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
5
TYP
5.00
—
±15
TYP
UNITS
VDC
PARAMETER
CONDITIONS
MIN
4.92
—
MAX MIN
MAX
OUTPUT VOLTAGE
+ VOUT
- VOUT
5.08 14.77
15.00
15.23
—
3.0
15
-14.70 -15.00 -15.30
5, 10
OUTPUT CURRENT
—
—
0
±0.5
±7.5
±0.75
15
A
10
OUTPUT POWER
VIN = 19 TO 56 VDC
10 KHZ - 20 MHZ
0
—
0
W
OUTPUT RIPPLE
—
—
200
—
—
200
mV p-p
mV
LINE REGULATION
+ V
—
—
5
25
—
—
—
—
25
35
OUT
- V
—
20
OUT
V
= 19 TO 50 VDC
IN
LOAD REGULATION
NO LOAD TO FULL
+ V
OUT
—
5
50
—
—
—
5
50
500
mV
- V
V
= 19, 28, 50 VDC
—
—
—
10
OUT
IN
TOTAL REGULATION
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
4.7
5.3 ±14
56 19
—
±16.0
VOUT
7, 8
INPUT VOLTAGE
CONTINUOUS
19
0
28
—
—
—
10
—
—
—
—
—
28
56
80
VDC
V
TRANSIENT 100 ms
80
50
0
—
—
—
10
—
—
—
—
—
7
INPUT CURRENT
INHIBITED
—
—
—
—
70
—
50
V
mA
NO LOAD
—
110
150
—
110
150
—
9
INPUT RIPPLE CURRENT
10 kHz - 20 MHz
—
mA p-p
%
4
EFFICIENCY
70
—
2
LOAD FAULT
POWER DISSIPATION
25
25
W
6
STEP LOAD RESPONSE
TRANSIENT
RECOVERY
-250
—
250 -350
350
1
mV pk
ms
1
—
1
STEP LINE RESPONSE
19 - 56 - 19 V
IN
-500
500 -750
750
mV pk
TRANSIENT
RECOVERY
—
—
1.5
—
—
1.5
ms
3
START-UP
DELAY
NO LOAD AND FULL
—
—
—
0
25
—
—
—
0
20
ms
3
OVERSHOOT
200
350
mV pk
1
CAPACITIVE LOAD
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
5000
—
—
1000
ꢀF
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 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.
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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Rev B – 20080213
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