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.

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.

Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

TRIPLE OUTPUT MODEL – SMRT28515T

5

±15

UNITS

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

OUTPUT VOLTAGE

4.92

5.00

5.08

—

—

—

14.77

15.00

15.23

-14.70

-15.00

-15.30

VDC

—

—

3.0

0

±0.5

±0.75

A

0

—

1 5

0

±7.5

15

W

OUTPUT RIPPLE

—

—

200

—

—

200

mV p-p

LINE REGULATION

—

5

25

—

—

—

—

—

25

—

20

35

mV

LOAD REGULATION

NO LOAD TO FULL

—

5

50

—

—

—

—

5

50

—

10

500

mV

TOTAL REGULATION

ALL CONDITIONS OF

LINE, LOAD, AGING,

TEMP AND RADIATION

4.7

—

5.3

±14

—

±16.0

V

OUT

CONTINUOUS

19

28

56

0

—

80

19

28

56

0

—

80

VDC

V

TRANSIENT 100 ms

INPUT CURRENT

—

—

50

—

—

110

—

—

50

—

—

110

V

mA

NO LOAD

10 kHz - 20 MHz

—

10

150

—

10

150

mA p-p

70

—

—

70

—

—

%

LOAD FAULT

—

—

25

—

—

25

W

TRANSIENT

-250

—

250

—

—

1

-350

—

350

—

—

1

mV pk

ms

RECOVERY

TRANSIENT

-500

—

500

—

—

1.5

-750

—

750

—

—

1.5

mV pk

ms

RECOVERY

START-UP

NO LOAD AND FULL

—

—

25

—

0

200

—

—

20

—

0

350

ms

mV pk

UNCONDITIONALLY

STABLE, START-UP

DELAY INCREASED

TC = 25°C

—

—

5000

—

—

1000

μF

Crane Aerospace & Electronics Power Solutions

www.craneae.com

Page 13 of 17

Rev B – 20080213

SMRT Single, Dual and Triple DC/DC Converters

28 VOLT INPUT – 35 WATT