Crane Aerospace & Electronics Power Solutions
SMFLHP Single and Dual DC/DC Converters
28 VOLT INPUT – 100 WATT
Electrical Characteristics: –55°C to +125°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS
SMFLHP2805D SMFLHP2812D SMFLHP2815D
MIN TYP MAX MIN TYP MAX MIN TYP MAX
4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15
4.92 5.00 5.08 11.80 12.00 12.18 14.77 15.00 15.23
UNITS
VDC
PARAMETER
CONDITIONS
OUTPUT VOLTAGE
TC = 25°C
+ V
- V
OUT
OUT
2
OUTPUT CURRENT
VIN = 19 TO 40 VDC
EACH OUTPUT
0
0
—
—
11.2
16.0
0
0
—
—
5.3
7.5
0
0
—
—
4.67
6.67
A
TOTAL
EACH OUTPUT
TOTAL
2
OUTPUT POWER
0
0
—
56
80
0
0
—
—
63
90
0
0
—
70
W
VIN = 19 TO 40 VDC
—
—
100
OUTPUT RIPPLE
+ V
—
—
25
25
150
150
—
—
50
50
175
175
—
—
50
50
225
225
OUT
mV p-p
mV
10 KHZ - 2 MHZ
+ V
- V
OUT
LINE REGULATION
—
—
0
50
—
—
0
50
—
—
0
50
OUT
V
= 19 TO 40 VDC
IN
25
100
25
100
25
100
- V
OUT
LOAD REGULATION
NO LOAD TO FULL
+ V
- V
—
—
0
50
—
—
10
50
100
200
—
—
10
50
100
200
OUT
mV
25
100
OUT
SEE NOTE 3
SEE NOTE 4
CONTINUOUS
1, 5
CROSS REGULATION
TC = 25°C
—
—
6
8
8
—
—
2
4
4
—
—
2
4
4
%
7
28
—
2
28
—
2
28
—
INPUT VOLTAGE
NO LOAD TO FULL
19
0
40 19
40 19
40
50
VDC
V
50
0
50
0
TRANSIENT
50 ms
INPUT CURRENT
TC = 25°C
NO LOAD
—
—
—
50
9
120
14
—
—
—
50
9
120
14
—
—
—
50
9
120
14
INHIBITED - INH1
INHIBITED - INH2
10 KHZ - 10 MHZ
mA
35
80
35
80
35
80
INPUT RIPPLE
CURRENT
—
30
80
80
—
—
30
86
80
—
—
30
87
80
—
mA p-p
%
EFFICIENCY
TC = 25°C
BALANCED LOAD
75
81
82
LOAD FAULT
TC = 25°C
POWER DISSIPATION
SHORT CIRCUIT
—
—
15
20
—
—
15
20
—
—
15
20
W
1.5
4.0
1.5
4.0
1.5
4.0
ms
1, 6
RECOVERY
STEP LOAD
RESPONSE
50% - 100% - 50% TRANSIENT
—
—
350
1.5
450
3.0
—
—
450
1.5
700
3.0
—
—
450
1.5
700
3.0
mV pk
1, 6
RECOVERY
ms
± V
OUT
1, 7
STEP LINE
RESPONSE
19 - 40 -19 VDC TRANSIENT
—
—
250
200
600
300
—
—
250
200
800
600
—
—
250
200
800
600
mV pk
1
1, 6
RECOVERY
± V
μs
ms
OUT
START-UP
DELAY
—
—
3.5
0
20
25
—
—
3.5
0
20
50
—
—
3.5
0
20
50
1
mV pk
OVERSHOOT
Notes
1. Guaranteed by design, not tested.
5. Unit will shut down above approximately 45V but will be undamaged and will
restart when voltage drops into normal range.
6. Recovery time is measured from application of the transient to point at which
Vout is within 1% of final value.
2. Up to 70% of the total output power (current) is available from either output
provided the opposite output is carrying 30% of the power (current) in use.
3. Effect on negative Vout from 50%/50% loads to 30%/70% or 70%/30% loads.
4. Effect on negative Vout from 50%/50% loads to 10% then 50% load on
negative Vout
7. Transition time >10 μs.
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