BWS DC/DC Series Data Sheet
2.5 Watts
Features
• Industry-standard DIP package
• Industry-standard pinout
• 85°C case operation
• Short circuit protection
• Wide range inputs
• Input pi filter
• Regulated outputs
• 500V isolation
Description
BWS DC/DC converters offer excellent regulation and isolation in an industry-standard DIP package. The BWS is
ideal for industrial, telecom, and networking applications, and features short-circuit protection, a low profile, and
500 VDC isolation. Please see the BWD Series for dual-output applications.
Technical Specifications
Input
Voltage Range
5 VDC Nominal
12 VDC Nominal
Reflected Ripple
Reverse Input Current
4.5 - 9 VDC
9 - 18 VDC
20% Iin Max.
100% Iin Max.
Switching Frequency
Isolation
Input - Output
Input - Case
Output - Case
Isolation Resistance - Input to Output
Isolation Capacitance - Input to Output
No Load Input Power
Case Temperature
Standard Operating Range
Industrial Range (Add -I to p/n)
Storage Range
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
Safety
Weight (approx.)
General
200 kHz
500 VDC
500 VDC
500 VDC
109 Ohms
80 pF
0.70 W
-25 to +85°C
-40 to +85°C
-40 to +125°C
95%
5 g, 10 - 55 Hz
UL, cUL, TUV
0.6 oz
Output
Setpoint Accuracy
Line Regulation Vin Min. - Vin Max., Iout Rated
Load Regulation Iout Min. - Iout Max., Vin Nom.
Minimum Output Current
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
Temperature Coefficient
Ripple And Noise, 20 MHz BW
Short Circuit Protection 1
Current Limit
±5%
±1.5% Vout
±2.5% Vout
10% Iout Rated
25% Iout
1% Vout
500 ms
0.02%/°C
150 mV
Continuous
180%
Notes
1 Continuous short circuit protection is provided. Long-term continuous
operation in this mode is not recommended. Converter will auto-restart
once fault has been removed.
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with
commercial wave-soldering equipment.
Safety: Agency approvals may vary from model to model. Please consult
factory for specific model information.
REV. SEP 12, 2003
Page 1 of 2
BWS DC/DC Series Data Sheet
2.5 Watts
Model Selection
MODEL
INPUT VOLTAGE
(VOLTS)
INPUT VOLTAGE
RANGE (VOLTS)
MAXIMUM INPUT
CURRENT (AMPS)*
OUTPUT
VOLTAGE (VOLTS)
RATED OUTPUT
CURRENT (AMPS)
RIPPLE & NOISE
pk-pk (mV)
TYPICAL
EFFICIENCY**
BWS505
BWS512
BWS1205
BWS1212
BWS1215
BWS4805
NOTES:
5
5
12
12
12
48
4.5 - 9
4.5 - 9
9 - 18
9 - 18
9 - 18
36 - 72
0.85
0.95
0.45
0.5
0.5
0.10
5
12
5
12
15
5
0.5
0.25
0.5
0.25
0.2
0.5
150
150
150
150
150
150
71%
79%
70%
79%
79%
74%
* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.
Model numbers highlighted in yellow or shaded are not recommended for new designs.
Mechanical Drawing
BOTTOM VIEW
Thermal Impedance
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
23.6 °C/W
16.7 °C/W
13.1 °C/W
9.4 °C/W
8.5 °C/W
Pin
1 & 24
2 & 23
3 & 22
4 & 21
5 & 20
6 & 19
7 & 18
8 & 17
9 & 16
10 & 15
11 & 14
12 & 13
Function
No Pin
-Vin / +Vin
-Vin / +Vin
No Pin
No Pin
No Pin
No Pin
No Pin
NC / -Vout
NC / NC
NC / +Vout
No Pin
Inches:
.XX ± 0.040
.XXX ± 0.010
Pin:
± 0.002
Tolerances
(Millimeters)
.X ± 1.0
.XX ± 0.25
± 0.05
(Dimensions as listed unless otherwise
specified.)
Note:
Thermal impedance data is dependent
on many environmental factors. The
exact thermal performance should be
validated for specific application.
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional President of
Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
REV. SEP 12, 2003
Page 2 of 2
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