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 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. * * * * 20W Standard Package * Enable and Trim Pins 100C 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 s 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 +100C -40 To +105C 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 25C, normal line, and full load, unless otherwise stated. Soldering Conditions: I/O pins, 260C, 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 ! ! -. ' ' ' ' ' . " ' 0 2 3 4 5 7007) 28 6 ! 70;7) 38 6 ! 724) 90 "= "> 8 < 0" 724) 90 @ "> 0@ 74;) 004 "= "> 74;) 004 @ "> 2" 7<;) 240 "= "> 7<;) 240 @ "> 3" 2@ 3@ "# "$% "$ " "! ! &$ & &! ' '&% "# "$% "$ " "! &$ & &! / /% /' 1# ! 1#% 1# ! * 1# ! * 1 + # : * # : * # : %16 "! "!% &! 16 * '!% '?% 6> # : %16 "! "!% &! 16 * '!% '?% 6> # : %16 "! "!% &! 16 * '!% '?% 6> # : %16 "! "!% &! 16 * '!% '?% 6> # : %16 "! "!% &! 16 * '!% '?% 6> # : %16 "! "!% &! 16 * '!% '?% 6> ''! (!) ' * + ''! (" ) ' * +,, 6 ! 7087) 49 1 ' 6 1 ' 6 1 ' 6 1 ' 6 1 ' 6 1 ' 6 + A "$7;7BC-#'3@ D "$7;7BC-# ! - 7<;) > !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. 3