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BWR-5/700-D5A

Dual Output A-Series, BWR Models High-Reliability, 2 x 1 7-10 Watt, DC/DC Converters

DATEL Data Acquisition products  

7-10W, DUAL OUTPUT DC/DC CONVERTERS

BWR Models

Performance/Functional Specifications

Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀

Input

Input Voltage Range:

D5A Models

D12A Models

D48A Models

4.7-7.25 Volts (5V nominal)

9-18 Volts (12V nominal)

18-72 Volts (48V nominal)

Input Current

See Ordering Guide

Input Filter Type ➁

Pi

Reverse-Polarity Protection

Yes (Instantaneous, 6A maximum)

Output

VOUT Accuracy (50% load):

±5V Outputs

±12/15V Outputs

±1.5%, maximum

±1%, maximum

Temperature Coefficient

±0.02% per °C

Ripple/Noise (20MHz BW) ➁

See Ordering Guide

Line/Load Regulation

See Ordering Guide

Efficiency

See Ordering Guide

Isolation Voltage ➂

1500Vdc, minimum

Isolation Capacitance

200pF

Current Limiting

Auto-recovery

Overvoltage Protection ➃

Zener/transorb clamps, magnetic feedback

Dynamic Characteristics

Transient Response (50% load step) 200µsec max. to ±1.5% of final value

Switching Frequency

165kHz (±15kHz)

Environmental

Operating Temperature (ambient):

Without Derating

With Derating

–40 to +65/70°C (Model dependent)

to +100°C (See Derating Curves)

Storage Temperature

–40 to +105°C

Physical

Dimensions

2" x 1" x 0.375" (51 x 25 x 9.5mm)

Shielding

5-sided

Case Connection:

D5A and D12A Models

D48A Models

Pin 2 (–VIN)

Pin 1 (+VIN)

Case Material

Corrosion resistant steel with

non-conductive, epoxy-based black

enamel finish and palstic baseplate

Pin Material

Brass, solder coated

Weight

1.3 ounces (37 grams)

➀ These power converters require a minimum 20% loading on each output to maintain

specified regulation. Operation under no-load conditions will not damage these devices;

however they may not meet all listed specifications.

➁ Application-specific internal input/output filtering can be recommended or perhaps added

internally upon request. Contact DATEL Applications Engineering for details.

➂ Devices can be screened or modified for higher guaranteed isolation voltages.

Contact DATEL Applications Engineering for details.

➃ D5A Models: Zener/transorb only

Absolute Maximum Ratings

Input Voltage:

D5 Models

D12 Models

D48 Models

Input Reverse-Polarity Protection

Output Overvoltage Protection

±5V Outputs

±12V Outputs

±15V Outputs

Output Current

Storage Temperature

Lead Temperature (soldering, 10 sec.)

10 Volts

20 Volts

80Volts

Current must be <6A. Brief

duration only. Fusing recommended.

13 Volts, limited duration

28 Volts, limited duration

36 Volts, limited duration

Current limited. Max. current and

short-circuit duration are model

dependent.

–40 to +105°C

+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.

TECHNICAL NOTES

Floating Outputs

Since these are isolated DC/DC converters, their outputs are "floating." Any

BWR model may be configured to produce an output of 10V, 24V or 30V

(for ±5V, ±12V or ±15V models, respectively) by applying the load across

the +Output and –Output pins (pins 3 and 5), with either output grounded.

The Common pin (pin 4) should be left open. Minimum 20% loading is

recommended under these conditions.

Filtering and Noise Reduction

All A-Series BWR 7-10 Watt DC/DC Converters achieve their rated ripple and

noise specifications without the use of external input/output capacitors. In

critical applications, input/output ripple and noise may be further reduced by

installing electrolytic capacitors across the input terminals and/or low-ESR

tantalum or electrolytic capacitors across the output terminals. Output capac-

itors should be connected between their respective output pin (pin 3 or 5) and

Common (pin 4) as shown in Figure 2. The caps should be located as close

to the power converters as possible. Typical values are listed in the tables

below. In many applications, using values greater than those listed will yield

better results.

To Reduce Input Ripple

"D5A" Models

"D12A" Models

"D48A" Models

47µF, 10V

20µF, 35V

10µF, 100V

To Reduce Output Ripple

±5V Output

47µF, 10V, Low ESR

±12/15V Outputs

22µF, 20V, Low ESR

In critical, space-sensitive applications, DATEL may be able to tailor the

internal input/output filtering of these units to meet your specific require-

ments. Contact our Applications Engineering Group for additional details.

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