TECHNICAL SPECIFICATIONS
• 20W Standard Package
• 100°C 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 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.
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 +100°C
Storage Range -40 To +105°C
Humidity Max., Non-Condensing 95%
Vibration, 3 Axes, 5 Min Each 5 g, 10 - 55 Hz
MTBF†(Bellcore TR-NWT-000332) 1.9 x 106hrs
Safety UL, cUL, TUV
Weight (approx.) 1.2 oz
General
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.
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 Vin Min. - Vin Max., Iout Rated 0.2% Vout
Load Regulation Iout Min. - Iout Max., Vin Nom. 0.5% Vout
Minimum Output Current 5 %
Dynamic Regulation, Loadstep 25% Iout
Pk Deviation 4% Vout
Settling Time 500 µ
s
Voltage Trim Range ±10%
Short Circuit / Overcurrent Protection Shutdown / Hiccup
Current Limit Threshold Range, % of Iout Rated 110 - 140%
Output
MWS SERIES - 20 WATT
REV. 09/01