Crane Aerospace & Electronics Power Solutions
SMTR Single, Dꢀꢁl ꢁnd Triple DC/DC Converters
28 VOꢂT INPuT – 30 WaTT – PENDINꢃ REVISION F REꢂEaSE
Electrical Characteristics: -55 to +125° C T , 28 VDC Vin, 100% load, no irraditaion, unless otherwise specified.
C
TRIPLE OUTPUT MODEL – SMRT28512T
5 (MAIꢀ)
TYP
+12 (+AUX)
-12 (-AUX)
TYP
unitS
parameter
COnDitiOnS
MIꢀ
4.95
4.85
MAX
5.05
5.15
MIꢀ
TYP
MAX
MIꢀ
MAX
12.18
12.42
Output VOltage
25°C, +VO u t
+VO u t
5.00
11.82 12.00
11.58 12.00
12.18
12.42
11.82 12.00
11.58 12.00
5.00
VDC
A
2, 3
Output Current
0.30
—
—
—
—
—
16
—
—
—
—
71
69
—
—
—
—
—
—
—
28
—
—
—
—
73
—
—
4.00
20
30
180
20
50
40
50
110
6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
±0.625
7.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
±0.625
7.5
—
2, 3
Output pOwer
tOtal all OutputS
10 khz - 2 mhz
Output ripple
line regulatiOn
lOaD regulatiOn
input VOltage
±120
±75
±75
—
±120
±75
±75
—
mV p-p
mV
4
Vin 16 t O 40 VDC
3, 4
mV
COntinuOuS
VDC
V
1
tranSient 50 ms
—
—
input Current
nO lOaD
inhiBiteD
10 kHz - 10 MHz
25°C
—
—
mA
—
—
3
input ripple Current
eFFiCienCy
80
—
—
—
mA p-p
%
—
—
—
—
—
5
lOaD Fault
pOwer DiSSipatiOn
reCOVery eaCh
14
—
—
W
all OutputS ShOrteD
—
—
6
—
—
—
—
—
—
ms
1
Output
6, 7
Step lOaD reSpOnSe
tranSient
reCOVery
—
—
—
—
±400
0.30
—
—
—
—
±1500
6
—
—
—
—
±1500
6
mV pk
ms
1
Step line reSpOnSe
Start-up
Vin 16 t O 40 VDC
tranSient
—
—
±800
—
—
±800
—
—
±800
mV pk
reCOVery
Delay
—
—
—
—
5
6
—
—
—
—
5
6
—
—
—
—
5
6
ms
ms
1
OVerShOOt
—
—
500
—
—
2000
—
—
2000
mV pk
ꢀotes:
(All temperatures in tables and notes refer to case temperature, TC.)
1. ꢃꢀꢁrꢁnteed ꢆꢄ 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.
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
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.
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.
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).
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