WR-K SERIES
Single, dual and triple output
•
•
•
•
•
•
•
Low profile – 0.91 inch high
Efficiencies to 84%
UL approved (Single outputs)
2:1 input range
PCB or chassis mounting
Pi input filter
OVP on all outputs
[ 2 YEAR WARRANTY ]
WR-K Series devices are efficient, high power DC/DC converters with single,
dual and triple outputs supplying 50 to 60 Watts. Their low profile 3.5 x 5.5 x
0.91 inch package provides a power density of 3.4 Watts per cubic inch.
Efficiencies range from 78% to 84%. These converters feature unique dual
power stages utilising forward converters with MOSFET switching at 100kHz. A
Pi network input filter is also included. High efficiency is virtually constant down
to 30% output loading. Other features include output short circuit protection,
overvoltage protection, remote sensing of primary output, input surge protection
and remote on/off control. The 2:1 input voltage ranges are 9 to 18VDC, 18 to
36VDC and 36 to 72VDC. Typical applications for WR-K Series power supplies
include telecoms, distributed power systems and industrial automation.
SPECIFICATION
OUTPUT SPECIFICATIONS
Voltage accuracy
Voltage adjustability
Remote sense
Line regulation
Load regulation
Note 3, 11
Ripple and noise
Transient response
Temperature coefficient
Overvoltage protection
Short circuit protection
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
INPUT SPECIFICATIONS CONTINUED
±1.0%
Remote ON/OFF
Logic compatibility
E
c
-ON
E
c
-OFF
Shutdown idle current
Input resistance
Control common
GENERAL SPECIFICATIONS
CMOS or open collector TTL
+5.5VDC min. or open-circuit
max. 1.8VDC
5mA
0VDC <Ein< 9VDC; 100kΩ
Referenced to input minus
Singles and duals, Note 7, 8
See Note 5, 6
HL-LL
Triples, –5V output
FL-0.25%FL
Dual output
Triples, –5V output
5Hz to 20MHz
25% step load,
change
±10%
Yes
±0.5%, max.
±1% max.
±1.0% max
±2% max.
±5.0% max.
75mV pk-pk
10mV rms, max.
Efficiency
Isolation voltage
See Note 9
Switching frequency
Approvals and
standards
Case material
Weight
(without heatsink)
MTBF
See table
Input/output
Input/case
Fixed
Safety
78%, min.
500VDC, min.
250VDC, min.
100kHz
UL478
Black coated aluminium with
non-conductive base
±1.0% error band
500µs recovery max.
±0.02%/°C, max.
See Note 4
All outputs
OVP clamp on
all outputs
Continuous
automatic recovery
Single/dual
Triple
See Note 10
454g (16.03oz)
390g (13.77oz)
840,000 hours
INPUT SPECIFICATIONS
Input voltage range
12VDC
24VDC
48VDC
9 to 18VDC
18 to 36VDC
36 to 72VDC
25mA
70mA
20mA
45mA
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient
–25°C to +55°C
Operating with
–25°C to +71°C
optional heatsink
Operating, case
-25°C to +85°C
Non-operating amb. -55°C to +105°C
Derating above
Linearly to 0 Watts
+85°C case
at +100°C
Cooling
Free-air convection
cooled or conduction
Non-condensing
Operating
Non operating
5% to 95% RH
10,000 feet max.
40,000 feet max.
2.5G rms (approx.)
No load input current
Singles, duals at 12Vin
Triples at 12Vin
Singles, duals at 24 and 48Vin
Triples at 24 and 48Vin
Input filter
Reverse voltage
protection
Surge protection
Note 12
Pi network
Internal shunt diode
Use external fuse
Transient clamp
Relative humidity
Altitude
Vibration, 5Hz to 500Hz Pressure
PAGE 1
DC/DC CONVERTERS
|
50-60W DC
50 to 60 Watt
Wide input DC/DC converters
INPUT
VOLTAGE
OUTPUT
VOLTAGE 1
OUTPUT
VOLTAGE 2
OUTPUT
VOLTAGE 3
OUTPUT
POWER
INPUT
TYPICAL
(1)
EFFICIENCY
CURRENT
CASE
OPTION
(2)
MODEL
NUMBER
SINGLE OUTPUT
9-18VDC
9-18VDC
9-18VDC
18-36VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
5V@10A
12V@5A
15V@4A
5V@10A
12V@5A
15V@4A
5V@10A
12V@5A
15V@4A
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
50W
60W
60W
50W
60W
60W
50W
60W
60W
5.3A
6.3A
6.3A
2.7A
3.1A
3A
1.3A
1.6A
1.6A
78%
80%
80%
78%
80%
80%
78%
80%
80%
-1, -3
-1,
-1, -3
-1, -3
-1
-1
-1
-1
WR12S05/50K
WR12S12/60K
WR12S15/60K
WR24S05/50K
WR24S12/60K
WR24S15/60K
WR48S05/50K
WR48S12/60K
WR48S15/60K
DUAL OUTPUT, Note 11
9-18VDC
9-18VDC
9-18VDC
9-18VDC
18-36VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
5V@5A
12V@2.5A
15V@2A
5V@5A
12V@2.5A
15V@2A
5V@5A
5V@5A
12V@2.5A
5V@5A
5V@5A
12V@2.5A
15V@2A
12V@2.5A
12V@2.5A
15V@2A
12V@2.5A
5V@5A
12V@2.5A
12V@2.50A
–
–
–
–
–
–
–
–
–
–
50W
60W
60W
55W
60W
60W
55W
50W
60W
55W
5.2A
6.1A
6.1A
5.66A
3.05A
3.05A
2.83A
1.27A
1.49A
1.4A
80%
82%
82%
81%
82%
82%
81%
82%
84%
82%
-1
-1
-1
-1, -3
-1, -3
-1, -3
-1, -3
-1
-1
-1
WR12D05/50K
WR12D12/60K
WR12D15/60K
WR12D05-12/55K
WR24D12/60K
WR24D15/60K
WR24D05-12/55K
WR48D05/50K
WR48D12/60K
WR48D05-12/55K
TRIPLE OUTPUT, Note 11
9-18VDC
9-18VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
36-72VDC
Notes
1
2
At nominal input voltage 12, 24 or 48VDC, full load.
To order the optional heatsink on the PC mount model, add the suffix '-1'
to the model number
e.g. WR24D05-12/55K-1.
To order the chassis
mount version with barrier terminal strip, add the suffix '-3' to the model
number
e.g. WR24D05-12/55K-3.
Limit one option per unit.
No minimum load required for operation.
5V outputs clamped at 6.8V; 12V or 15V outputs clamped at 18V.
Can compensate for up to 1V drop between converter and load (all single-
output versions, and output 1 of dual-output and triple-output versions).
Remote sense is provided on all singles, and output #1 of duals and triples.
If remote sense is not being utilised on single output units, for normal
operation pin 14 should be jumpered to pin 10 and pin 12 to pin 8. For
dual output units, if remote sense is not being utilised, connect pin 11 to
pin 10 and pin 8 to pin 9. Remote sense can compensate up to 1V drop
between converter and load.
Single output models: to trim up connect pin 13 to pin 12 through a 10kΩ
resistor; to trim down, connect pin 13 to pin 14 through a 10kΩ resistor.
Dual output models: the trim facility is provided only for output #2. To trim
up connect pin 13 to pin 12 through a 10kΩ resistor; to trim down connect
pin 13 to pin 14 through a 10kΩ resistor.
9 In many cases, the isolation specification may be upgraded.
10 MTBF figures are based on actual product performance.
11 The two-stage design of the WR-K Series provides isolation between
outputs which means outputs can be referenced as either positive or
negative. On dual output models, the outputs can be referenced as positive
or negative. On triple output models. The 5V main output is isolated from
the auxiliary outputs. No load sharing is possible.
12 For reverse input voltage protection, connect an external fuse in series with
the input.
13 Fixed frequency design provides for easier input filtering and better noise
performance.
14 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.
+5V@5A
+5V@5A
+5V@5A
+5V@5A
+5V@5A
+5V@5A
+12V@2.5A
+15V@2A
–12V@1.25A
–15V@1A
–12V@1.25A
–15V@1A
–12V@1.25A
–15V@1A
–5V@0.5A
–5V@0.5A
+12V@1.25A
+15V@1A
+12V@1.25A
+15V@1A
+12V@1.25A
+15V@1A
+5V@5A
+5V@5A
55W
55W
55W
55W
55W
55W
57.5W
57.5W
5.72A
5.72A
2.83A
2.83A
1.4A
1.4A
1.46A
1.46A
80%
80%
81%
81%
82%
82%
83%
83%
-1
-1, -3
-1, -3
-1, -3
-1
-1
-1
-1
WR12T05-12/55K
WR12T05-15/55K
WR24T05-12/55K
WR24T05-15/55K
WR48T05-12/55K
WR48T05-15/55K
WR48T12-05/55K
WR48T15-05/55K
3
4
5
6
7
8
International Safety Standard Approvals
UL478 File No. E131987 (48V)
http://www.artesyn.com
PAGE 2
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