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.
TRIPLE OUTPUT MODEL – SMRT28515T
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
5, 10
OUTPUT POWER
10
OUTPUT RIPPLE
LINE REGULATION
V
IN
= 19 TO 50 VDC
LOAD REGULATION
NO LOAD TO FULL
V
IN
= 19, 28, 50 VDC
TOTAL REGULATION
V
IN
= 19
TO
56 VDC
10
K
H
Z
- 20 MH
Z
+ V
OUT
- V
OUT
+ V
OUT
- V
OUT
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
CONTINUOUS
TRANSIENT 100 ms
INPUT CURRENT
INPUT RIPPLE CURRENT
9
EFFICIENCY
4
LOAD FAULT
STEP LOAD RESPONSE
6
STEP LINE RESPONSE
1
POWER DISSIPATION
2
TRANSIENT
RECOVERY
19 - 56 - 19 V
IN
TRANSIENT
RECOVERY
START-UP
DELAY
3
NO LOAD AND FULL
OVERSHOOT
3
CAPACITIVE LOAD
1
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
INHIBITED
7
NO LOAD
10 kHz - 20 MHz
CONDITIONS
+ V
OUT
- V
OUT
MIN
4.92
—
—
0
—
—
—
—
—
4.7
19
0
—
—
—
70
—
-250
—
-500
—
—
—
—
5
TYP
5.00
—
—
—
—
5
—
5
—
—
28
—
—
—
10
—
—
—
—
—
—
—
0
—
MAX MIN
5.08
14.77
±15
TYP
15.00
-15.00
±0.5
±7.5
—
—
20
5
10
—
28
—
—
—
10
—
—
—
—
—
—
—
0
—
MAX
15.23
-15.30
±0.75
15
200
mV p-p
25
—
25
35
50
mV
— —
5.3 ±14
56
80
19
0
500
±16.0
56
80
50
110
150
—
25
350
1
750
1.5
20
350
1000
V
OUT
VDC
V
V
mA
mA p-p
%
W
mV pk
ms
mV pk
ms
ms
mV pk
μF
mV
VDC
A
W
UNITS
— -14.70
3.0 0
15 0
200 —
— —
50
—
INPUT VOLTAGE
7, 8
50 —
110 —
150 —
— 70
25 —
250
-350
1 —
500
-750
1.5 —
25
200
—
—
5000 —
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when all outputs are shorted simultaneously.
3. Measured from release of inhibit or input voltage step.
4. Efficiency measured with all outputs at full load.
5. Up to 750 mA is available from either auxiliary output provided the total auxiliary output power does not exceed 15 watts.
6. Half load to/from full load; Transition time
≥
10
μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x10
4
rads (Si) total dose.
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.
10. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation
over full input voltage range.
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