Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC/DC Converters
28 VOLT INPUT – 1.5 WATT
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
MCH S
INGLE AND
D
UAL OUTPUT MODELS
(
CONT
.)
4
±V
OUT
VOLTAGE CHANGE (%)
±5
V
2
±V
OUT
VOLTAGE CHANGE (%)
2
4
–5 V
20V/div.
V
IN
±12
V
±15
V
–15 V
–12 V
0
0
+15 V
+12 V
+5 V
0 V for –V
OUT
5V/div.
–V
OUT
+V
OUT
-2
-2
0 V for +V
OUT
0
5
10 15 20
25 30 35 40 45
TIME (ms)
MCH2815D
Also representative of MCH2812S & D and MCH2815S
-4
10
20
40
50
30
OUTPUT LOAD (%)
DUAL ISOLATED
50% LOAD +V; 50% TO 10% LOAD –V
AND
50% LOAD –V; 50% TO 10% LOAD +V
-4
90/10 70/30 50/50 30/70 10/90
OUTPUT LOAD (%)
DUAL ISOLATED
90% TO 10% LOAD ON +V
10% TO 90% LOAD ON –V
TURN-ON INTO FULL LOAD
CROSS REGULATION
CROSS REGULATION
F
IGURE
14
1.8
F
IGURE
15
F
IGURE
16
120
1.6
MAXIMUM POWER (W)
15 V
SINGLE
& DUAL
12 V
SINGLE
& DUAL
5V
DUAL
5V
SINGLE
90
TRIP POINT 125%
NARROWBAND
EMISSION LEVEL (dB
μA)
100
80
V
out
NOMINAL %
60
SAFE OPERATING AREA
40
20
70
CE
03
1.4
LI
M
50
IT
1.2
30
1.0
10
0.8
9
10
INPUT VOLTAGE
11
12
ALL MODELS
0
0
20
40
60
80
100
% OF FULL LOAD
120 140
160
.015
0.1
1
FREQUENCY (MHz)
10
50
LOW LINE DROPOUT
OUTPUT VOLTAGE vs. OUTPUT LOAD
MCH FILTERED WITH FMSA
F
IGURE
17
F
IGURE
18
F
IGURE
19
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