Crane Aerospace & Electronics Power Solutions
sMFL single and dual dc/dc converters
28 VoLt input – 65 Watt
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, RHA level O, unless otherwise specified.
DUAL OUTPUT MODELS
Parameter
OutPut VOltage
OutPut current
2
OutPut POwer
OutPut riPPle
± V
Out
cOnDitiOnS
tc = 25°c
V
in
= 16
tO
40 VDc
+ V
Out
each OutPut
tOtal OutPut
V
in
= 16
tO
40 VDc
10
k
h
z
- 2 mh
z
V
IN
= 16
tO
40 VDc
nO lOaD tO Full
+ V
Out
+ V
Out
- V
Out
crOSS regulatiOn
tc = 25°c
inPut VOltage
See nOte
3
See nOte
4
SMFL2805D
MIN
4.95
4.92
0
0
0
—
—
—
—
—
—
—
16
—
—
—
—
—
75
—
—
—
—
—
—
—
- V
Out
TYP
5.00
5.00
—
—
—
50
0
0
25
5
3
28
—
50
9
35
30
78
12.5
1.5
250
1.5
250
200
3.5
MAx
5.05
5.08
7
10
50
100
50
50
100
8
6
50
120
SMFL2812D
MIN
TYP
MAx
11.88 12.00 12.12
11.82 12.00 12.18
0
0
0
—
—
—
—
—
—
—
—
—
—
—
—
50
0
3.5
5
60
120
50
SMFL2815D
MIN
TYP
MAx
14.85 15.00 15.15
14.77 15.00 15.23
0
0
0
—
—
—
—
—
—
—
—
—
—
—
50
0
3.03
4.33
65
150
50
unitS
VDc
a
w
mV p-p
mV
mV
%
VDc
V
mA
mA p-p
%
w
ms
mV pk
mS
line regulatiOn
lOaD regulatiOn
- V
Out
25
100
25
10
50
2
2
28
—
50
9
35
30
84
10
1.5
450
1.5
250
200
3.5
100
120
4
4
50
100
25
10
150
2
2
28
—
50
9
35
30
85
10
1.5
500
1.5
250
200
3.5
100
50
150
4
4
40
50
100
14
70
80
—
14
4.0
600
3.0
400
300
6
50 —
cOntinuOuS
TRANSIENT
1,
5
50 ms
40 16
40 16
inPut current
nO lOaD
inhibiteD–inh1
inhibiteD–inh2
14 —
70 —
50 —
— 81
16 —
14 —
70 —
50 —
— 82
14 —
inPut riPPle current
eFFiciency
tc = 25°c
lOaD Fault
tc = 25°c
SteP lOaD reSPOnSe
± V
Out
± V
Out
SteP line reSPOnSe
1,
6
Start-uP
8
10
k
h
z
- 10 mh
z
balanceD lOaD
ShOrt circuit
POwer DiSSiPatiOn
recOVery
1
50% - 100% - 50% tranSient
16 - 40 -16 VDc tranSient
7
recOVery
Delay
recOVery
1,
7
4.0
350
3.0
300
300
6
—
—
—
—
—
—
4.0
600
3.0
400
300
6
—
—
—
—
—
—
mV pk
µs
ms
Notes
1. Guaranteed by design, not tested.
2. Up to 70% of the total output power is available from either output providing the
opposite output is simultaneously carrying 30% of the total power.
3. Effect on negative Vout from 50%/50% loads to 70%/30% or
30%/70% loads.
4. Effect on negative Vout from 50%/50% loads to 50% then 10% load on negative
Vout.
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.
7. Transition time > 10 µS.
8. Tested on release from inhibit.
9. Shall not compromise DC performance.
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