MCH SERIES
1.5 WATT
DC/DC CONVERTERS
TYPICAL PERFORMANCE CURVES: Tc = 25°C, full load, Vin = 28 VDC, unless otherwise specified.
90
90
90
80
70
80
80
12 VOLT
12 VOLT
28 VOLT
12 VOLT
70
70
50 VOLT
28 VOLT
28 VOLT
50 VOLT
50 VOLT
60
50
60
50
60
50
40
30
40
30
40
30
0
0.25 0.5
1
1.25 1.5 1.75
0.75
0
0.25 0.5
1
1.25 1.5 1.75
0.75
0
0.25 0.5
OUTPUT POWER
1
1.25 1.5 1.75
0.75
OUTPUT POWER 12 & 15 VOLT SINGLE MODELS
OUTPUT POWER 12 & 15 VOLT DUAL MODELS
ALL 5 VOLT MODELS
EFFICIENCY vs LOAD
EFFICIENCY vs LOAD
EFFICIENCY vs LOAD
FIGURE 4
FIGURE 5
FIGURE 3
0
20
40
60
80
V
IN
50 VDC
12 VDC
FULL LOAD TO HALF LOAD
VOUT
HALF LOAD TO FULL LOAD
100
500µs / div.
MCH2805S
200µs / div.
MCH2805S
1
10
60
LOAD TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
FREQUENCY (kHz)
MCH2815S - Representative of all models
AUDIO REJECTION
FIGURE 7
FIGURE 8
FIGURE 6
V
IN
V
+VOUT FULL LOAD TO HALF LOAD
–VOUT HALF LOAD TO FULL LOAD
IN
50 VDC
12 VDC
+VOUT
V
OUT
–VOUT FULL LOAD TO HALF LOAD
+VOUT HALF LOAD TO FULL LOAD
–VOUT
0
2
4
6
8
10 12 14 16 18
MCH2805S
200µs / div.
MCH2815D
500µs / div.
MCH2815D
TIME (ms)
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
Representative of all 5 volt models
TURN-ON INTO FULL LOAD
FIGURE 9
FIGURE 10
FIGURE 11
5
CRANE [ Crane Aerospace & Electronics. ]
