BCP Models

7 5 W , D U A L O U T P U T , M I X E D - V O L T A G E D C / D C C O N V E R T E R S

Performance/Functional Specifications

Input

Input Voltage Range:

D24 Models

18-36 Volts (24V nominal)

D48 Models

36-75 Volts (48V nominal)

D24 Models

37.5-40.5 Volts (39V typical)

D48 Models

78.8-87.0 Volts (83V typical)

D24 Models

15.5-18 Volts (16.5V typical)

D48 Models

33.5-36 Volts (34.4V typical)

D24 Models

14-16 Volts (15.3V typical)

D48 Models

30.5-33.5 Volts (31.8V typical)

Input Current:

Normal Operating Conditions

See Ordering Guide

Minimum Input Voltage:

D24 Models

5.02 Amps maximum

D48 Models

2.51 Amps maximum

Standby Mode:

Off, OV, UV, Thermal Shutdown

17mA typical

Input Reflected Ripple Current:

Source Impedance <0.1

Ω

22µF Low-ESR Capacitor

53mArms, 150mAp-p maximum

Input Filter Type

Pi (0.47pF - 4.7µH - 3µF)

D24 Models

1 minute duration, 6A maximum

D48 Models

1 minute duration, 4A maximum

D24 & D48 Models

D24N & D48N" Models

Output

5V Output

±2% maximum

3.3V Output

±2% maximum

Minimum Loading Per Specification

No load

See Ordering Guide

Line/Load Regulation

See Ordering Guide

Efficiency

See Ordering Guide and Efficiency Curves

±10% independent

Isolation Voltage:

Input-to-Output

1500Vdc minimum

Input-to-Case

1000Vdc minimum

Output-to-Case

1000Vdc minimum

Isolation Capacitance

470pF

Isolation resistance

100M

Ω

16-20 Amps

16-20 Amps

Constant current 25A, indefinite

Temperature Coefficient

±0.02% per °C

Magnetic feedback, latching

5V Output

6.8 volts

3.3V Output

4.5Volts

Dynamic Characteristics

Dynamic Load Response:

450µsec maximum

450µsec maximum

30msec maximum

20msec maximum

Switching Frequency

350kHz (±35kHz)

Environmental

MTBF

Bellcore, ground fixed, controlled

D24 Models

1.49M hours (case @ 50°C)

D48 Models

1.72M hours (case @ 50°C)

Operating Temperature (Ambient):

θ Case to Ambient, No Heatsink

6.8°C/Watt

Without Derating

–40 to +45°C (with heat sink)

With Derating

To +100°C (See Derating Curves)

Case Temperature:

Maximum Allowable

+100°C

+100°C minimum, +110°C maximum

Storage Temperature

–40 to +120°C

Physical

Dimensions

2.3" x 2.4" x 0.525" (58.4 x 61 x 13.3mm)

Pin 2

Case/Pin Material

Diallyl phthalate, UL94V-0 rated, aluminum

baseplate; solder-tinned brass pins

Weight

4.2 ounces (118 grams)

Primary to Secondary Insulation Level Basic

Absolute Maximum Ratings

➀

Models are specified at "full load" (5V & 3.3V @ 7.5A), with an external 22µF, low-ESR,

input capacitor and 10µF tantalum in parallel with 1µF ceramic output capacitors.

➁

See Technical Notes for details.

➂

Devices may be ordered with opposite polarity (pin 3 open = off). See Part Number

Suffixes and Technical Notes for additional information.

➃

Output noise may be further reduced with the installation of additional external output

capacitors. See Technical Notes.

➄

➅

Demonstrated MTBF available on request.

Input Voltage:

Continuous:

D24 Models

40.5 Volts

D48 Models

87 Volts

Transient (100msec): D24 Models

50 Volts

D48 Models

100 Volts

Input Current must be limited. 1 minute

duration. Fusing recommended.

D24 Models

6 Amps

D48 Models

4 Amps

3.3V Outputs

3.8 Volts, latching

5V Outputs

6.2 Volts, latching

Current limited. Devices can withstand

an indefinite output short circuit.

Storage Temperature

–40 to +120°C

Lead Temperature (Soldering, 10 sec.) +300°C

These are stress ratings. Exposure of devices to any of these conditions may adversely

affect long-term reliability. Proper operation under conditions other than those listed in the

Performance/Functional Specifications Table is not implied, nor recommended.

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