User guide
GE
Data Sheet
20A Analog MicroDLynx
TM
: Non-Isolated DC-DC Power Modules
3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 20A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 8
Characteristic Curves
The following figures provide typical characteristics for the 20A Analog MicroDLynx
TM
at 1.8Vo and 25
o
C.
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
O
C
Figure 13. Converter Efficiency versus Output Current.
Figure 14. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
V
O
(V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
I
O
(A) (10Adiv) V
O
(V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 15. Typical output ripple and noise (C
O
=2X47μF
ceramic, VIN = 12V, Io = Io,max, ).
Figure 16. Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 2x47uF +3x330uF,
CTune=5600pF & RTune=220 ohms
OUTPUT VOLTAGE ON/OFF VOLTAGE
V
O
(V) (500mV/div) V
ON/OFF
(V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V
O
(V) (500mV/div) V
IN
(V) (5V/div)
TIME, t (2ms/div)
TIME, t (2ms/div)
Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Io =
Io,max).
70
75
80
85
90
95
0 5 10 15 20
Vin=3.3V
Vin=14V
Vin=12V
2
6
10
14
18
22
55 65 75 85 95 105
2m/s
(400LFM)
1.5m/s
(300LFM)
1m/s
(200LFM)
0.5m/s
(100LFM)
NC