OBSOLETE PRODUCT
Contact factory for replacement model
Corporate: www.cdtechno.com
WPA50
50 Watt Single
Output Eighth
Brick DC/DC
Converter
The WPA50 Series is a 50 Watt single
output, low-profile DC-DC converter
in an industry standard package of 2.3”
x 0.9” x 0.35” (58.42mm x 22.86mm
x 9.0mm). The WPA50 uses unique
proprietary technologies to deliver
ultra-high efficiencies and excellent
thermal performance. It includes
extensive control and protection features
for maximum flexibility and provides
Output Overcurrent Protection -
Industry Standard Footprint & Size -
Hiccup Mode
2.3” x 0.9” x 0.35”
Input Side “L” Filter
(58.42mm x 22.86mm x
No Minimum Load Required
9.0mm)
No Heatsinks
High Efficiency - Up To 91%
Low Profile and Low Weight
WideInputV
oltageRange:
Thermal Shutdown
36 – 75V
DC
with
Remote On/Off Control
100V100mS Input Voltage Transient
Isolation Voltage of 1500 V
DC
Protection
Soft Start
Output Voltages: 1.2 V, 1.5V, 1.8V,
High Reliability
2.2V, 2.5V, 3.3V & 5.0V
Fixed Frequency Operation
Output Trim Function with Industry
Safety per UL/CUL 60950,
EN
Standard Equations
60950,
Operational Insulation
Remote Output Sense
Meets TNV-SELV
Isolation
Remote ON/OFF (Positive or
Requirements
Negative Logic)
Meets Conducted Emissions Requirements
Output Overvoltage Protection
of FCC Class B and EN55022 Class B
a versatile solution for a whole range
of applications with its input voltage
range of 36-75 V
DC
and output voltages
between 1.2V
DC
and 5.0V
DC
.
The power dissipation of the WPA50
series is so low that a heat sink is not
required. The product features fast
dynamic response characteristics and
low output ripple critical for low voltage
applications. WPA DC-DC converter
modules are certified to UL/CUL 60950,
and VDE to EN60950. It meets CISPR22/
EN55022/FCC15J Class B specs for EMI
levels with external filtering.
This high quality and highly reliable
product is competitively priced and an
ideal solution for distributed power,
telecoms and datacom applications.
PRODUCT SELECTION CHART
NOMINAL
INPUT
VOLTAGE
MODEL
WPA50R48S012
WPA50R48S015
WPA50R48S018
WPA50R48S022
WPA50R48S025
WPA50R48S033
WPA50R48S050
(V
DC
)
48
48
48
48
48
48
48
RATED
OUTPUT
VOLTAGE
(V
DC
)
1.2
1.5
1.8
2.2
2.5
3.3
5.0
OUTPUT CURRENT
MIN
LOAD(A)
0.0
0.0
0.0
0.0
0.0
0.0
0.0
RATED
OUTPUT (A)
18
18
18
18
18
15
10
INPUT
CURRENT
RATED LOAD (A)
0.65
0.72
0.82
0.99
1.11
1.20
1.18
EFFICIENCY
(%)
MIN
71
79
83
84
85
89
90
ABSOLUTE MAXIMUM RATINGS
Output Short-Circuit Duration
Internal Power Dissipation
Lead Temperature (soldering, 10 seconds max)
Continuous Input Voltage
Storage Temperature
Input to Output Isolation
Continuous
As low as 5 Watts
+300°C
75 VDC
+125°C
1500 V
DC
SPECIFICATIONS, ALL MODELS
Specifications are at T
A
= +25°C, Airflow = 300LFM (1.5m/s) at nominal input voltage unless otherwise specified.
PARAMETER
INPUT
Voltage Range
Reflected Ripple Current
Transient Withstand (Susceptibility)
Inrush Charge
Maximum Input Current
1.2 Vout
1.5 Vout
1.8 Vout
2.2 Vout
2.5 Vout
3.3 Vout
5.0 Vout
INPUT CONTROL
Temperature Shutdown
Temperature Hysteresis
Quiescent Standby Current
Power Dissipation
Undervoltage Shutdown
Undervoltage Hysteresis
ISOLATION
Input/Output Isolation Voltage
Resistance
Capacitance
Leakage Current
OUTPUT
Rated Power
CONDITIONS
Vin = 48V, Io=I Rated
Vin = 48V, Io=I Rated
100ms
Vin=36V
MIN
36
TYP
48
420
42
0.75
0.925
1.10
1.31
1.5
1.6
1.55
MAX
75
550
100
UNITS
V
DC
mApk-pk
V
mC
A
A
A
A
A
A
A
INPUT
Vin = 48V
No Load, Remote On/Off
Disabled, Vin = 48Vdc
31.50
0.50
3
115
5
4
300
35.0
3.00
°C
°C
mA
mW
V
V
32.5
2
240 Vrms, 50Hz
WPA50R48S012
WPA50R48S015
WPA50R48S018
WPA50R48S022
WPA50R48S025
WPA50R48S033
WPA50R48S050
WPA50R48S012
WPA50R48S015
WPA50R48S018
WPA50R48S022
WPA50R48S025
WPA50R48S033
WPA50R48S050
1.08
1.35
1.62
1.98
2.25
3.00
4.50
1500
10
1.5
100
22
27
33
40
45
50
50
1.0
2250
V
DC
M
W
nF
mA
W
W
W
W
W
W
W
% of V
NOM
V
V
V
V
V
V
V
%/°C
%
%
mVp-p
Voltage Setpoint Accuracy
Output Voltage Trim Range
OUTPUT
Temperature Coefficient
Output Voltage Regulation
Line Regulation
Load Regulation
Ripple & Noise (NOTE 1)
Transient Response
1.2 Vout
5.0 Vout
Turn-On Time
Remote Sense Compensation
Overcurrent Protection
GENERAL
Switching Frequency
MTTF per ML-HDBK-217
Ground Benign
±0.002
Vin = 36V - 75V, Iout = Max
Vin = 48V, Iout = 0-Max
Vin = 48V, < 20Mhz bandwidth
Step change in output current
(50%-100% Step @ 1A/mS)
Vin = 48V
Vin = 48V
Vin = 48V
Vin = 48V
105
380
Circuit Stress Method
TA = +25°
400
TBD
0.1
0.1
1.5
1.32
1.65
1.98
2.42
2.75
3.63
5.50
±0.005
0.2
0.2
75
100
100
200
500
10
140
420
mV
mV
mS
%
%
KHz
Hrs
NOTE 1:
Measured at 20 MHz bandwidth across a
6mf
multi layer ceramic capacitor located approximately 1” from output terminals.
WPA50
REV A1
6/2003
2
PERFORMANCE CURVES: MODEL WPA50R48033
MODEL WPA50R48033
Efficiency vs. Output Current
@ T
A
+25
0
C; Vin = 48Vdc
Efficiency (%)
Output Current (A)
Efficiency vs. Input Voltage
@ T
A
+25
0
C; IO = 15A
Efficiency (%)
Input Voltage (Vdc)
Turn On Time (V
IN
to V
OUT
)
V
OUT
Turn Off Time (V
IN
to V
OUT
)
184mS
V
OUT
V
IN
91mS
V
IN
Time Scale = 50mS/DIV
WPA50
REV A1
6/2003
Time Scale = 50mS/DIV
3
PERFORMANCE CURVES: MODEL WPA50R48033
MODEL WPA50R48033
Primary On Time (Primary Remote to V
OUT)
Primary Off Time (Primary Remote to V
OUT)
V
OUT
V
OUT
2.3mS
On/Off
98mS
On/Off
Time Scale = 1mS/DIV
Time Scale = 100mS/DIV
Transient Response, 50% to 100% Load Step
Transient Response, 100% to 50% Load Step
I
OUT
I
OUT
V
OUT
158mV
190mV
V
OUT
Voltage Scale = 100mV/DIV; Time Scale = 100mS/DIV
Settling Time = 330mS; Rate Change in I
OUT
= 0.18A/mS;
Voltage Transient = 158mV
Voltage Scale = 100mV/DIV; Time Scale = 200mS/DIV
Settling Time = 556ms; Rate Change in I
OUT
= 0.19A/mS
Voltage Transient = 190mV
WPA50
REV A1
6/2003
4
MECHANICAL
PIN FUNCTIONS
1
2
3
4
5
6
7
8
NOTES:
Pin placement tolerance: +.010
Pin material: Brass
Pin Finish: Tin/Lead over Nickel
Converter weight: [16g]
+Vin
Remote On/Off
-Vin
-Vout
- Sense
Trim
+ Sense
+Vout
ORDERING INFORMATION
To Find Model Number
WPA5048S
y
-
Device Family
50 Watt, Single Output,
Eighth Brick, 48VDC Input Range
Model Number
Selected from Product Selection Chart (above)
y = 012 = 1.2V, 015 = 1.5V, 018 = 1.8V, 022 = 2.2V,
025 = 2.5V, 033 = 3.3V, 050 - 5.0V,
Remote On/Off Logic
No Number = Positive Logic
1 = Negative Logic
Model Numbers
WPA50R48S012
WPA50R48S015
WPA50R48S018
WPA50R48S022
WPA50R48S025
WPA50R48S033
WPA50R48S050
WPA50R48S012-1
WPA50R48S015-1
WPA50R48S018-1
WPA50R48S022-1
WPA50R48S025-1
WPA50R48S033-1
WPA50R48S050-1
Part Numbers
6064958
6064959
6064960
6064961
6064962
6064963
6064964
6064967
6064968
6064969
6064970
6064971
6064972
6064973
USA:
Canada:
UK:
Mansfield (MA), Tel: (508) 339 3000, email: sales@murata-ps.com
Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com
Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com
Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com
Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 & ISO 14001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2009 Murata Power Solutions, Inc.
France:
Japan:
China:
Germany:
München, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com
Singapore:
Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
WPA50
REV A1
6/2003
5
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