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 12
Characteristic Curves
The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynx
TM
at 5Vo and 25
o
C.
EFFICIENCY, η (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, I
O
(A) AMBIENT TEMPERATURE, T
A
O
C
Figure 31. Converter Efficiency versus Output Current.
Figure 32. 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 33. 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 34. Transient Response to Dynamic Load Change on
one output from 50% to 100% at 12Vin, Cout=6x47uF,
CTune=470pF & RTune=300
OUTPUT VOLTAGES ON/OFF VOLTAGE V
O
(V) (2V/div) V
ON/OFF
(V) (5V/div)
OUTPUT VOLTAGES INPUT VOLTAGE V
O
(V) (2V/div) V
IN
(V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 35. Typical Start-up Using On/Off Voltage (V IN = 12V, I o
= I
o1,max, I o2,max ).
Figure 36. Typical Start-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=7V
Vin=14V
Vin=12V