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
MHF+2805D
MHF+2812D
MHF+2815D
PARAMETER
OUTPUT VOLTAGE
CONDITIONS
MIN
4.95
4.92
—
—
TYP
5.00
5.00
1.2
—
MAX
5.05
5.08
1.92
12
MIN
11.88
11.82
—
—
TYP
12.00
12.00
0.625
—
MAX
12.12
1218
1.125
15
MIN
14.85
14.78
—
—
TYP
15.00
15.00
0.500
—
MAX
15.15
15.23
0.900
15
UNITS
+V
OUT
VDC
–V
OUT
1
OUTPUT CURRENT
OUTPUT POWER
V
V
= 16 to 40 VDC
= 16 to 40 VDC
A
W
IN
IN
1
OUTPUT RIPPLE
10 kHz - 2 MHz
—
—
—
—
—
—
—
30
60
5
—
20
—
6
80
—
—
—
—
—
—
—
30
60
5
—
20
—
3
80
—
—
—
—
—
—
—
30
50
5
—
20
—
3
80
mV p-p
mV
VOLTAGE
V
Tc = –55°C to +125°C
120
120
120
OUT
LINE REGULATION
Vin = 16 to 40 VDC
LOAD REGULATION
BALANCED +V
50
80
50
100
7.5
50
100
50
100
6
50
100
50
100
6
OUT
LOAD
BALANCED +V
LOAD –V
NEGATIVE V
–V
OUT
OUT
mV
%
OUT
2
CROSS REGULATION
OUT
INPUT VOLTAGE
NO LOAD TO FULL
INPUT CURRENT
CONTINUOUS
TRANSIENT 50 msec
NO LOAD
16
—
—
—
—
—
—
77
28
—
20
540
6
20
40
79
40
50
40
600
12
50
80
—
16
—
—
—
—
—
—
76
28
—
25
645
5
35
50
83
40
50
16
—
—
—
—
—
—
76
28
—
25
638
5
35
50
84
40
50
VDC
V
50
50
FULL LOAD
754
12
60
100
—
754
12
60
100
—
mA
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
INPUT RIPPLE
CURRENT
EFFICIENCY
mA p-p
%
3
LOAD FAULT
SHORT CIRCUIT
POWER DISSIPATION
—
—
3
7.5
6
30
—
—
3
7.5
6
50
—
—
3
7.5
6
50
W
ms
4
RECOVERY
5
STEP LOAD RESP.
50% – 100% – 50%
BALANCED LOADS
+V
–V
–600
–600
—
200
150
150
600
600
500
–600
–600
—
300
100
200
600
600
400
–600
–600
—
300
100
200
600
600
500
OUT
TRANSIENT
mV pk
μs
OUT
4
RECOVERY
STEP LINE RESP.
16 – 40 – 40 VDC
6
V
TRANSIENT
RECOVERY
DELAY
–800
600
800
–750
550
750
–750
550
750
mV pk
OUT
4
—
—
0
0.8
12
100
1.2
20
250
—
—
0
0.8
12
200
1.2
25
750
—
—
0
0.8
12
200
1.2
25
750
ms
ms
mV pk
START-UP
7
OVERSHOOT
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:
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.
+Po = 50% to 10% and –Po = 50%
7. Input step transition time <100 μs.
+Po = 50% and –Po = 50% to 10%
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Rev K - 20060613
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