MHV2805D CRANE [Crane Aerospace & Electronics.], MHV2805D Datasheet

MHV2805D

Manufacturer Part Number

MHV2805D

Description

MHV Single, Dual and Triple DC/DC Converters

Manufacturer

CRANE [Crane Aerospace & Electronics.]

Datasheet

1.MHV2805D.pdf (14 pages)

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• –55° to +125°C operation

• 16 to 50 VDC input

• Fully Isolated

• Optocoupler feedback

• Fixed switching frequency

• Topology –

• 80 V / 120 ms transient protection

• Inhibit and sync functions

• Trim on single output models

• Up to 81% efficiency

• Low output noise

DESCRIPTION

Interpoint’s MHV Series™ of DC/DC converters offers a wide input

voltage range of 16 to 50 VDC and a choice of nine different output

voltage configurations comprised of single, dual or triple outputs.

The converters will withstand transients of up to 80 V for up to 120

milliseconds while maintaining output voltages (with the exception of

the 12 volt single and dual outputs which will withstand transients up

to 75 volts and the 15 volt single and dual outputs which will with-

stand up to 60 volts). The MHV Series operates at a full 15 watts of

output power (10 watts for the 3.3 volt single output) over the mili-

tary temperature range of –55°C to +125°C while maintaining low

input and output noise.

MHV Series DC/DC converters are switching regulators that use

continuous flyback conversion topology with a clock frequency of

approximately 600 kHz. MHV Series converters incorporate two

internal converters with one converter phase shifted 180° from the

other to create a dual phase/phase-shifted operation. Each of the

internal converters operates at approximately one-half of the clock

frequency. This proprietary technology eliminates cross regulation,

minimizes input ripple, greatly reduces output ripple and improves

efficiency. On the triple output models, this design provides

completely independent regulation with no cross regulation effect

between the main and auxiliary outputs and no minimum loading

required on the main output.

Open collector TTL levels control the inhibit circuit. The converter is

enabled when the inhibit terminal is left unconnected or when the

inhibit terminal is connected to a voltage between 11.5 and 50 V.

Crane Aerospace & Electronics

Electronics Group (Interpoint Brand)

PO Box 97005 • Redmond WA 98073-9705

425.882.3100 • electronics@craneae.com

www.craneae.com

NHIBIT

EATURES

ONVERTER

600 kHz typical,

Dual Single Ended Flybacks

(12 Vout single and dual to 75 V,

15 Vout single and dual to 60V)

UNCTION

MHV Single, Dual and Triple DC/DC Converters

ESIGN

28 VOLT INPUT – 15 WATT

Rev D - 20060710

Page 1 of 14

When a low (0.8 V) is applied to the inhibit terminal the converter

shuts down, typically drawing 8.4 mA of input current. Inhibit

terminal resistance is 3.3 k ohms and draws 8.4 mA, typical.

Applying an external signal of 40% to 60% duty cycle and 500 to

700 kHz will synchronize the converter to your system requirements.

Free run clock frequency is approximately 600 kHz. If not used, the

sync terminal must be left unconnected.

Single output converters feature a trim range of as low as 80% to

as high as 110% of Vout nominal, depending on the model. To trim

up, connect a resistor from output common (pin 4) to the trim

terminal (pin 3). To trim down, connect a resistor from the positive

output (pin 5) to the trim terminal (pin 3). See Figure 6 and trim

tables for more information.

An undervoltage lockout of approximately 7 VDC keeps system

current levels low during startup.

Under short circuit conditions of 130% or more of full load current,

the converter will protect itself by shutting down. Short circuit dura-

tion should be brief because power dissipation may cause internal

temperatures to rise rapidly. Restart is automatic upon removal of

the short circuit.

RIM

YNCHRONIZATION

HORT

NDERVOLTAGE

Crane Aerospace & Electronics Power Solutions

IRCUIT

SINGLE

3.3

ROTECTION

OCKOUT

UNCTION

VDC O

MODELS

DUAL

±12

±15

±5

UTPUT

+5 & ±12

+5 & ±15

TRIPLE

Related parts for MHV2805D

MHV2805D Summary of contents

Page 1

MHV Single, Dual and Triple DC/DC Converters F EATURES • –55° to +125°C operation • VDC input • Fully Isolated • Optocoupler feedback • Fixed switching frequency 600 kHz typical, • Topology – Dual Single Ended Flybacks ...

Page 2

MHV Single, Dual and Triple DC/DC Converters OPERATING CONDITIONS AND CHARACTERISTICS Input Voltage Range • VDC continuous • Transient: see Electrical Characteristics tables Output Power • 15 watts (10 watts MHV283R3S) Lead Soldering Temperature (10 sec per ...

Page 3

MHV Single, Dual and Triple DC/DC Converters PIN OUT Pin Single Output Dual Output 1 Positive Input Positive Input 2 Inhibit Inhibit 3 Trim Positive Output 4 Output Common Output Common Neg. Aux. Output 5 Positive Output Negative Output Pos. ...

Page 4

MHV Single, Dual and Triple DC/DC Converters 28V Calculated Trim ( Trim down: R (kΩ Trim up: R (kΩ desired output voltage o Formula Values by Model 3. 3.7 3.7 B ...

Page 5

... TANDARD ICROCIRCUIT ERIES D (SMD RAWING IMILAR ART 5962-9852801HXC MHV283R3S/883 5962-9852201HXC MHV2805S/883 5962-9852301HXC MHV2812S/883 5962-9852401HXC MHV2815S/883 5962-9852501HXC MHV2805D/883 5962-9852601HXC MHV2812D/883 5962-9852701HXC MHV2815D/883 5962-9673001HXC MHV28512T/883 5962-9673101HXC MHV28515T/883 case option screening for triples*: 512 or 515 F (flanged case option), /ES (ES screening), /883 (Class H, QML) ...

Page 6

MHV Single, Dual and Triple DC/DC Converters Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. SINGLE OUTPUT MODELS PARAMETER CONDITIONS OUTPUT VOLTAGE OUTPUT CURRENT VDC IN OUTPUT POWER V ...

Page 7

... Load step transition ≥ 10 μs. Recovery = time to settle to within 1% of Vout final value. 5. Input step transition ≥ 10 μs. Recovery = time to settle to within 1% of Vout final value. www.craneae.com Crane Aerospace & Electronics Power Solutions 28 VOLT INPUT – 15 WATT MHV2805D MHV2812D MIN TYP MAX MIN 4 ...

Page 8

MHV Single, Dual and Triple DC/DC Converters Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. TRIPLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE 2 OUTPUT CURRENT OUTPUT POWER V ...

Page 9

MHV Single, Dual and Triple DC/DC Converter Cases Seam Seal Seal hole: 0.123 ±0.003 (3.12 ±0.08) 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 CAUTION Heat from ...

Page 10

MHV Single, Dual and Triple DC/DC Converter Cases Bathtub Seam Seal Seal hole: 0.092 ±0.002 (2.34 ±0.05) 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 CAUTION Heat ...

Page 11

MHV Single, Dual and Triple DC/DC Converter Cases Flanged cases: Designator "F" required in Case Option position of model number. Bathtub Seam Seal 1.350 max. (34.29) 1.170 (29.72) 0.040 dia. (1.02) 0.670 (17.02) 0.170 (4.32) 0.000 Seal hole: 0.920 ±0.002 ...

Page 12

MHV Single, Dual and Triple DC/DC Converter Cases Flanged cases: Designator “F” required in Case Option position of model number. Platform Seam Seal 1.110 max. (28.19) 0.955 (24.26) 0.040 dia (1.02) 0.555 (14.1) 0.155 (3.94) Platform Seam Seal 1.110 max. ...

Page 13

MHV Single, Dual and Triple DC/DC Converters 883 QML P LASS E LEMENT T EST ( COMPONENT LEVEL Element Electrical (probe) Element Visual Internal Visual Final Electrical Wire Bond Evaluation SLAM™/C-SAM: Input Capacitors only (Add’l test, not req. ...

Page 14

MHV Single, Dual and Triple DC/DC Converters 883 QML P LASS TEST Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. C, -65°C to 150°C, ambient Method 1010, Cond. B, -55°C to 125°C, ambient Constant ...

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