Rugged, wide input range, long-life DC-DC converter - Industrial Grade0 pages

150W, Opto-less, Long Life, Wide Input Range DC/DC Converter
DHR 150-24FT
•
•
•
•
•
•
•
•
•

No optocouplers, low component count
Rugged industrial quality construction
Conformal coating
Excellent EMI performance
High input/output isolation
Conduction/convection cooled
Operation up to 70ºC
Full electronic protection
Customized versions available

This rugged, industrial quality DC/DC converter is designed for an operating life extending to 30 years. By eliminating
optocouplers in the feedback loop and significantly reducing the component count, the MTBF of the unit is greatly improved
over conventional designs. All heat generating components are installed on aluminum heatsink blocks which are cooled via
baseplate to a heat-sinking surface and by natural convection. Conformal coating provides additional environmental protection.
Large design headrooms and the use of components with established reliability also contribute to the long operating life of the
unit. Customized versions are available. The unit is manufactured at our plant under strict quality control.

SPECIFICATIONS
Input Voltage
20-60Vdc
43-101Vdc
60-154Vdc
90-360Vdc
Other inputs available on request
Input Protection
Inrush current limiting
Varistor
Reverse polarity protection
Internal safety fuse
Lower voltage than the specified
minimum input will not damage the
unit
Isolation
2250VDC input to chassis
5000VDC input to output
12mm spacing
500VDC output to chassis
Standards
Designed to meet EN 60950-1
and corresponding UL and CSA
standards.
Meets the requirements for
CE marking

Output Voltages
24V ± 0.3V/6A
150W continuous
The output is floating, either
terminal can be grounded
Other outputs on request.
Redundancy Diode
Not installed
Available as option
Line/Load Regulation
Better than 1% from no load to
full load.
Max 1.5% combined from no load
to full load
Dynamic Response
Max 5% voltage deviation for 10%
to 50% load step, with better than
5msec recovery time
Output Ripple/Noise
Less than 80mV RMS or 400mV
peak to peak (20MHz BW)

EMI
EN55022 Class B

Output Overload Protection
Rectangular current limiting with
short-circuit protection

Switching Frequency
40-150kHz, load and input voltage
dependent

Efficiency
Over 85% at full load on the
24V output model

Indicators
Green “Output ON” LED visible
through the cooling slots

Operating Temperature Range
0ºC to 70ºC for full specification
Extended temperature ranges
available on request

Control Input
None

Temperature Drift
0.03% per ºC over operating
temperature range
Cooling
Conduction to customer heat-sink
or chassis and natural convection
Environmental Protection
Ruggedizing
Conformal coating
Shock/Vibration
IEC 61373 Cat 1 A&B

Alarm Output
Not installed on standard version
Package/Dimensions (W x H x L)
F1: 114 x 51 x 201 mm
(4.5” x 2” x 7.9”) including
terminal block and flanges
Mounting holes are clear
Weight
0.8 kg (1.8 lbs)
Connections
9-pole barrier-type terminal block,
with 3/8” spacing

Humidity
5 – 95% non-condensing

RoHS Compliance
Fully compliant

MTBF
170,000 hours @ 45 oC
Demonstrated MTBF is
significantly higher

Warranty
Two years subject to application
within good engineering practice

Output Overvoltage Protection
Transzorb clamp on the output

Terminal Block Pin-out

Hold Up Time
Minimum 20ms at 150Vdc
and higher
Please note that the above specifications set only generic guidelines for the design. Customizing and
enhancements are possible. Please contact us with your specific requirements.
Designer and manufacturer of quality converters, inverters, DC-output UPS systems, complete rack mount systems and DC-input fluorescent lamp
inverters since 1982. Custom or standard. Absopulse is a BABT-approved Facility.
ABSOPULSE ELECTRONICS LTD
110 Walgreen Road, Ottawa. Ontario. K0A 1L0. CANADA
Tel: +1-613-836-3511 | Fax: +1-613-836-7488 E-mail:
absopulse@absopulse.com | http://www.absopulse.com
AC/DC Power Supplies & Power Systems
January 28, 2014/TS/CL
http://www.absopulse.com/Absopulse_AC_DC_powersupplies_batterychargers.php

Made in Canada