Crane Aerospace & Electronics Power Solutions
sMsa single and dual dc/dc converters
28 Volt input – 5 Watt - pending reVision F release
electrical Characteristics: 25°C Tc, 28 VdC Vin, 100% load, radiation level o, unless otherwise specified.
single ouTPuT models
parameter
Output VOltage
Output Current
Output pOWer
Output ripple
line regulatiOn
lOaD regulatiOn
input VOltage
COnDitiOnS
tC = -55°C
tO
+125°C
tC = -55°C
tO
+125°C
V
in
= 16
tO
40 VDC
tC = -55°C
tO
+125°C
V
in
= 16
tO
40 VDC
10
k
h
z
- 2 mh
z
V
in
= 16
tO
40 VDC
tC = -55°C
tO
+125°C
nO lOaD tO Full
tC = -55°C
tO
+125°C
COntinuOuS
nO lOaD tO Full
tC = -55°C
tO
+125°C
TRansienT
1
50 ms
nO lOaD
Full lOaD
inhibiteD
input ripple
Current
2
lOaD Fault
1, 2
eFFiCienCy
10
k
h
z
- 10 mh
z
tC = -55°C
tO
+125°C
ShOrt CirCuit
pOWer DiSSipatiOn
reCOVery
Step lOaD
reSpOnSe
Step line
reSpOnSe
1, 3
50% - 100% - 50%
tranSient
reCOVery
1, 3
tranSient
16 - 40 VDC
40 - 16 VDC
reCOVery
16 - 40 VDC
40 - 16 VDC
OVerShOOt
1
Delay
0
—
—
—
—
16
smsa283R3s
min typ maX
3.25
3.30
—
—
300
10
10
28
1200
4
600
0
smsa2805s
min typ maX
5.00
—
—
150
10
10
28
1000
5
450
smsa285R2s
min typ maX
5.20
—
—
150
10
10
28
5.25
462
5
450
50
50
40
0
—
—
unitS
VdC
ma
W
mV p-p
mV
mV
VdC
3.35 4.95
5.05 5.15
—
—
50 —
50 —
40 16
50 —
50 —
40 16
0
—
—
—
—
—
60
—
—
—
—
—
—
—
—
—
—
35
250
3
50
60
—
1.5
12.5
200
200
200
200
400
400
10
50
—
5
200
300
—
2.4
500
500
500
500
0
—
—
—
—
68
—
—
—
—
—
—
35
250
3
50
60
74
1.5
12.5
200
200
200
200
400
400
10
50
—
5
200
300
0
—
—
—
—
—
35
250
3
50
60
74
1.5
12.5
200
200
200
200
400
400
10
50
60
—
5
200
300
—
2.0
25
500
500
500
500
1000
1000
75
V
ma
input Current
60 —
60 —
ma p-p
%
W
ms
mV pk
µs
mV pk
µs
ms
— 68
2.0
500
500
500
500
—
—
—
—
—
25 —
25 —
Start-up
3
—
1000
1000 —
75 —
1000 —
1000 —
75 —
notes
1. guaranteed by design, not tested.
2. indefinite short circuit protection not guaranteed above 125°C
(case).
3. Recovery time is measured from application of the transient to
point at which V
ouT
is within 1% of V
ouT
at final value.
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Page 6 of 14
Rev F - 20090318 - Pending Revision F Release
CRANE [ Crane Aerospace & Electronics. ]
