BWR-5/500-D48 Ver la hoja de datos (PDF) - DATEL Data Acquisition products
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BWR-5/500-D48 Datasheet PDF : 5 Pages
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MINIATURE, 5 WATT 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:
"D24" Models
"D48" Models
18-36 Volts (24V nominal)
36-72 Volts (48V nominal)
Input Current
See Ordering Guide
Input Filter Type ➁
LC on "D24" models
C on "D48" models
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 Regulation
See Ordering Guide
Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage ➂
1000Vdc, minimum
Current Limiting
Auto-recovery
Overvoltage Protection
Zener/transorb clamps
Dynamic Characteristics
Transient Response (50% load step) 500µsec max. to ±1.5% of final value
Switching Frequency
170kHz (±10kHz)
Environmental
Operating Temperature (ambient): ➃
Without Derating
With Derating
–25 to +60°C
to +95°C (See Derating Curve)
Storage Temperature
–55 to +125°C
Physical
Dimensions
1" x 1" x 0.45" (25.4 x 25.4 x 11.4mm)
Shielding
5-sided
Case Connection:
"D24" Models
"D48" Models
Pin 2 (–VIN)
Pin 1 (+VIN)
Case Material
Corrosion resistant steel with
epoxy-based enamel finish
Pin Material
Brass, solder coated
Weight
0.7 ounces (20 grams)
➀ These power converters require a minimum 20% 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 on request. Contact DATEL Applications Engineering for details.
➂ Units can be screened or modified for higher guaranteed isolation voltages.
Contact DATEL Applications Engineering for details.
➃ Units can be screened for lower-temperature operation.
Contact DATEL Applications Engineering for details.
Absolute Maximum Ratings
Input Voltage:
"D24" 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.)
44 Volts
88 Volts
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
Current limited. Max. current and
short-circuit duration are model
dependent.
–55 to +125°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 3 and 6), with either output grounded. The
Common (pin 4) should be left open. Minimum 20% loading is recommended
under these conditions.
Filtering and Noise Reduction
All BWR 5 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 install-
ing low-ESR, tantalum or electrolytic capacitors across the input
and/or output terminals. Output capacitors should be connected between
their respective output pin (pin 3 or 6) and Common (pin 4)as shown in
Figure 2. The capacitors should be located as close to the power converters
as possible. Typical values are listed below. In many applications, using
values greater than those listed will yield better results.
To Reduce Input Ripple
"D24" Models
"D48" Models
20µF, 50V
10µF, 100V
To Reduce Output Ripple
±5V Outputs
±12/15V Outputs
47µF, 10V, Low ESR
33µF, 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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