Owner's manual

GE
Datasheet
2 × 12A Digital Dual MicroDlynx
TM
: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12AOutput Current
February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 10
Characteristic Curves
The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynx
TM
at 2.5Vo and 25
o
C.
EFFICIENCY, η (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, I
O
(A) AMBIENT TEMPERATURE, T
A
O
C
Figure 19. Converter Efficiency versus Output Current.
Figure 20. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGES
V
O
(V) (30mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
I
O
(A) (5Adiv) V
O
(50mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 21. Typical output ripple and noise (C
O
=
2x0.1uF+2x47uF ceramic, V
IN = 12V, I o = I o1,max, I o2,max ).
Figure 22. Transient Response to Dynamic Load Change on
one output from 50% to 100% at 12Vin,
Cout=3x47uF+2x330uF, CTune=1500pF & RTune = 300
OUTPUT VOLTAGES ON/OFF VOLTAGE V
O
(V) (1V/div) V
ON/OFF
(V) (5V/div)
OUTPUT VOLTAGES INPUT VOLTAGE V
O
(V) (1V/div) V
IN
(V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 23. Typical Start-up Using On/Off Voltage (V IN = 12V, I o
= I o1,max, I o2,max ).
Figure 24. Typical Star
t
-up Using Input Voltage (V IN = 12V, I o =
I
o1,max, I o2,max ).
70
75
80
85
90
95
100
2x0 2x2 2x4 2x6 2x8 2x10 2x12
Vin=4.5V
Vin=14V
Vin=12V
0
2
4
6
8
10
12
55 65 75 85
1m/s
(200LFM)
0.5m/s
(100LFM)
NC
Derating curve applies
to Both Outputs