Crane Aerospace & Electronics Power Solutions
SMTR Single, Dual and Triple DC/DC Converters
28 VOlT INPuT – 30 WaTT – PENDINg REVISION F RElEaSE
Electrical Characteristics: -55 to +125° C T
C
, 28 VDC Vin, 100% load, no irraditaion, unless otherwise specified.
TRIPLE OUTPUT MODEL – SMRT28512T
parameter
Output VOltage
Output Current
2, 3
Output pOwer
2, 3
tOtal all OutputS
Output ripple
line regulatiOn
4
lOaD regulatiOn
3, 4
input VOltage
input Current
input ripple Current
3
eFFiCienCy
lOaD Fault
5
all OutputS ShOrteD
Step lOaD reSpOnSe
6, 7
Step line reSpOnSe
1
COntinuOuS
tranSient 50
ms
1
nO lOaD
inhiBiteD
10
kHz
- 10
MHz
25°C
pOwer DiSSipatiOn
reCOVery eaCh
Output
1
tranSient
reCOVery
V
in
16
tO
40 VDC
tranSient
reCOVery
Start-up
Delay
OVerShOOt
1
10
k
h
z
- 2 mh
z
V
in
16
tO
5 (MAIn)
MIn
4.95
4.85
0.30
—
—
—
—
—
16
—
—
—
—
71
69
—
—
—
—
—
—
—
—
TYP
5.00
5.00
—
—
—
—
—
—
28
—
—
—
—
73
—
—
—
—
—
—
—
—
—
MAX
5.05
5.15
4.00
20
30
180
20
50
40
50
110
6
80
—
—
14
6
±400
0.30
±800
5
6
500
MIn
+12 (+AUX)
TYP
12.00
12.00
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MAX
12.18
12.42
±0.625
7.5
—
±120
±75
±75
—
—
—
—
—
—
—
—
—
±1500
6
±800
5
6
2000
MIn
11.82
11.58
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
11.82
11.58
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
-12 (-AUX)
TYP
12.00
12.00
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MAX
12.18
12.42
±0.625
7.5
—
±120
±75
±75
—
—
—
—
—
—
—
—
—
±1500
6
±800
5
6
2000
COnDitiOnS
25°C, +V
Out
+V
Out
unitS
VDC
A
mV p-p
mV
mV
VDC
V
mA
mA p-p
%
W
ms
mV pk
ms
mV pk
ms
ms
mV pk
40 VDC
notes:
(All temperatures in tables and notes refer to case temperature, T
C
.)
1. guaranteed by design, not tested.
2. The sum of the two Aux outputs is not to exceed 10 watts. The maximum load
per Aux output is 7.5 watts.
3. To maintain regulation when operating the ±Aux at full load, a minimum load of
300 mA is required on the main output. For Aux loads less than full load, a lower
load (<300 mA) on the main output will maintain regulation.
4. Measured on each output one at a time with the other outputs at full load.
5. Indefinite short circuit protection not guaranteed above 125°C (case).
6. Response of each output as all outputs are simultaneously transitioned.
Main: 50% - 100% - 50% of main full load
Auxiliaries: 25% - 50% - 25% each, of total auxiliary full load
7. Recovery time is measured from application of the transient to point at which
Vout is within 1% of regulation.
8. Tested on release from inhibit.
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