DC/DC CONVERTERS 36-50W High Efficiency DC/DC Converters 1
2 YEAR WARRANTY
EXQ50 Series
Single output
•High efficiency topology, 90% at 5V and 86.5% typical at 1.8V
•Low profile, open-frame package
•Industry standard footprint
•Wide operating temperature, -40°C to +90°C
(with derating)
•90% to 110% output trim
•No minimum load
•Remote on/off
EXQ50 series high-efficiency, open-frame, isolated DC/DC converters have an industry
standard quarter-brick footprint and a height of just 0.4 inches. The converters provide
up to 50 Watts of output power, are capable of delivering very high current at low
voltages, and offer exceptional power densities for today’s high-end applications. The
first four models in the series feature an input voltage range of 33 to 75VDC and are
available with output voltages of 5.0V, 3.3V, 2.5V or 1.8V. The output voltage of each
model is adjustable from 90% to 110% of its nominal value. Typical efficiencies are
90% for the 5V model, 89% for the 3.3V, 88% for the 2.5V and 86.5% for the 1.8V. All
EXQ50 series converters have a remote on/off capability, and are fully protected against
over-voltage, over-temperature and short-circuit conditions. Featuring full international
safety approval, including EN60950 (TÜV Product Service) and UL/cUL 60950, EXQ50
series converters reduce compliance costs and time to market.
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
EMC CHARACTERISTICS
Conducted emissions EN55022 (See Note 2) Level A
EN55022 (See Note 2) Level B
Radiated emissions EN55022 Level A
Immunity:
ESD air EN61000-4-2 8kV, 15kV
ESD contact EN61000-4-2 6kV, 8kV
EFT DC Input EN61000-4-4 2kV (NP)
Radiated field enclosure EN61000-4-3 10V/m
Conducted (DC power) EN61000-4-6 10V (NP)
Conducted (signal) EN61000-4-6 10V (NP)
Input transients ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency See table
Operational insulation Input/output 1500VDC
Switching frequency Fixed 350kHz
Approvals and EN60950 (TÜV Product Service)
standards (See Note 4) UL/cUL60950
Material flammability UL94V-0
Weight 25g (0.88oz)
MTBF MIL-HDBK-217F >292,000 hours
@ 40°C, 100% load
ground benign
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating temperature -40°C to +90°C
Non-operating -40°C to +125°C
OUTPUT SPECIFICATIONS
Total error (See Note 8) 4.5%
Set point accuracy ±2.0% max.
Line regulation Low line to high line 0.3% max.
Load regulation Full load to min. load 0.3% max.
Voltage adjustability 90% to 110%
Output remote (See Note 9) 10%
sense range
Minimum load 0A
Overshoot At turn-on and tur n-off None
Undershoot None
Ripple and noise 5Hz to 20MHz 120mV pk-pk
30mV rms
Transient response 5% max. deviation
(See Note 1) 200µs recovery to
within total error band
INPUT SPECIFICATIONS
Input voltage range 48Vin nominal 33 to 75VDC
Input current No load 60mA
Remote OFF 25mA
Input current (max.) 1.73A max. @ Io max.
(See Note 3) and Vin = 33
Input reflected ripple (See Note 5) 110mA (pk-pk)
Active high remote ON/OFF (See Note 7)
Logic compatibility Open collector ref to -input
ON Open circuit or <12VDC
OFF <1.2VDC
Undervoltage lockout Power up 32.5V
Power down 30.5V
Start-up time Power up 10ms
(See Note 6) Remote ON/OFF 3ms
SPECIFICATIONS
File Name: EXQ50S.PDF Rev: 01 Nov 2002
TÜV
Data Sheet © Artesyn Technologies
®
2002
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.
2.300±0.020 (58.42±0.5)
2.000 (50.80)
0.140 (3.56)
0.435 (11.05)
0.435
(11.05)
0.150 (3.81)
0.300 (7.62)
0.300 (7.62)
0.300 (7.62)
0.450 (11.43)
0.600 (15.24)
0.150 (3.81)
ø0.062 ±0.002
(ø1.57 ±0.05) 2 Places
ø0.040 ±0.002
(ø1.04 ±0.05) 6 Places
All dimensions in inches (mm)
All tolerances ±0.010in (±0.25mm)
Unless otherwise stated
0.138 (3.50) REF
Vout-
Vin+
Top view
Seating Plane
Remote
on/off
Vin-
Vin-
Remote
on/off
Vin+
Sense-
Trim
Sense+
Vout+
1.450±0.020
(36.83±0.5)
0.400±0.017 (10.18±0.44)
Installed HT
0.017 (0.43)
Min clearance
Bottom view
Vout+
Sense+
Vout-
Trim
Sense-
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E174104
TÜV TÜV Product Service. Certificate No. B 01 11 38572 029
Notes
1di/dt = 0.1A/µs, Vin = 48VDC, Tc = 25°C, load change = 0.5 lo max. to
0.75 lo max. and 0.75 lo max. to 0.5 lo max.
2The EXQ50 meets level A and level B conducted emissions only with
external components connected before the input pins to the converter.
See Application Note 120 for details.
3Recommended input fusing is a 3.15A HRC 200V rated fuse.
4This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
5Measured with no external Pi filter. Significant reduction possible with
external filter.
6Start-up into resistive load.
7Active low remote On/Off is available. Standard product is active high.
When ordering active low parts, designate with the Suffix '-R', e.g
EXQ50-48S3V3-R.
8This parameter is calculated at worst case line, load, temperature and
initial settings.
9This is inclusive of the output trim range. If 6.0% trim-up is used, for
example, then only 4.0% output sense is available.
10 Maximum, not typical, specification.
OUTPUT INPUT OVP OUTPUT OUTPUT OUTPUT EFFICIENCY REGULATION (10) MODEL
POWER VOLTAGE VOLTAGE CURRENT CURRENT (TYP.) LINE LOAD NUMBER (7)
(MAX.) (MIN.) (MAX.)
36W 33-75VDC 2.3VDC 1.8V 0A 20A 86.5% ±0.3% ±0.3% EXQ50-48S1V8
50W 33-75VDC 3.0VDC 2.5V 0A 20A 88.0% ±0.3% ±0.3% EXQ50-48S2V5
50W 33-75VDC 3.9VDC 3.3V 0A 15A 89.0% ±0.3% ±0.3% EXQ50-48S3V3
50W 33-75VDC 6.0VDC 5.0V 0A 10A 90.0% ±0.3% ±0.3% EXQ50-48S05
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
PROTECTION
Short circuit protection (<20mΩshort) Continuous
Overvoltage protection Non-latching clamp
TELECOM SPECIFICATION
Central office interface A ETS300-132-2 input voltage
and current requirements
PIN CONNECTIONS
PIN NUMBER FUNCTION
1+Vin
2 On/Off
3-Vin
4 -Vout
5 -Sense
6 Trim
7 +Sense
8 +Vout
EXQ50 Series
Single output
DC/DC CONVERTERS 36-50W High Efficiency DC/DC Converters 2
Please consult our website for the following items: ✔ Application Note ✔ Longform Data Sheet www.artesyn.com
File Name: EXQ50S.PDF Rev: 01 Nov 2002
