MWS SERIES - 20 WATT
DESCRIPTION
FEATURES
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 100°C, 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.
•
•
•
•
20W Standard Package • Enable and Trim Pins
100°C Case Operation • Wide Range Input
Voltage
3.3V Output Available
• 1500V Isolation
Integrated Heatsink
• Short Circuit Protection
Efficiency vs. Load (24V Input)
85
TECHNICAL SPECIFICATIONS
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Input Undervoltage Lockout
UVLO Hysteresis
Reflected Ripple
Input Reverse Voltage Protection
80
EFFICIENCY %
18 - 36 VDC
33 - 75 VDC
<33V or <18V
1V Nominal
50 mA
Shunt Diode
75
MWS020YGY
EFF. (18v)
70
EFF. (24v)
EFF. (36v)
65
Output
60
Setpoint Accuracy
Line regulation Vin Min. - Vin Max., Iout Rated
±1.0%
0.2% Vout
Load Regulation Iout Min. - Iout Max., Vin Nom.
0.5% Vout
Minimum Output Current
Dynamic Regulation, Loadstep
10
20
60
70
80
90
100
90
500 µs
±10%
Shutdown / Hiccup
110 - 140%
EFFICIENCY %
85
General
Turn-On Time, Max.
Remote Shutdown
Switching Frequency
Isolation
Input - Output
Temperature Coefficient
Case Temperature
Operating Range
Storage Range
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
MTBF† (Bellcore TR-NWT-000332)
Safety
Weight (approx.)
50
Efficiency vs. Load (48V Input)
4% Vout
Settling Time
Voltage Trim Range
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, % of Iout Rated
40
LOAD %
5%
25% Iout
Pk Deviation
30
80
75
MWS020ZGY
70
EFF. (33v)
65
EFF. (48v)
60
175 ms Max.
Positive Logic
450 kHz
EFF. (75v)
55
50
10
20
30
40
50
60
70
80
90
100
LOAD %
1500 VDC
0.015%/°C
-40 To +100°C
-40 To +105°C
95%
5 g, 10 - 55 Hz
1.9 x 106 hrs
UL, cUL, TUV
1.2 oz
Notes
† MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible
with commercial wave-soldering equipment.
REV. 09/01
1
MWS SERIES - 20 WATT
MODELS - (See the last page of Section for options.)
MODEL
INPUT VOLTAGE
(VOLTS)
INPUT VOLTAGE
RANGE (VOLTS)
MAXIMUM INPUT
CURRENT (AMPS)*
OUTPUT
VOLTAGE (VOLTS)
RATED OUTPUT
CURRENT (AMPS)
48
48
24
33 - 75
33 - 75
18 - 36
0.77
0.73
1.34
5
12
15
4
1.66
1.33
MWS020ZGY
MWS020ZHY
MWS020YJY
NOTES:
RIPPLE & NOISE
pk-pk (mV)
TYPICAL
EFFICIENCY**
75
120
150
81%
85%
85%
* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.
MECHANICAL DRAWING
Thermal Impedance
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
11.5 °C/W
10.2 °C/W
8.5 °C/W
6.5 °C/W
5.4 °C/W
Note:
Thermal impedance data is dependent on many
environmental factors. The exact thermal performance should be validated for specific application.
Pin
Function
1
+ Vin
2
- Vin
3
4
5
6
No Pin
Shutdown
No Pin
+ Vout
7
- Vout
8
Trim
2
Tolerances
Inches:
.XX ± 0.020
.XXX ± 0.010
(Millimeters)
.X ± 0.5
.XX ± 0.25
Pin:
± 0.002
± 0.05
Case:
+ 0.04, - 0.00
+ 1.0, - 0.00
(Dimensions as listed unless otherwise
specified.)
OPTIONS
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!70;5E-3 D !70;5E &$799BC-#'8 D &$799BC-# ! 7007) 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.
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