MSM2815S资料

FEATURES

•••••

–55°C to +125°C operation16 to 40 VDC inputSurface mountable

Will withstand solder reflow

Transient protection up to 80V/120 ms,meets MIL-STD-704Arequirements•Inhibit function•Fully isolated

•Ultra-wide bandwidth magnetic feedback•Up to 82% efficiency

• Indefinite short circuit protection

•Undervoltage shutdown below 10 Vin

DC/DC CONVERTERS28 VOLTINPUTMSM SERIES5 WATTMODELS

VDC OUTPUTSINGLES3.351215

DUALS±12±15

Size (max.):Weight:2.01 x 2.01 x 0.312 inches (51.1 x 51.1 x 7.9 mm)20 grams maximum

DESCRIPTION

The MSM Series™of DC/DC converters delivers up to 5 watts in asurface mountable package. The use of commercially availablediscrete components, printed wiring board construction, and surfacemount technology keep costs low. Mature design technology andsevere derating maintain high-reliability, providing full power opera-tion over the full military temperature range of –55 to +125°C. Output voltages of 3.3, 5, 5.2, 12, 15, ±12, or ±15 operate from aninput range of 16 to 40 VDC. Operation below 16 volts is possible atreduced power while still maintaining output regulation. Theconverters are rated for input transients up to 80 V for up to 120milliseconds which meets the requirements for MIL-STD-704A.

The converter is inhibited when the TTLcompatible low (≤0.8 V) isapplied to the inhibit pin. The unit is enabled when the pin, which isinternally connected to a pull-up resistor, is left unconnected or isconnected to an open collector gate. The open circuit output voltageassociated with the inhibit pin is 9 to 11 V. In the inhibit mode, amaximum of 0.5 mAmust be sunk from the inhibit pin.

PROTECTIONFEATURES

Undervoltage lockout prevents the MSM Series converters fromoperating below approximately 10 VDC input. This circuitry canprevent system shutdown problems in starting “constant power”devices at low input voltages. All models include a soft-start functionto prevent large current draw and minimize overshoot under all loadand line conditions. The MSM Series of converters also provideshort circuit and overload protection. Short circuit internal dissipationis lower than the internal dissipation which occurs during full loadconditions.

CONVERTERDESIGN

The converters incorporate a flyback topology with a constantfrequency to minimize EMI and noise. The pulse-width-modulator isconstructed of discrete devices to allow to the use of mature tech-nologies and assure operation over the full temperature range. Aproprietary magnetic isolator, designed with feed-forward and loadcorrection, provides nearly instantaneous output control for goodoutput regulation.

SURFACEMOUNTABLEPACKAGING

The MSM Series of DC/DC converters can be surface mounted orhand-soldered. Maximum reflow temperature for surface mountingthe MSM converter is 230°C for a maximum of 30 seconds. SN60,62, or 63 are the recommended types of solder. Hand solderingshould not exceed 300°C for 10 seconds per pin.

INHIBITFUNCTION

MSM Series converters provide a TTLopen collector-compatibleinhibit feature that can be used to disable internal switching andinhibit the unit’s output. nhibiting in this manner results in lowstandby current, and no generation of switching noise.

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MSM SERIES5 WATTABSOLUTE MAXIMUM RATINGS

Input Voltage•16 to 40 VDCOutput Power •5W

Power Dissipation•1.9 W

Lead Soldering Temperature (10 sec per lead)•300°C

Storage Temperature Range (Base plate)•–55°C to +130°C

DC/DC CONVERTERSINHIBIT

Inhibit – TTL Open Collector •Logic low (output disabled) •Inhibit pin current 0.34 mAtyp•Referenced to input common

•Logic high (output enabled) open collector

TYPICAL CHARACTERISTICS

Output Voltage Temperature Coefficient•200 ppm/°C typical

Temperature Rise (Still Air)

•18°C / watt dissipated, typicalInput to Output Capacitance•100 pF typical

Undervoltage Lockout•10 V input typicalCurrent Limit

•160% of full load typicalIsolation

•100 megohm minimum at 500 VConversion Frequency (kHz)

•25°C, 200 min, 300 typ, 400 max Inhibit Pin Voltage (unit enabled)•10 V, typical

RECOMMENDED OPERATING CONDITIONS

Input Voltage Range

•16 to 40 VDC continuous•80 V for 120 msec transientCase Operating Temperature (Tc)•–55°C to +125°C full power•–55°C to +130°C absolute

Derating Output Power/Current (Tc)

•Linearly from 100% at 125°C to 0% at 130°C

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

SINGLE OUTPUT MODELS

ARAMETERCONDITIONSOUTPUTVOLTAGETc= 25°COUTPUTCURRENTVIN= 16 TO 40 VDCOUTPUTPOWEROUTPUTRIPPLEVOLTAGE

LINE REGULATIONLOAD REGULATIONINPUTVOLTAGENO LOAD TO FULLINPUTCURRENT

VIN= 16 TO 40 VDC10 kHz - 2 MHzTc= –55°C TO +125°CVIN= 16 TO 40 VDCNO LOAD TO FULLCONTINUOUSTRANSIENT120 ms

NO LOADFULLLOADINHIBITED10k Hz - 10 MHzTc= –55°C TO +125°C

Tc= 25°C

POWER DISSIPATION

OVERLOADSHORTCIRCUIT1RECOVERY2OUTPUTCURRENT

TRIPPOINTSHORTCIRCUIT50 %–100%– 50%TRANSIENT3RECOVERY216 TO 40 TO 16 V

IN

TRANSIENT3RECOVERY2DELAYOVERSHOOT

MSM283R3SMSM2805SMSM2812SMSM2815SMIN TY MAXMINTYMAXMINTYMAXMINTYMAX3.253.33.354.9355.0811.821212.1814.781515.23—1.52——1.0——0.42——0.33—0————160—————————————————

—25018006015028—282424.530180741.9192.22.33500.84001.54250

5————4080—————————————————

0————160—————————————————

—20015008025028—252354.525150761.80.98.51.51.63500.84001.54300

5————4080—————————————————

0————160—————————————————

—180120012035028—202304.520120781.70.880.70.84001.05002.04350

5————4080—————————————————

0————160—————————————————

—150100015040028—162234.515100801.50.77.50.560.001.05002.04400

5————4080—————————————————

UNITSVDCAWmV p-pmVmVVDCVmA

INPUTRIPPLECURRENTEFFICIENCYLOAD FAULT

mAp-p%

Wms

AmV pkmsmV pkmsmsmV pk

STEPLOAD RESPONSESTEPLINE RESPONSE START-UP0 TO 28 VIN

Notes:

1.Short circuit is measured with a 50 mohm resistive load.2.Time to settle within 1% of VOUT3.Transition ≥10 µs.

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DC/DC CONVERTERSDUAL OUTPUT MODELS

PARAMETEROUTPUTVOLTAGEOUTPUTCURRENTOUTPUTPOWER1OUTPUTRIPPLEVOLTAGE +VOUT

–VOUT

LINE REGULATIONVIN= 16 TO 40 VDCLOAD REGULATIONNO LOAD TO FULLINPUTVOLTAGENO LOAD TO FULLINPUTCURRENT

CONDITIONSTc= 25°C

VIN= 16 TO 40 VDCVIN= 16 TO 40 VDC10 kHz - 2 MHzTc= –55°C TO +125°C10 kHz - 2 MHzTc= –55°C TO +125°C

+VOUT

–VOUT+VOUT–VOUT

CONTINUOUSTRANSIENT120 ms

NO LOADFULLLOADINHIBITED10 kHz - 2 MHzTc= –55°C TO +125°CPOWER DISSIPATION

OVERLOADSHORTCIRCUIT

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MSM SERIES5 WATTUNITSVDCmAW

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

MSM2812DMINTYPMAX±11.82±12±12.18 0±208—0————————160————————

—1801200180120012012035035028—202304.520120801.70.88.0350380400150024350

5————————4080—————————————————

MSM2815DMINTYPMAX±14.78±15±15.23 0±167—0————————160—————————————————

—1501000150100015015040040028—162204.515100821.50.77.5280300400150023.5400

5————————4080—————————————————

VDCV

mV p-p

mV

mV

mAmAp-p%

INPUTRIPPLECURRENTEFFICIENCYLOAD FAULT

WmsmA

RECOVERY3—OUTPUTCURRENT

TRIPPOINT—SHORTCIRCUIT—

STEPLOAD 50 %–100%– 50% RESPONSE±VOUTTRANSIENT4—STEPLINE RESPONSE ±VOUTSTART–UP±VOUT

RECOVERY16 TO 40 TO 16 VIN

TRANSIENT4

RECOVERYDELAYOVERSHOOT

33

mV pkmsmV pkmsmsmV pk

—————

Notes:

1.The maximum specification indicates the converter’s total output power, Upto 75% of the total is available from either output providing the other outputmaintains a minimum of 25% of the total power.

2.Short circuit is measured with a 50 mohm resistive load.

3.Time to settle within 1% of V4.Transition ≥10 µs.

OUT

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MSM SERIES5 WATTDC/DC CONVERTERSPIN OUTPin123456710Single OutputInput CommonInput CommonPositive InputNo connectionInhibitNo connectionOutput CommonPositive OutputOutput CommonNo connectionDual OutputInput CommonInput CommonPositive InputNo connectionInhibitNo connectionOutput CommonPositive OutputOutput CommonNegative Output1234Top ViewComponent Side1098765FIGURE1:PINOUTMODEL NUMBERING KEYBase ModelInput VoltageOutput VoltageNumber of Outputs (S = single, D = dual)MSM 28 12 D4

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DC/DC CONVERTERS2.00 (50.8)0.000.250.652.00 (50.8)0.951.25MSM SERIES5 WATT1.650.02 (0.51)0.312 max. (7.92)Case dimensions in inches (mm)Tolerance±0.005 (0.13) for three decimal places, ±0.01 (0.3) for two decimal places unless otherwise specified. Pinspacing tolerance is ±0.010CAUTIONMaximum reflow temperature for surface mounting the MSM converter is 230°C for a maximum of 30 seconds. SN60,62, or 63 are the recommended types of solder. Hand soldering should not exceed 300°C for 10 seconds per pin.Note: Although every effort has been made to render the case drawings at actual size, variations in the printing processmay cause some distortion. Please refer to the numerical dimensions for accuracy.FIGURE2:MSM SERIESOUTLINEDRAWINGContact Information:Interpoint Headquarters USAPhone:1-800-822-8782

+425-882-3100

Email:power@intp.com

www.interpoint.comInterpoint UK

Phone:+44-1252-815511Email:poweruk@intp.com

Interpoint France

Phone:+33-134285455Email:powerfr@intp.com

27922 DTS Rev B This revision supercedes all previous releases.

All technical information is believed to be accurate, but no responsibility isassumed for errors or omissions. nterpoint reserves the right to makechanges in products or specifications without notice. MSM Series is a trade-mark of Interpoint. Copyright ©2000-2001 Interpoint. All rights reserved.

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YOURNOTESONINTERPOINT’SNEWPRODUCTS6