International Safety Standard Approvals
UL478 File No. E131987 (WR-XC)
GENERAL SPECIFICATIONS
Efficiency Full load. See table 75%, min.
Isolation voltage WR/MP, Input/output 500VDC
See Note 4 WR/XC, Input/output 500VDC
WR/XC, output/case 250VDC
Switching frequency Fixed 100kHz
Approvals and Safety (WR-XC) UL478
standards
Case material XC case Black coated metal
with non-conductive base
MP case Non-conductive
black plastic
Material flammability UL94V-0
Weight XC case 170g (6.0oz.)
MP case 200g (7.06oz.)
MTBF See Note 6 840,000 Hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient -25°C to +71°C
Non-operating amb. -55°C to +105°C
Case temp. rise +30°C at FL max.
Derating None required
Cooling Free air convection cooled
Relative humidity Non-condensing 5% to 95% RH
Altitude Operating 10,000 feet max.
Non operating 40,000 feet max.
Vibration 5Hz to 500Hz 2.5G rms (approx.)
WR-XC and WR-MP SERIES
Single and dual output
[ 2 YEAR WARRANTY ]
• 2:1 input range
• WR-XC UL approved
• Efficiency to 86%
• Isolated outputs
• Six sided shield
• Remote on/off control on XC models
• 100kHz switching frequency
• Two package sizes available
The WR series DC/DC converters accept a wide input voltage range of 9-
18VDC, 18-36VDC or 36-72VDC. A 100kHz switching regulator produces
operating efficiencies up to 86% at full load and as high as 80% at light load. In
the case of duals, full power may be taken from either output. All models will
tolerate a short circuit between positive and negative outputs or between either
output and common indefinitely. Load regulation of ±1%, line regulation of
±0.2%, Pi input filtering and remote on/off control (XC package only) which can
be improvised as an undervoltage shutdown signal, are featured on all models.
Six-sided continuous EMI/RFI shielding is provided in both XC and MP
packages. The operating temperature range is –25°C to +71°C convection
cooled, with no derating required.
SPECIFICATION
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
PAGE 1
OUTPUT SPECIFICATIONS
Voltage accuracy ±1.0%
Voltage balance Dual outputs ±2.0%
Voltage adjustability WR/XC, single output ±10% max.
Line regulation HL-LL ±0.2%
Load regulation FL-NL ±5.0%, max.
FL-0.25% FL ±1.0%, max.
Ripple and noise 5Hz to 20MHz 75mV pk-pk,
10mV rms max.
Transient response 25% step load ±1.0% error band
change 500µs recovery
Temperature coefficient ±0.02%/°C, max.
Overvoltage protection 5V single output 6.8V ±10%
(Zener clamp) 12 and 15V singles 18.0V ±10%
Short circuit protection Continuous
automatic recovery
INPUT SPECIFICATIONS
Input voltage range 12VDC 9-18VDC
24VDC 18-36VDC
48VDC 36-72VDC
No load input current 12VDC 30mA
24VDC and 48VDC 20mA
Input filter Pi type
Remote ON/OFF Refers to XC package only
Logic compatibility CMOS or open collector TTL
Ec-ON +5.5VDC or open-circuit
Ec-OFF 1.8VDC
Shutdown idle current 5mA
Input resistance 0VDC <Ein< 9VDC; 100kΩ
Control common Referenced to input minus
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.
0.700
(17.8)
12
43
567
8
BOTTOM
VIEW
ALL DIMENSIONS IN INCHES (mm)
3.00
(76.2) 2.500
(63.5)
0.400
(10.2)
0.200
(5.1)
0.300
(7.6)
0.800
(20.3)
0.600
(15.2)
2.56
(66.0)
1.50
(38.1)
0.400
(10.2)
0.30
(7.6)
0.22 MIN.
(5.6)
0.83
(21.1)
0.040 DIA.
(1.0)
XC CASE
PIN CONNECTIONS
MP MP XC (5) XC
PIN SINGLES DUALS SINGLES DUALS
1 + Input + Input + Input + Input
2 – Input – Input – Input – Input
3 + Output + Output No Pin + Output
4 No Pin No Pin Trim Common
5 N/C Common No Pin – Output
6 No Pin No Pin + Output No Pin
7 – Output – Output – Output No Pin
8 N/A N/A
Remote On/Off Remote On/Off
Control Control
INPUT OUTPUT OUTPUT INPUT TYPICAL REGULATION MODEL
VOLTAGE VOLTAGE CURRENT CURRENT EFFICIENCY LINE LOAD (1) NUMBER
9-18VDC 5VDC 3000mA 1700mA 75% ±0.2% ±1.0% WR12S05/3000XC
9-18VDC 12VDC 1250mA 1600mA 78% ±0.2% ±1.0% WR12S12/1250XC
9-18VDC 12VDC 1250mA 1600mA 78% ±0.2% ±1.0% WR12S12/1250MP
18-36VDC 5VDC 3000mA 810mA 77% ±0.2% ±1.0% WR24S05/3000XC
18-36VDC 5VDC 3000mA 810mA 77% ±0.2% ±1.0% WR24S05/3000MP
18-36VDC 12VDC 1250mA 780mA 80% ±0.2% ±1.0% WR24S12/1250XC
36-72VDC 5VDC 3000mA 410mA 77% ±0.2% ±1.0% WR48S05/3000XC
36-72VDC 12VDC 1250mA 390mA 80% ±0.2% ±1.0% WR48S12/1250XC
9-18VDC ±12VDC ±625mA 1520mA 82% ±0.2% ±1.0% WR12D12/625XC
9-18VDC ±15VDC ±500mA 1520mA 82% ±0.2% ±1.0% WR12D15/500XC
9-18VDC ±12VDC ±625mA 1520mA 82% ±0.2% ±1.0% WR12D12/625MP
18-36VDC ±12VDC ±625mA 750mA 84% ±0.2% ±1.0% WR24D12/625XC
18-36VDC ±15VDC ±500mA 750mA 84% ±0.2% ±1.0% WR24D15/500XC
18-36VDC ±12VDC ±625mA 750mA 84% ±0.2% ±1.0% WR24D12/625MP
18-36VDC ±15VDC ±500mA 750mA 84% ±0.2% ±1.0% WR24D15/500MP
36-72VDC ±12VDC ±625mA 390mA 86% ±0.2% ±1.0% WR48D12/625XC
36-72VDC ±15VDC ±500mA 390mA 86% ±0.2% ±1.0% WR48D15/500MP
Notes
1 Load regulation is measured from full load to 25% full load.
2 Standard specifications are conservative and can be optimised for specific
applications. In particular, converter start-up at lower than specified
temperature, wider input voltage range and output voltage adjustment are
all relatively simple modifications to the standard product. Consult factory
for details.
3 Fixed frequency design provides for easier input filtering and better noise
performance.
4 In many cases, the isolation specification may be upgraded. Consult
factory for details.
5 XC case only (single output models): to trim up connect pin 4 to pin 7
through a 10kΩresistor, or pin 4 to pin 6 to trim down.
6 MTBF figures are based on actual product performance. Consult factory
for details.
ALL DIMENSIONS IN INCHES (mm)
MP CASE
1
2
3.5
(88.9)
1.6
(40.6)
2.2
(55.9)
34567
2.5
(63.5)
0.5
(12.7)
0.6
(15.2)
0.15
(3.8)
0.2
(5.1)
0.88
(22.4)
0.04
(1.0)
1.6
(40.6)
0.5
(12.7) 0.6
(15.2)
INSERT 4-40
THREAD
3.2 (0.125)
DEEP
15 Watt
Wide input DC/DC converters
DC/DC CONVERTERS |
15W DC
PAGE 2
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