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 × 12A Output Current
February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 7
Characteristic Curves
The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynx
TM
at 0.6Vo and 25
o
C.
EFFICIENCY, η (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, I
O
(A) AMBIENT TEMPERATURE, T
A
O
C
Figure 1. Converter Efficiency versus Output Current.
Figure 2. 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
(20mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 3. Typical output ripple and noise (C
O
=
2×0.1uF+2×47uF ceramic, V
IN
= 12V, I
o
= I
o1,max,
I
o2,max,
).
Figure 4. Transient Response to Dynamic Load Change from
50% to 100% on one output at 12Vin,
Cout=2x47uF+7x330uF
,
CTune=12nF
,
RTune=300
OUTPUT VOLTAGES ON/OFF VOLTAGE
V
O
(V) (200mV/div) V
ON/OFF
(V) (5V/div)
OUTPUT VOLTAGES INPUT VOLTAGE
V
O
(V) (200mV/div) V
IN
(V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 5. Typical Start-up Using On/Off Voltage (Vin=12V, I
o
=
I
o1,max,
I
o2,max,
).
Figure 6. Typical Start-up Using Input Voltage (V
IN
= 12V, I
o
=
I
o1,max,
I
o2,max,
).
50
55
60
65
70
75
80
85
90
2x0 2x2 2x4 2x6 2x8 2x10 2x12
Vin=4.5V
Vin=14V
Vin=12V
0
2
4
6
8
10
12
55 60 65 70 75 80 85
Derating curve applies
to Both Outputs