1
MWS020ZGY
50
55
60
65
70
75
80
85
90
10
20
30
40
50
60
70
80
90
100
LOAD %
EFFICIENCY %
EFF. (33v)
EFF. (48v)
EFF. (75v)
MWS020YGY
60
65
70
75
80
85
10
20
30
40
50
60
70
80
90
100
LOAD %
EFFICIENCY %
EFF. (18v)
EFF. (24v)
EFF. (36v)
TECHNICAL SPECIFICATIONS
20W Standard Package
100C Case Operation
3.3V Output Available
Integrated Heatsink
Enable and Trim Pins
Wide Range Input
Voltage
1500V Isolation
Short Circuit Protection
DESCRIPTION
FEATURES
Efficiency vs. Load (48V Input)
Efficiency vs. Load (24V Input)
MWS DC/DC converters provide up to 20 watts of output
power in an industry-standard package and footprint. The
MWS is available in either 24V or 48V input versions.
With a maximum case temperature of 100C, the MWS is
well suited for the most demanding telecom, networking,
and industrial applications. The MWS features 1500 VDC
isolation, short circuit, and overtemperature protection.
Turn-On Time, Max.
175 ms Max.
Remote Shutdown
Positive Logic
Switching Frequency
450 kHz
Isolation
Input - Output
1500 VDC
Temperature Coefficient
0.015%/C
Case Temperature
Operating Range
-40 To +100C
Storage Range
-40 To +105C
Humidity Max., Non-Condensing
95%
Vibration, 3 Axes, 5 Min Each
5 g, 10 - 55 Hz
MTBF (Bellcore TR-NWT-000332)
1.9 x 106 hrs
Safety
UL, cUL, TUV
Weight (approx.)
1.2 oz
General
Notes
MTBF predictions may vary slightly from model to model.
Specifications typically at 25C, normal line, and full load, unless
otherwise stated.
Soldering Conditions: I/O pins, 260C, ten seconds; fully compatible
with commercial wave-soldering equipment.
Voltage Range
24 VDC Nominal
18 - 36 VDC
48 VDC Nominal
33 - 75 VDC
Input Undervoltage Lockout
<33V or <18V
UVLO Hysteresis
1V Nominal
Reflected Ripple
50 mA
Input Reverse Voltage Protection
Shunt Diode
Input
Setpoint Accuracy
1.0%
Line regulation V
in
Min. - V
in
Max., I
out
Rated
0.2% V
out
Load Regulation I
out
Min. - I
out
Max., V
in
Nom.
0.5% V
out
Minimum Output Current
5 %
Dynamic Regulation, Loadstep
25% I
out
Pk Deviation
4% V
out
Settling Time
500
s
Voltage Trim Range
10%
Short Circuit / Overcurrent Protection
Shutdown / Hiccup
Current Limit Threshold Range, % of I
out
Rated
110 - 140%
Output
MWS SERIES - 20 WATT
REV. 09/01
3
When ordering equipment options, use the following suffix information. Select the option(s) that you prefer and add
them to the model number. Example ordering options are located below the options table.
OPTION
SUFFIX
APPLICABLE SERIES
REMARKS
Negative Logic
N
HAS, HBD, HBS, HES, HLS, LES,
QBS, QES, QLS, TES, TQD
TTL Low Turns Module ON
TTL High Turns Module OFF
Lucent-Compatible Trim
T
HAS, HBD, HBS, HES, HLS, QBS,
QES, QLS
Terminal Strip
TS
XWS, XWD, XWT
Trim
1
IAS, LES
Enable
2
IAD, IAS, LES, SMS
Trim and Enable
3
IAS, LES
Current Share
4
SMS
Headerless
Y
Encapsulated EWS, IWS, OWS
PIN LENGTH AND HEATSINK
OPTIONS
Standard Pin Length is 0.180
(4.6mm)
0.110 (2.8mm) Pin Length
8
All Units (Except SMS)
0.150 (3.8mm) Pin Length
9
All Units (Except SMS)
0.24 (6.1mm) Horizontal Heatsink
1H
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM, TLD, and TKD Packages)
Includes Thermal Pad
0.24 (6.1mm) Vertical Heatsink
1V
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM, TLD, and TKD Packages)
Includes Thermal Pad
0.45 (11.4mm) Horizontal
Heatsink
2H
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM, TLD, and TKD Packages)
Includes Thermal Pad
0.45 (11.4mm) Vertical Heatsink
2V
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM, TLD, and TKD Packages)
Includes Thermal Pad
0.95 (24.1mm) Horizontal
Heatsink
3H
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM, TLD, and TKD Packages)
Includes Thermal Pad
0.95 (24.1mm) Vertical Heatsink
3V
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM, TLD, and TKD Packages)
Includes Thermal Pad
Example Options:
HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent-compatible trim, and 0.95 vertical heatsink.
LES015YJ-3N = LES015YJ with optional trim and enable, negative logic.
QBS066ZG-AT8 = QBS066ZG-A with Lucent compatible trim and 0.110 pin length.
NUCLEAR AND MEDICAL APPLICATIONS Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc.
TECHNICAL REVISIONS The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
OPTIONS
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