Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
DUAL OUTPUT MODELS
SMRT2805D
SMRT2812D
SMRT2815D
TYP MAX
UNITS
PARAMETER
CONDITIONS
VOUT A
MIN
4.90
4.90
—
TYP
5.00
5.00
—
MAX MIN
5.10 11.76
5.10 11.76
TYP
12.00
12.00
—
MAX MIN
12.24 14.70
12.24 14.70
OUTPUT VOLTAGE
OUTPUT CURRENT
15.00
15.00
—
15.30
15.30
1.17
17.5
17.5
35
VDC
A
VOUT B
2, 5
2, 5
3.0
15
0
1.46
17.5
17.5
35
—
0
OUTPUT POWER
VIN = 19 TO 56 VDC
VOUT A
VOUT B
0
—
0
—
—
0
—
15
0
—
0
—
W
TOTAL
0
—
30
0
—
0
—
OUTPUT RIPPLE
10 KHZ - 20 MHZ
VIN = 19 TO 50 VDC
VIN = 19, 28, 50 VDC
—
—
200
30
—
—
—
—
200
25
—
—
—
—
180
30
mV p-p
mV
LINE REGULATION
LOAD REGULATION
TOTAL REGULATION
—
—
5
5
—
5
40
5
50
5
40
mV
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
4.6
—
5.4 10.9
56 19
—
13.1 14.0
56 19
—
16.0
V
out
7, 8
INPUT VOLTAGE
CONTINUOUS
19
0
28
—
28
—
28
—
56
80
VDC
V
TRANSIENT 100 ms
80
50
0
80
50
0
7
INPUT CURRENT
INPUT RIPPLE
INHIBITED
—
—
—
—
—
—
—
—
—
50
mA
NO LOAD
—
110
—
100
—
110
10 kHz - 20 MHz
—
10
50
—
10
150
—
10
50
mA p-p
9
CURRENT
EFFICIENCY
LOAD FAULT
STEP LOAD
66
—
—
—
—
—
—
75
—
—
—
—
—
—
75
—
—
—
—
—
—
—
20
%
W
3
POWER DISSIPATION
—
28
20
TRANSIENT
RECOVERY
-450
—
450 -450
450 -575
575
3
mV pk
ms
6
RESPONSE
3
—
2 —
STEP LINE
RESPONSE
19 - 56 - 19 VIN
TRANSIENT
-500
500 -1000
—
1000 -700
700
mv pk
1
RECOVERY
—
—
4
—
—
3
—
—
4
ms
4
START-UP
DELAY
NO LOAD AND FULL
—
—
—
—
25
50
—
—
—
20
—
—
—
—
25
ms
4
OVERSHOOT
—
350
150
mV pk
1
CAPACITIVE LOAD
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
5000
—
—
5000
—
—
5000
ꢀF
Notes
1. Guaranteed by design, not tested.
2. The specified maximum current/power is available from each output.
3. Maximum power dissipation when both outputs are shorted simultaneously.
4. Measured from release of inhibit or input voltage step.
5. A minimum output load on all outputs of 2% of full load should be used on all outputs at TID of 100k rad(Si) or greater to ensure tight regulation over the full
input voltage range.
6. Half load to/from full load; Transition time ≥ 10 μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x10 rads (Si) total dose.
4
8. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
9. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current is much less, the limit in
the characteristic table is based on measurement resolution.
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