BWR-5/250-D48 Ver la hoja de datos (PDF) - DATEL Data Acquisition products

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BWR-5/250-D48

Low-Cost, DIP-Packaged 3 Watt, DC/DC Converters

DATEL Data Acquisition products  

3W, 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:

"D5" Models

"D12" Models

"D48" Models

4.5-9 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, 2A maximum)

Output

VOUT Accuracy (50% load)

±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

1000Vdc, minimum

Current Limiting:

"D5" Models

"D12" and "D48" Models

Power-limiting technique, auto-recovery

Hiccup technique, auto-recovery

Dynamic Characteristics

Transient Response (50% load step) 200µsec to ±1% of final value

Switching Frequency:

"D5" Models

"D12" and "D48" Models

Operating Temperature ➃

(Ambient, no derating)

200kHz

170kHz

Environmental

–25 to +75°C

Storage Temperature

–40 to +100°C

Physical

Dimensions

1.25" x 0.8" x 0.45" (31.8 x 20.3 x 11.4mm)

Case Material

Diallyl phthalate, UL94V-0-rated

Pin Material

Brass, solder coated

Weight

0.5 ounces (14.2 grams)

➀ These power converters require a minimum 10% loading 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 and 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 Devices can be warranted or screened for lower-temperature operation.

Contact DATEL Applications Engineering for details. See DATEL's new BST 3W Models

for guaranteed operation to –40°C.

Absolute Maximum Ratings

Input Voltage:

"D5" Models

"D12" Models

"D48" Models

Input Reverse-Polarity Protection

Output Overvoltage Protection

Output Current

Storage Temperature

Lead Temperature (soldering, 10 sec.)

12 Volts

20 Volts

80 Volts

Current must be <2A. Brief duration

only. Fusing recommended.

None

Current limited. Max. current and

short-circuit duration are model

dependent. "D12" and "D48" models

can withstand sustained output short

circuits.

–40 to +100°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 6 and 8), with either output grounded. The

Common (pins 5 and 7) should be left open. Minimum 20% loading is

recommended under these conditions.

Filtering and Noise Reduction

All BWR 3 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 capacitors should be

connected between their respective output pin (pin 6 or 8) and Common (pins 5

and 7) 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

"D5" Models

"D12" Models

"D48" Models

47µF, 15V

10µF, 35V

4.7µF, 100V

To Reduce Output Ripple

±5V Outputs

±12/15V Outputs

47µF, 10V, Low ESR

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 requirements. Contact

our Applications Engineering Group for additional details.

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