MHF2805D datasheet(13/23 Pages) INTERPOINT

13 / 23 page

electrical Characteristics: -55° to +125°C tC, 28 vdC vin, 100% load, free run, unless otherwise specified.

triPle outPut Model – MHF+28512t

5 2 (Main)

±12 (auXiliarieS)

unitS

paraMeter

COnDitiOnS

Min

tyP

MaX

Min

tyP

MaX

Output VOltage

VOut

4.85 2 5.00

5.15

±11.52

±12.00

±12.48

vdC

Output Current 3

—

1.5

±0.313

0.416 1

tOtal

—

1.5

—

0.625

Output pOwer 4

—

7.5

—

±3.75

5 1

Vin = 16 - 48 VDC

tOtal

—

7.5

—

7.5

Output ripple

10 kHz - 2 MHz

—

±30

±180

mv p-p

line regulatiOn

Vin= 16 tO 48 VDC

—

±120

±240

lOaD regulatiOn 6

no load to Full

—

±120

±240

CrOSS regulatiOn 6

tC = 25°C

eFFeCt On negatiVe

auXiliary

—

6.25

input VOltage

COntinuOuS

—

vdC

tranSient 1 120 ms

—

input Current

nO lOaD

—

inHiBiteD

—

input ripple Current

10 kHz - 20 MHz

—

ma p-p

eFFiCienCy

—

lOaD Fault 7, 9

POWER DiSSiPATiOn

SHort CirCuit

—

±12

reCOVery 1

—

Step lOaD reSpOnSe 8, 9

tranSient

—

±850

—

±950

mv pk

reCOVery

—

Step line

reSpOnSe 1, 9, 10

16 - 48 - 16

tranSient

—

±800

—

±800

mv pk

reCOVery

—

Start-up

Delay

nO lOaD anD Full

—

±25

OVerSHOOt 1

—

500

—

±500

mv pk

notes

1. guaranteed by design, not tested.

2. if running with external sync, at temperature extremes vout main may be

a minimum of 4.80 vdC to a maximum of 5.20 vdC.

3. the sum of the 12 volt auxiliary output currents may not exceed 625 ma.

4. the sum of the auxiliary output power may not exceed 7.5 watts. up to 5

watts (approximately 66%) of the total auxiliary output power is available

from either output providing the opposite output is simultaneously carrying

2.5 watts (approximately 33%) of the total auxiliary power.

5. load regulation for the +5 is specified at 0.0 to 1.5 a with the auxiliaries

both held at 3.75 W (313 mA). load regulation for the auxiliaries is speci-

fied as both auxiliaries from 0.0 to 3.75 W (313 mA) at the same time with

the +5 held at 1.5 a.

6. Cross regulation only occurs between the two auxiliaries and is measured

on –aux. +5 is held constant at 1.0 a. Cross regulation is specified for two

conditions:

negative aux.= 3.76 W; positive aux.= 0.37 W to 3.76 W.

negative aux. = 0.37 W to 3.76 W; positive aux. = 3.76 W.

7. load fault = < 0.100 Ω.

8. Step transition time > 10 µs.

9. time to settle to within 1% of vout final value.

10. Step transition time between 2 and 10 µs.

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Page 13 of 23

Crane aerospace & electronics Power solutions

MHF+ Single, dual and triple dC/dC Converters

28 VOlT inPuT – 15 WATT

MHF+ rev l - 20091113

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