Crane Aerospace & Electronics Power Solutions
SꢀTR Single, Dual and Triple DC-DC Converters
28 Volt input – 30 Watt
table 9: electrical characteriSticS:-55°cto +125°c caSe,28vDcvin,100%loaD,Free run,rha“o”,unleSS otherWiSe SpeciFieD.
TRIPLE OUTPUT MODEL – SMTR28512T
5 (MAIN)
TYP
5.00
—
±12 (AUXILIARIES)
UNITS
VDC
A
PARAMETER
CONDITIONS
MIN
4.85
0.3
MAX
5.15
4.0
MIN
TYP
MAX
OUTPUT VOLTAGE
OUTPUT CURRENT
±11.58 12.00 ±12.42
2
1
0
±0.416 0.625
V
= 16 to 40 VDC
MAX. TOTAL AUX
MAX. TOTAL AUX
—
—
—
—
—
0.834
in
2
1
OUTPUT POWER
= 16 to 40 VDC
0
—
—
20
—
0
±5
—
7.5
W
V
—
—
10
in
OUTPUT RIPPLE
10 kHz - 2 MHz
T
T
= 25°C
—
—
—
—
16
—
—
—
—
—
10
30
28
—
40
4
125
180
20
—
—
—
—
—
—
—
—
—
—
25
30
—
—
—
—
120
120
75
75
—
C
mV p-p
= -55°C TO +125°C
C
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
V = 16 to 40 VDC
mV
mV
VDC
V
in
3, 4
50
CONTINUOUS
TRANSIENT 50 ms
NO LOAD
40
1
50
—
INPUT CURRENT
110
8
—
mA
INHIBITED
—
INPUT RIPPLE CURRENT
EFFICIENCY
10 kHz - 10 MHz
—
72
70
—
—
—
—
—
—
—
—
45
73
80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
mA p-p
%
T
T
= 25°C
C
C
= -55°C TO +125°C
—
—
—
5
LOAD FAULT
POWER DISSIPATION
—
14
—
W
ms
1
ALL OUTPUTS SHORTED
STEP LOAD RESPONSE
RECOVERY
—
6.0
±400
0.30
±800
5
—
6.0
±1500
6
6
TRANSIENT
±150
0.05
—
±500
3
mV pk
ms
7
RECOVERY
1
STEP LINE RESPONSE
TRANSIENT
—
±800
5
mV pk
ms
7
16 - 40 - 16 V
RECOVERY
—
—
IN
8
START-UP
DELAY
—
6.0
500
—
6.0
ms
1
OVERSHOOT
—
—
2000
mV pk
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
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.
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.
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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SMTR Rev AA - 2013.04.18
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