MHF+ Single, Dual and Triple DC/DC Converters

Crane Aerospace & Electronics Power Solutions

Page 9 of 20

Rev K - 20060613

www.craneae.com

28 VOLT INPUT – 15 WATT

SINGLE OUTPUT MODELS

MHF+2812S

MHF+2815S

MHF+2828S

PARAMETER

CONDITION

MIN

TYP MAX

MIN

TYP MAX

MIN

TYP MAX

UNITS

OUTPUT VOLTAGE

11.88 12.00 12.12

14.85 15.00 15.15

27.72 28.00 28.28

VDC

OUTPUT CURRENT

0

—

1.25

0

—

1.00

0

—

0.54

A

OUTPUT POWER

0

—

15

0

—

15

0

—

15

W

OUTPUT RIPPLE

10 kHz - 2 MHz

—

30

80

—

30

80

—

60

120

mV p-p

VOLTAGE

Tc = –55°C to +125°C

—

50

120

—

50

120

—

100

180

LINE REGULATION

Vin = 16 to 40 VDC

—

5

50

—

5

50

—

50

150

mV

LOAD REGULATION

NO LOAD TO FULL

—

20

50

—

20

50

—

50

150

mV

INPUT VOLTAGE

CONTINUOUS

16

28

40

16

28

40

16

28

40

VDC

NO LOAD TO FULL

TRANSIENT 50 ms

—

—

50

—

—

50

—

—

50

V

INPUT CURRENT

NO LOAD

—

25

50

—

25

62

—

25

60

FULL LOAD

—

680

752

—

670

752

—

640

760

mA

INHIBITED

—

5

12

—

5

12

—

5

12

INPUT RIPPLE

10 kHz - 10 MHz

—

35

80

—

35

80

—

35

80

CURRENT

Tc = –55°C to +125°C

—

—

120

—

—

120

—

—

120

mA pp

EFFICIENCY

78

79

—

78

80

—

82

84

—

%

SHORT CIRCUIT

POWER DISSIPATION

—

3.5

6

—

3.5

6

—

3.5

6

W

—

7.5

30

—

7.5

30

—

7.5

30

ms

STEP LOAD RESP.

50% – 100% – 50%

TRANSIENT

–500

150

500

–600

200

600

–800

600

800

mV pk

—

150

300

—

150

300

—

200

400

μs

STEP LINE RESP.

16 – 40 – 40 VDC

–800

550

800

–800

550

800

–1200 1100 1200

mV pk

—

0.8

1.2

—

0.8

1.2

—

0.8

1.2

ms

START-UP

DELAY

0

10

25

0

10

25

0

10

25

ms

0

200

1200

0

200

1500

0

200

280

mV pk

Notes

1. Indefinite short circuit protection not guaranteed above 125°C

(case)

2. Recovery time is measured from application of the transient to point

at which Vout is within regulation.

3. Input step transition time >10 μs.

4. Input step transition time <100 μs.

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.