Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
CONDITIONS
+V
OUT
–V
OUT
OUTPUT CURRENT
1
OUTPUT POWER
1
OUTPUT RIPPLE
VOLTAGE ±V
OUT
LINE REGULATION
Vin = 16 to 40 VDC
LOAD REGULATION
V
IN
= 16 to 40 VDC
V
IN
= 16 to 40 VDC
10 kHz - 2 MHz
Tc = –55°C to +125°C
BALANCED +V
OUT
LOAD
–V
OUT
–V
OUT
BALANCED +V
OUT
LOAD
CROSS REGULATION
2
INPUT VOLTAGE
NO LOAD TO FULL
INPUT CURRENT
MIN
4.95
4.92
—
—
—
—
—
—
—
—
—
16
—
—
—
—
—
—
77
—
—
–600
–600
—
–800
—
—
0
MHF+2805D
TYP
5.00
5.00
±1.2
—
30
60
5
—
20
—
6
28
—
20
540
6
20
40
79
3
7.5
200
150
150
600
0.8
12
100
MAX
5.05
5.08
1.92
12
80
120
50
80
50
100
7.5
40
50
40
600
12
50
80
—
6
30
600
600
500
800
1.2
20
250
MIN
11.88
11.82
—
—
—
—
—
—
—
—
—
16
—
—
—
—
—
—
76
—
—
–600
–600
—
–750
—
—
0
MHF+2812D
TYP
12.00
12.00
±0.625
—
30
60
5
—
20
—
3
28
—
25
645
5
35
50
83
3
7.5
300
100
200
550
0.8
12
200
MAX
12.12
1218
1.125
15
80
120
50
100
50
100
6
40
50
50
754
12
60
100
—
6
50
600
600
400
750
1.2
25
750
MIN
14.85
14.78
—
—
—
—
—
—
—
—
—
16
—
—
—
—
—
—
76
—
—
–600
–600
—
–750
—
—
0
MHF+2815D
TYP
15.00
15.00
±0.500
—
30
50
5
—
20
—
3
28
—
25
638
5
35
50
84
3
7.5
300
100
200
550
0.8
12
200
MAX
15.15
15.23
0.900
15
80
120
50
100
50
100
6
40
50
50
754
12
60
100
—
6
50
600
600
500
750
1.2
25
750
μs
mV pk
ms
ms
mV pk
%
VDC
V
mA
mV
A
W
mV p-p
mV
UNITS
VDC
NEGATIVE V
OUT
CONTINUOUS
TRANSIENT 50 msec
NO LOAD
FULL LOAD
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
SHORT CIRCUIT
3
POWER DISSIPATION
RECOVERY
4
50% – 100% – 50%
+V
OUT
TRANSIENT
–V
OUT
RECOVERY
4
16 – 40 – 40 VDC
TRANSIENT
6
RECOVERY
4
DELAY
OVERSHOOT
7
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT
mA p-p
%
W
ms
STEP LOAD RESP.
5
BALANCED LOADS
mV pk
STEP LINE RESP.
± V
OUT
START-UP
Notes
1. Up to 13.5 watts, 90% (9.6W, 80% for 2805D) of the total output power is
available from either output providing the opposite output is simultaneously
carrying 10% (20% for 2805D) of the total output power. Each
output must carry a minimum of 10% (20% for 2805D) of the total output
power in order to maintain regulation on the negative output.
2. Effect on –Vout for the following conditions:
+Po = 50% to 10% and –Po = 50%
+Po = 50% and –Po = 50% to 10%
3. Indefinite short circuit protection not guaranteed above 125°C (case)
4. Recovery time is measured from application of the transient to point at
which Vout is within regulation.
5. Response of either output with the opposite output held at half of the total
output power.
6. Input step transition time >10 μs.
7. Input step transition time <100 μs.
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