DC/DC CONVERTERS 36-50W High Efficiency DC/DC Converters 1
2 YEAR WARRANTY
SXQ50 Series
Single output
•Surface mount quarter-brick format
•High efficiency topology, 90% at 5V and
86.5% typical at 1.8V
•Low profile, open-frame package
•Wide operating temperature, -40°C to +90°C (with derating)
•90% to 110% output trim
•No minimum load
•Remote on/off
The SXQ50 series are surface mount high-efficiency, isolated DC/DC converters in a
standard quarter-brick format and a height of just 0.4 inches. The converters provide up to
50 Watts of output power and are capable of delivering very high current at low voltages.
Patent pending technology ensures unprecedented levels of performance from a 50W
surface-mount DC/DC converter. 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 SXQ50 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, SXQ50 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 band (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 turn-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: SXQ50S.PDF Rev: 09 Oct 2002
TÜV
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
All dimensions in inches (mm)
All tolerance ±0.010in (±0.25mm)
unless otherwise stated
2.300±0.010 (58.42±0.25
0.055 (1.40)
0.055
(1.40)
0.017 (0.43)
Min Clearance
0.400±0.017
(10.16±0.44)
Installed HT
1.460±0.010
(37.08±0.25)
Trim
+Sense
-Sense
Remote
On/Off
+Vout
+Vin
-Vin
Remote
On/Off
-Vin
+Vin
-Vout
Trim
-Sense
+Sense
-Vout
+Vout
Top V i e w
Side View
Bottom View
Seating Plane
0.057 (1.45) 2.186 (55.52)
Connector,
0.053 x 0.102
(1.34x 2.59) 8 Places
0.450 (11.43)
0.150 (3.81)
0.435
(11.05)
0.435
(11.05)
0.300 (7.62)
0.300 (7.62)
0.600 (15.24)
0.600
(15.24)
Top View
1.025 (26.04)
0.875 (22.23)
0.725 (18.42)
0.575 (14.61)
0.425 (10.80)
0.000 (0.00)
1.460 (37.08)
1.025 (26.04)
3.0 mm x 1.7 mm
8 Places
Converter Outline
0.725 (18.42)
0.425 (10.80)
0.000 (0.00)
0.000 (0.00)
0.057 (1.45)
2.243 (56.97)
2.300 (58.42)
Recommended Land Pattern
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.
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
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 SXQ50 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
SXQ50-48S3V3-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.
11 To order an Evaluation Kit which contains a SXQ50 model pre-mounted
on a circuit card with test points for easy testing in the laboratory, please
add the suffix ‘-EVAL’ to the model number, e.g. SXQ50-48S05-EVAL.
Please see the SXQ50 Evaluation Board User Guide for further details.
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
PROTECTION
Short circuit protection (<20mΩ short) 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
2On/Off
3-Vin
4-Vout
5-Sense
6Trim
7+Sense
8+Vout
SXQ50 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: SXQ50S.PDF Rev: 09 Oct 2002
OUTPUT
INPUT OVP OUTPUT
OUTPUT OUTPUT
EFFICIENCY REGULATION (10) MODEL
POWER
VOLTAGE VOLTAGE
CURRENT CURRENT
(TYP.) LINE LOAD NUMBER (7, 11)
(MAX.) (MIN.) (MAX.)
36W 33-75VDC 2.3VDC 1.8V 0A 20A 86.5% ±0.3% ±0.3% SXQ50-48S1V8
50W 33-75VDC 3.0VDC 2.5V 0A 20A 88.0% ±0.3% ±0.3% SXQ50-48S2V5
50W 33-75VDC 3.9VDC 3.3V 0A 15A 89.0% ±0.3% ±0.3% SXQ50-48S3V3
50W 33-75VDC 6.0VDC 5.0V 0A 10A 90.0% ±0.3% ±0.3% SXQ50-48S05
