WR-U SERIES
Single and dual output
• 30 Watts output powe r
• UL approve d (48V input mode ls )
• 2:1 input range
• Efficie ncy to 86%
• Is olate d outputs
The WR-U series DC/DC converters accept a wide input voltage range of 9 to
18VDC, 18 to 36VDC, and 36 to 72VDC. A 100kHz switching regulator produces
operating efficiencies as high as 86% with output loads as light as 25% of full
load. These 30 Watt models provide for remote sensing, input/output isolation of
500VDC minimum, and short circuit protection. The WRU Series incorporates
six sided continuous EMI/RFI shielding. The “U” package measures 2.56 x 4.56
x 0.83 inches and is PCB mountable. Other pertinent specifications include:
overvoltage protection on all outputs, operating temperature range of –25°C to
71°C with no derating required and all models are free-air convection cooled.
[ 2 YEAR WARRANTY ]
SPECIFICATION All specifications are typical at nominal input, full load at 25°C unless otherwise stated
OUTPUT SPECIFICATIONS
INPUT SPECIFICATIONS CONTINUED
Voltage accuracy
±1.0%
±10% , max.
Yes
Remote ON/OFF
Logic compatibility
Ec-ON
CMOS or open collector TTL
Voltage adjustability
Remote sense
Singles
+5.5VDC min. or open-circuit
max. 1.8VDC
Ec-OFF
Singles
Shutdown idle current
Input resistance
Control common
5mA
0VDC <Ein< 9VDC; 100kΩ
Referenced to input minus
Line regulation
LL-HL, all outputs
±0.2% , max.
Load regulation
FL-NL
±5.0% , max.
±1.0% , max.
GENERAL SPECIFICATIONS
FL-0.25% FL
Efficiency
Typical
Input/Output
75% to 86%
Voltage balance
Ripple and noise
Duals
±2.0%
Isolation voltage
See Note 5
500VDC
250VDC
5Hz to 20MHz
75mV pk-pk
10mV rms, max.
Input/Case
Switching frequency
Fixed
100kHz
UL1950
Transient response
25% step load
change
±1.0% error band
500µs rec.
Approvals and
standards
Safety
Temperature coefficient
±0.02% /°C, max.
Case material
Black coated copper with
non-conductive base
Overvoltage protection Single +5V output
6.8V ±10%
18.0V ±10%
No
Single +12 and+15V
Duals
Material flammability
Weight
UL94V-0
390g (13.77oz)
840,000 hours
Short circuit protection
Continuous
automatic recovery
MTBF
See Note 6
INPUT SPECIFICATIONS
ENVIRONMENTAL SPECIFICATIONS
Input voltage range
12VDC
24VDC
48VDC
9 to 18VDC
18 to 36VDC
36 to 72VDC
Thermal performance
Operating ambient
-25°C to +71°C
Non-operating amb. -55°C to +105°C
Case, temp. rise
Derating
Cooling
+30°C at FL max.
None required
Free-air convection cooled
No load input current
12VDC
24VDC
48VDC
30mA
25mA
20mA
Relative humidity
Altitude
Non-condensing
5% to 95% RH
Input filter
See Note 7
Single outputs
Dual outputs
Pi filter
Low ESR cap
Operating
Non operating
10,000 feet max.
40,000 feet max.
Reverse voltage
protection
Internal shunt diode
(Use external fuse)
Vibration, Pressure
5Hz to 500Hz
2.5G rms (approx.)
Data Sheet © Artesyn Technologies
®
2000
The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising
from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.
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