WPN20R
20 Watt Regulated DC/DC Converter
0
R
egu
u
OBSOLETE PRODUCT
PRO
DUCT
OV
PRODUCT OVERVIEW
O
V
Contact Factory
ERVIEW
for Replacement Model
The WPN20R series is a family of high performance DC/DC converters available in three
WPN2
0R
2
y
pe
rformance
DC/D
e
e
D
inpu
t
voltage ranges of 9-18V, 18-36V and 33-75V. The unit is housed in a space saving
input
u
r
anges
18-3
6V
3
33
-75V.
3
aluminum shell and combines low cost with high performance across all line and load conditions.
The 300kHz switching frequency and forward converter topology provide excellent performance
across all line and load conditions in a space saving package. Other features include: full
regulation down to zero load, under voltage lock-out, internal temperature shutdown, soft start,
remote on/off and over current protection.
An output trim feature is provided, allowing the user to compensate for long line lengths.
The WPN20R Series is assembled using a fully automated process incorporating 100% surface
mounted components for increased reliability.
Applications include: Telecom-munications, Battery Powered Systems, Process Control
Equipment, Transportation Equipment and Distributed Power Systems.
FEATURES
Operating Temperature Range: -40°C to +115°C
Industry Standard Pinout
Input and Output Filtering
Low Profile Shell
Single and Dual Outputs
High Efficiency
Remote On/Off Function
Output Trim Function
Zero Load Operation
EN 60950, UL1950, C-UL, VDE Agency Approvals
PRODUCT SELECTION CHART
Specifications are at T
A
= +25°C nominal input voltage, rated output current unless otherwise specified.
NOMINAL
INPUT
VOLTAGE (VDC)
12
12
12
12
12
12
12
24
24
24
24
24
24
24
48
48
48
48
48
48
48
RATED
OUTPUT
VOLTAGE (VDC)
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
OUTPUT CURRENT (A)
MIN
NOM
LOAD
LOAD
0.0
6.00
0.0
4.00
0.0
1.66
0.0
1.33
0.0
±2.00
0.0
±0.83
0.0
±0.67
0.0
6.00
0.0
4.00
0.0
1.66
0.0
1.33
0.0
±2.00
0.0
±0.83
0.0
±0.67
0.0
6.00
0.0
4.00
0.0
1.66
0.0
1.33
0.0
±2.00
0.0
±0.83
0.0
±0.67
INPUT
CURRENT
NOM LOAD
2.00
2.00
2.00
2.00
2.00
2.00
2.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.50
0.50
0.50
0.50
0.50
0.50
0.50
EFFICIENCY
(%)
82
84
86
86
84
86
86
83
84
87
87
85
87
87
83
85
88
86
85
87
87
MODEL*
WPN20R12S03
WPN20R12S05
WPN20R12S12
WPN20R12S15
WPN20R12D05
WPN20R12D12
WPN20R12D15
WPN20R24S03
WPN20R24S05
WPN20R24S12
WPN20R24S15
WPN20R24D05
WPN20R24D12
WPN20R24D15
WPN20R48S03
WPN20R48S05
WPN20R48S12
WPN20R48S15
WPN20R48D05
WPN20R48D12
WPN20R48D15
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Technical enquiries
-
email:
mk@murata-ps.com,
tel:
+44 (0)1908 615232
WPN20R.B01 Page 1 of 5
WPN20R
20 Watt Regulated DC/DC Converter
SPECIFICATIONS, ALL MODELS
Specifications are at T
A
= +25°C nominal input voltage, rated output current unless otherwise specified.
PARAMETER
INPUT
Voltage Range
CONDITIONS
MIN
9
18
33
TYP
12
24
48
MAX
18
36
75
50
115
UNITS
V
DC
V
DC
V
DC
mApk-pk
°C
°C
mA
Reflected Ripple Current
All Input Ranges
INPUT CONTROL
Temperature Shutdown
Case
Temperature Hysteresis
Quiescent Standby Current
Current Into + V
IN
Undervoltage Control
See Attached Plots
OUTPUT
ISOLATION
Rated Voltage
Test Voltage
60Hz, 10 Seconds
Resistance
Capacitance
Leakage Current
Rated Power
Voltage Setpoint Accuracy
Temperature Coefficient
Line Regulation
Singles
High Line to Low Line
Duals
High Line to Low Line
Load Regulation
Singles
Mn Load to Nom. Load
Duals
Mn Load to Nom. Load
Ripple & Noise
Single Outputs
BW = 5Hz to 20MHz
Dual Outputs
BW = 5Hz to 20MHz
Output Adjust Range
See Attached Plots
Short Circuit and Overcurrent Protection
Continuous
Max Capacitive Load
GENERAL
Switching Frequency
MTTF per ML-HDBK-217
Circuit Stress Method
Ground Benign
T
a
= +25° Unmodified Database
Package Weight
Moisture Sensitivity Level (MSL)
as per IPC/JEDEC J-STD-20
TEMPERATURE
Specification
Case
Operation
Case
Storage
105
10
8
OUTPUT
10
1500
1500
10
400
30
20
±1.5
±0.005
±0.1
±0.5
±0.5
±2.0
60
50
100
100
V
DC
V
DC
GΩ
pF
mArms
W
%
%/°C
%
%
%
%
mVp-p
mVp-p
GENERAL
550
300
1,400,000
32
2
-40
-40
-55
+ 85
+ 85
+125
μF/A
kHz
Hr
g
°C
°C
°C
REMOTE ON/OFF CONTROL
Logic Compatibility ..............................................Open Collector TTL
EC On ............................................................................ Open Circuit
EC Off .......................................................................................< 0.7V
Shutdown Idle Current .................................................................8mA
ORDERING INFORMATION
WPN20R XXYZZ
Device Family
20W Regulated DC/DC Unit
Model Number
xx = Input Range, e.g. 48V
y = Number of Outputs (S=single; D=dual)
zz = Output Voltage, e.g. ‘05’ for 5V
www.murata-ps.com
Technical enquiries
-
email:
mk@murata-ps.com,
tel:
+44 (0)1908 615232
WPN20R.B01 Page 2 of 5
WPN20R
20 Watt Regulated DC/DC Converter
MECHANICAL
PIN SIDE DOWN
SIDE VIEW
0.425 + 0.00
(10.80 + 0.08)
0.150
0.040 + 0.002
(1.02 + 0.05)
(3.81)
(40.39 + 0.13)
1.590 + 0.005
WPN20Rxxyzz
0.015 + 0.003
(0.38 + 0.08)
PIN CONNECTIONS
Number
1
2
3
4
5
6
7
8
Pin Function
Singles
Duals
+VIN
+VIN
-VIN
-VIN
NO PIN
NO PIN
Remote On/Off
Remote On/Off
NO PIN
+VOUT
+VOUT
COMMON
-VOUT
-VOUT
TRIM
TRIM
5
1.990 + 0.005
(50.55 + 0.13)
1
2
7
3
4
8
6
PIN SIDE UP
NOTES:
All dimensions are in inches (millimeters).
GRID: 0.100 inches (2.54 millimeters)
Pin Placement: Tolerance: ±0.015
Marked with: specific model ordered, date code,
job code.
MATERIAL: Units are encapsulated in a low
thermal resistance molding compound which
has excellent chemical resistance, wide operat-
ing temperature range, and good electrical
properties under high humidity environments.
The encapsulant and outer shell of the unit have
UL94V-0 ratings. Lead material is phosphor
bronze; lead finish is matte Sn (100-300 micro-
inches) over Ni (5-40 microinches).
SIMPLIFIED CIRCUIT DIAGRAM
THERMAL DERATING CURVE
HYSTERESIS GRAPH
HYSTERESIS GRAPH
Undervoltage Lockout Threshold Voltages
Nominal Input
Voltage Range
12
24
48
Shutdown Low
Voltage (V1)
OFF
7
15.5
30
Shutdown High
Voltage (V2)
ON
8.8
17
33
Specifications typical at TA=25°C, rated output current.
www.murata-ps.com
Technical enquiries
-
email:
mk@murata-ps.com,
tel:
+44 (0)1908 615232
WPN20R.B01 Page 3 of 5
WPN20R
20 Watt Regulated DC/DC Converter
PERFORMANCE GRAPHS
90
85
80
EFFICIENCY VS. OUTPUT LOAD
10
15V
12V
5V
3V
10
EFFICIENCY VS. TEMPERATURE
Change in Efficiency (%)
5
5
0
0
-5
-5
-10
-15
25
65
100% Load
20% Load
Efficiency (%)
75
70
65
60
55
50
10
100
20
40
50
60
80
Output Load (% or Rated)
50%Load
-10
-40
110
Tcase (C)
0.6
EFFICIENCY VS. INPUT VOLTAGE
10%Load
100%Load
OUTPUT RIPPLE VS. INPUT VOLTAGE
1.4
Change in Efficiency (%)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
LL
Nom
HL
Normalized Output Ripple
Vin
1.2
1
0.8
0.6
0.4
LL
Nom
Vin
HL
50
45
TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE
5 5
3 -trim +trim
1.2
OUTPUT RIPPLE VS. TEMPERATURE
Normalized Output Ripple
40
Trim Resistor (K Ohms)
35
30
25
20
15
10
5
0
10
9
8
7
6
5
4
3
2
1
1
0.8
0.6
-40
-15
25
65
110
Percentage Change In Output Voltage
Tcase (C)
TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE
100
90
80
Trim Resistor (K Ohms)
70
60
50
40
30
20
10
0
10
9
8
7
6
5
4
3
12 15 15
+trim -trim trim
THROUGH-HOLE SOLDERING INFORMATION
These devices are intended for wave soldering or manual soldering.
They are not intended to be subject to surface mount processes
under any circumstances.
The normal wave soldering process can be used with these devices
where the device is subjected to a maximum wave temperature of
260°C for a period of no more than 10 seconds. Within this time and
temperature range, internal temperatures within the converter will not
exceed 175°C. Care should be taken to control manual soldering limits
identical to that of wave soldering.
2
1
Percentage Change In Output Voltage
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Technical enquiries
-
email:
mk@murata-ps.com,
tel:
+44 (0)1908 615232
WPN20R.B01 Page 4 of 5
WPN20R
20 Watt Regulated DC/DC Converter
USA:
UK:
France:
Japan:
Tucson (Az), Tel: (800) 547 2537, email: sales@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
Website: www.murata-ps.jp
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Canada:
Toronto, Tel: (866) 740 1232, email: toronto@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 REGISTERED
03/06/08
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.
© 2008 Murata Power Solutions, Inc.
Germany:
München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com
China:
www.murata-ps.com
Technical enquiries
-
email:
mk@murata-ps.com,
tel:
+44 (0)1908 615232
WPN20R.B01 Page 5 of 5
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