WR12T05-12 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – 50 to 60 Watt Wide input DC/DC converters

[ 2 YEAR WARRANTY ]
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
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 All specifications are typical at nominal input, full load at 25°C unless otherwise stated
OUTPUT SPECIFICATIONS
Voltage accuracy
±1.0%
Voltage adjustability Singles and duals, Note 7, 8 ±10%
Remote sense
See Note 5, 6
Yes
Line regulation
HL-LL
Triples, –5V output
±0.5%, max.
±1% max.
Load regulation
Note 3, 11
FL-0.25%FL
Dual output
Triples, –5V output
±1.0% max
±2% max.
±5.0% 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 max.
Temperature coefficient
±0.02%/°C, max.
Overvoltage protection See Note 4
OVP clamp on
all outputs
Short circuit protection All outputs
Continuous
automatic recovery
INPUT SPECIFICATIONS
Input voltage range
12VDC
24VDC
48VDC
9 to 18VDC
18 to 36VDC
36 to 72VDC
No load input current
Singles, duals at 12Vin
Triples at 12Vin
Singles, duals at 24 and 48Vin
Triples at 24 and 48Vin
25mA
70mA
20mA
45mA
Input filter
Pi network
Reverse voltage
protection
Note 12
Internal shunt diode
Use external fuse
Surge protection
Transient clamp
INPUT SPECIFICATIONS CONTINUED
Remote ON/OFF
Logic compatibility
E_c-ON
E_c-OFF
Shutdown idle current
Input resistance
Control common
CMOS or open collector TTL
+5.5VDC min. or open-circuit
max. 1.8VDC
5mA
0VDC <Ein< 9VDC; 100kΩ
Referenced to input minus
GENERAL SPECIFICATIONS
Efficiency
See table
78%, min.
Isolation voltage
See Note 9
Input/output
Input/case
500VDC, min.
250VDC, min.
Switching frequency Fixed
100kHz
Approvals and
standards
Safety
UL478
Case material
Black coated aluminium with
non-conductive base
Weight
(without heatsink)
Single/dual
Triple
454g (16.03oz)
390g (13.77oz)
MTBF
See Note 10
840,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient –25°C to +55°C
Operating with
optional heatsink
–25°C to +71°C
Operating, case
-25°C to +85°C
Non-operating amb. -55°C to +105°C
Derating above
+85°C case
Linearly to 0 Watts
at +100°C
Cooling
Free-air convection
cooled or conduction
Relative humidity
Non-condensing
5% to 95% RH
Altitude
Operating
Non operating
10,000 feet max.
40,000 feet max.
Vibration, 5Hz to 500Hz Pressure
2.5G rms (approx.)
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