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