.5V
18
16
14
12
10
8
25
35
45
55
65
O
2m/s
(400LFM)
1.5m/s
(300LFM)
1m/s
(200LFM)
0.5m/s
(100LFM)
NC
Vin = 14V
75
85
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
C
Figure 13. Converter Efficiency versus Output Current.
Figure 14. 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 15. Typical output ripple and noise (V
IN
= 12V, I
o
= I
o,max
).
ON/OFF VOLTAGE
V
ON/OFF
(V) (2V/div)
Figure 16. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with V
IN
=12V.
INPUT VOLTAGE
OUTPUT VOLTAGE
V
IN
(V) (5V/div)
V
O
(V) (500mV/div)
OUTPUT VOLTAGE
V
O
(V) (500mV/div)
TIME, t (1ms/div)
TIME, t (1ms/div)
Figure 17. Typical Start-up Using On/Off Voltage (I
o
=
I
o,max
).
Figure 18. Typical Start-up Using Input Voltage (V
IN
=
12V, I
o
= I
o,max
).
LINEAGE
POWER
7