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.
TRIPLE OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
MHF+28512T
MHF+28515T
CONDITION
MAIN
+ AUXILIARY
– AUXILIARY
MAIN
MIN
4.95
11.64
11.64
0
TYP
5.0
12.0
12.0
—
MAX
5.05
12.36
12.36
1.5
MIN
4.95
14.55
14.55
0
TYP
5.0
15.0
15.0
—
MAX
5.05
15.45
15.45
1.5
UNITS
VDC
2
OUTPUT CURRENT
+ AUXILIARY
– AUXILIARY
TOTAL
—
—
—
—
—
—
—
—
0.416
0.416
2.125
7.5
—
—
—
—
—
—
—
—
0.333
0.333
2.0
A
3
OUTPUT POWER
MAIN
7.5
+ AUXILIARY
– AUXILIARY
TOTAL
—
—
—
—
—
—
5
5
15
—
—
—
—
—
—
5
5
15
W
OUTPUT RIPPLE
VOLTAGE
LINE REGULATION
10 kHz to 2 MHz
10 kHz to 2 MHz
MAIN
MAIN
AUXILIARY
—
—
—
—
—
—
—
16
—
20
30
25
120
25
120
—
28
60
90
75
240
75
240
600
48
—
—
—
—
—
—
—
16
20
30
25
150
25
150
—
28
60
112
75
300
75
300
600
48
mV p-p
mV
4
V
= MIN. TO MAX.
AUXILIARY
MAIN
AUXILIARY
IN
LOAD REGULATION
4, 5
mV
6
CROSS REGULATION
INPUT VOLTAGE
– AUXILIARY
CONTINUOUS
TRANSIENT 120 ms
mV
VDC
V
1
—
80
—
—
80
INPUT CURRENT
NO LOAD -55 - +25°C
—
20
35
—
20
35
NO LOAD +125°C
INHIBITED
10 kHz to 10 MHz
—
—
—
74
30
3
20
76
45
5
50
—
—
—
—
74
30
3
20
76
45
5
50
—
mA
4
INPUT RIPPLE CURRENT
EFFICIENCY
mA p-p
%
7
LOAD FAULT
POWER DISSIPATION
4
MAIN
—
—
—
—
12
12
—
—
—
—
12
12
W
AUXILIARY
TRANSIENT
STEP LOAD
4, 8, 9
MAIN
—
—
—
—
—
—
—
5
850
950
8
—
—
—
—
—
—
—
5
850
950
8
RESPONSE
mV pk
AUXILIARY
RECOVERY MAIN
RECOVERY AUX.
DELAY EACH OUTPUT
ms
ms
2
3
2
3
4
10
25
10
25
START-UP
Notes
1. Guaranteed, not tested
2. The sum of the 12 volt auxiliary output currents may not exceed 625 mA.
The sum of the 15 volt auxiliary output currents may not exceed 500 mA.
3. The sum of the auxiliary output power may not exceed 7.5 watts.
4. Case temperature –55°C to +125°C.
6. Cross regulation only occurs between the two auxiliaries and is measured on
–aux. +5 is held constant at 1.0 A. Cross regulation is specified for two
conditions:
Negative aux.= 3.76 W; positive aux.= 0.37 W to 3.76 W.
Negative aux. = 0.37 W to 3.76 W; positive aux. = 3.76 W.
7. Load fault = <0.05 Ω.
5. Load regulation for the +5 is specified at 0.0 to 1.5 A with the aux. both held
at 3.76 W (313 mA for the 12, 250 mA for the 15). Load regulation for the
aux. is specified as both aux. from 0.0 to 3.76 W (313 mA for 12, 250 mA
for 15) at the same time with the +5 held at 1.5 A.
8. Transition time is 2 – 10 μs.
9. Time to settle to within 1% of Vout final value.
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Rev K - 20060613
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