MHV2805DF datasheet(2/14 Pages) CRANE

2 / 14 page

MHV Single, Dual and Triple DC/DC Converters

Crane Aerospace & Electronics Power Solutions

Page 2 of 14

Rev D- 20060710

www.craneae.com

28 VOLT INPUT – 15 WATT

OPERATING CONDITIONS AND CHARACTERISTICS

Input Voltage Range

• 16 to 50 VDC continuous

• Transient: see Electrical Characteristics tables

Output Power

• 15 watts (10 watts MHV283R3S)

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –65°C to +150°C

Case Operating Temperature (Tc)

• –55°C to +125°C full power

• –55°C to +130°C absolute

Derating Output Power/Current

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

Output Voltage Temperature Coefficient

• 100 ppm/°C typical

Current Limit

• 130% of full load typical at 25°C

Isolation

• 100 megohm minimum at 500 V

Audio Rejection

• 30 dB typical

Conversion (Switching) Frequency

• Free run mode 300 kHz typical

245 kHz. min, 355 kHz. max

@ Tc = -55° to +125°C

Inhibit Pin Voltage (unit enabled)

• 11 V typical

Undervoltage Lockout

• 7 V input typical

Clock Frequency

• External sync range 490 to 710 kHz.

SYNC AND INHIBIT

Sync In (490 to 710 kHz)

• Duty cycle 40% min, 60% max

• Logic low 0.8 V max

• Logic high 4.5 V min, 10 V max

• Referenced to input common

• If not used, leave unconnected

Sync Out - Referenced to input common

Inhibit (INH1, INH2) : TTL Open Collector

• Logic low (output disabled)

Logic low voltage ≤0.8 V

Inhibit pin current

8.4 mA typical, 10 mA maximum

• Referenced to input common

• Logic high (output enabled)

Open collector

Unconnected or 11.5 to 50 V

MECHANICAL AND ENVIRONMENTAL

Size (maximum)

Non-flanged Single and dual output models

2.125 x 1.125 x 0.400 inches (53.98 x 28.58 x 10.16 mm)

See case H2 for dimensions.

Triple output models

1.950 x 1.350 x 0.405 inches (49.53 x 34.29 x 10.29 mm)

See case F1 for dimensions.

Flanged Single and dual output models

2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm)

See case K3 for dimensions.

Triple output models

2.720 x 1.350 x 0.405 inches (69.09 x 34.29 x 10.29 mm)

See case J1 for dimensions.

Weight (maximum)

60 grams typical

Screening

Standard, ES, or 883 (Class H). See “883, Class H, QML

Products – Element Evaluation” and “883, Class H, QML

Products – Environmental Screening” for more information.

Positive

Input

180o

Input

Common

Sync.

Positive

Output,

Main (+5)

Output

Common

Positive

Output,

Auxiliary

Negative

Output,

Auxiliary

Feedback Isolator

PWM CM

Controller

PWM CM

Controller

FIGURE 1: MHV TRIPLE BLOCK DIAGRAM

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