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20 Watts

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 1 of 9

FEATURES

  • Ultra-Wide Input Range
  • Railway Certified
  • No Min. Load Requirement
  • Remote On/Off
  • RoHS & REACH Compliant
  • High Efficiency
  • Over Current, Over Voltage, and Short Circuit Protection
  • 2 Pin Specifications Available
  • Heatsink Available
  • UL/cUL/IEC/EN 62368-1 (60905-1) Safety Approvals & CE Marking

DESCRIPTION

The MRW20 series of DC/DC converters offers up to 20 watts of output power in an ultra-compact 2” x 1” x 0.43” industry standard package. This series consists of single and dual output models with ultra-wide input range, high efficiency, and no minimum load requirements. Each model in this series is RoHS & REACH compliant, has over current, over voltage, and short circuit protection, and has two pin specifications available as well as optional heatsink. This series has UL/cUL/IEC/EN62368-1 (60950-1) safety approvals and CE marking. Standard Size: 2in x 1in x 0.43in (50.8mm x 25.4mm x 11mm) MODEL SELECTION TABLE Single Output Models Model Number(1) Input Voltage Range Output Voltage Output Current Input Current Ripple & Noise Maximum Capacitive Load Efficiency Over Voltage Protection Output Power No Load Max Load MRW20-24S05 24VDC (9~36VDC) 5VDC 4000mA 25mA 958mA 50mVp-p 6800µF 87% 6.2VDC 20W MRW20-24S12 12VDC 1670mA 960mA 100mVp-p 1200µF 87% 15VDC MRW20-24S15 15VDC 1330mA 955mA 100mVp-p 750µF 87% 18VDC MRW20-24S24 24VDC 833mA 957mA 150mVp-p 300µF 87% 30VDC MRW20-48S05 48VDC (18~75VDC) 5VDC 4000mA 15mA 479mA 50mVp-p 6800µF 87% 6.2VDC 20W MRW20-48S12 12VDC 1670mA 474mA 100mVp-p 1200µF 88% 15VDC MRW20-48S15 15VDC 1330mA 472mA 100mVp-p 750µF 88% 18VDC MRW20-48S24 24VDC 833mA 473mA 150mVp-p 300µF 88% 30VDC MRW20-110S05 110VDC (40~160VDC) 5VDC 4000mA 10mA 216mA 50mVp-p 6800µF 84% 6.2VDC 20W MRW20-110S12 12VDC 1670mA 212mA 100mVp-p 1200µF 86% 15VDC MRW20-110S15 15VDC 1330mA 211mA 100mVp-p 750µF 86% 18VDC MRW20-110S24 24VDC 833mA 211mA 150mVp-p 300µF 86% 30VDC MODEL SELECTION TABLE Dual Output Models Model Number(1) Input Voltage Range Output Voltage Output Current Input Current Ripple & Noise Maximum Capacitive Load(2) Efficiency Over Voltage Protection Output Power No Load Max Load MRW20-24D12 24VDC (9~36VDC) ±12VDC ±833mA 25mA 969mA 100mVp-p 600#µF 86% ±15VDC 20W MRW20-24D15 ±15VDC ±667mA 969mA 100mVp-p 380#µF 86% ±18VDC MRW20-48D12 48VDC (18~75VDC ±12VDC ±833mA 15mA 479mA 100mVp-p 600#µF 87% ±15VDC 20W MRW20-48D15 ±15VDC ±667mA 479mA 100mVp-p 380#µF 87% ±18VDC MRW20-110D12 110VDC (40~160VDC) ±12VDC ±833mA 10mA 211mA 100mVp-p 600#µF 86% ±15VDC 20W MRW20-110D15 ±15VDC ±667mA 212mA 100mVp-p 380#µF 86% ±18VDC

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 2 of 9 SPECIFICATIONS All specifications are based on 25°C, Nominal Input Voltage, Resistive Load, and Rated Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION TEST CONDITIONS Min Typ Max Unit INPUT SPECIFICATIONS Input Voltage Range 24V Input Models 9 24 36 VDC 48V Input Models 18 48 75 110V Input Models 40 110 160 Start-Up Threshold Voltage 24V Input Models 9 VDC 48V Input Models 18 110V Input Models 40 Under Voltage Shutdown 24V Input Models 7.5 VDC 48V Input Models 16 110V Input Models 37 Input Surge Voltage (100ms. Max.) 24V Input Models -0.7 50 VDC 48V Input Models -0.7 100 110V Input Models -0.7 170 Input Filter All Models Internal Pi Type OUTPUT SPECIFICATIONS Output Voltage See Table Voltage Accuracy ±1.0 %Vnom. Line Regulation Vin=Min to Max @Full Load ±0.2 % Load Regulation Io=0% to 100% Single Output ±0.5 % Dual Output ±1.0 Voltage Balance Dual Outputs, Balanced Loads ±2.0 % Output Power See Table Output Current See Table Minimum Load No Minimum Load Requirement Maximum Capacitive Load See Table Ripple & Noise (20MHz BW) 5V Model Measured with a 10µF/25V MLCC 50 mVp-p 12V, 15V, ±12V, ±15V Models 100 24V Model Measured with a 4.7µF/50V MLCC 150 Transient Recovery Time(3) 25% Load Step Change 300 µsec Transient Response Deviation 25% Load Step Change ±3 ±5 % Trim Up/Down Range % of Nominal Output Voltage ±10 % Start-Up Time All Models 50 mS Temperature Coefficient ±0.02 %/ºC REMOTE ON/OFF CONTROL Converter On 3.5V~12V or Open Circuit Converter Off 0V~1.2V or Short Circuit Control Input Current (On) Vctrl=5.0V 0.5 mA Control Input Current (Off) Vctrl=0V -0.5 mA Control Common Referenced to Negative Input Standby Input Current Nominal Vin 2.5 mA PROTECTION Short Circuit Protection Automatic Recovery Hiccup Mode 0.7Hz typ. Over Load Protection Hiccup 150 % Over Voltage Protection See Table GENERAL SPECIFICATIONS Typ. Efficiency @Max Load. See Table Switching Frequency 320 KHz Isolation Voltage Rated for 60 Seconds I/O, Reinforced Isolation 3000 VACrns Input/Output to Case 1500 Isolation Resistance 500VDC 1000 MΩ Isolation Capacitance 100KHzm 1V 1500 pF PHYSICAL SPECIFICATIONS Weight 1.43oz (40.5g) Dimensions (L x W x H) Standard Case, “A” Pinning (-A Suffix) 2in x 1in x 0.43in (50.8mm x 25.4mm x 11mm) Heatsink (-H Suffix) 2in x 1.22in x 0.71in (50.8mm x 31mm x 18mm) Case Material Red Copper, Powder Coating Base Material FR4 PCB (flammability to UL 94V-0 rated) Potting Material Epoxy (flammability to UL 94V-0 rated) Insulated Frame Material Non-Conductive Black Plastic (Flammability to UL 94V-0 rated) Pin Material Tinned Copper RFI Six-Sided Shielded, Metal Case

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 3 of 9 SPECIFICATIONS All specifications are based on 25°C, Nominal Input Voltage, Resistive Load, and Rated Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION TEST CONDITIONS Min Typ Max Unit ENVIRONMENTAL SPECIFICATIONS Operating Temperature(4) Min. Max w/out Heatsink Max. with Heatsink Unit Natural Convection, Nominal Vin, Load 100% Inom MRW20-48S12, MRW20-48S15, MRW20-48S24 -40 72 78 ºC MRW20-24S05, MRW20-24S12, MRW20-24S215, MRW20-24S24, MRW20-48S05, MRW20-48D12, MRW20-48D15 69 76 MRW20-24D12, MRW20-24D15, MRW20-110S12, MRW20-110S15, MRW20-110S24, MRW20-110D12, MRW20-110D15 66 73 MRW20-110S05 59 68 Storage Temperature -50 +125 ºC Thermal Impedance Natural Convection without Heatsink 12.1 ºC/W Natural Convection with Heatsink 9.8 100LFM Convection without Heatsink 9.2 100LFM Convection with Heatsink 5.4 200LFM Convection without Heatsink 7.8 200LFM Convection with Heatsink 4.5 400LFM Convection without Heatsink 5.2 400LFM Convection without Heatsink 3.0 Case Temperature +105 ºC Operating Humidity Non-Condensing 95 %RH Lead Temperature 1.5mm from case for 10Sec 260 ºC Cooling Test Compliance to IEC/EN60068-2-1 Dry Heat Compliance to IEC/EN60068-2-2 Damp Heat Compliance to IEC/EN60068-2-30 Shock & Vibration Test Compliance to IEC/EN61373 MTBF (Calculated) MIL-HDBK-217F@25ºC Full Load, Ground Benign 665.100 Hours SAFETY CHARACTERISTICS Safety Approvals UL/cUL 60950-1 Recognition (UL Certificate), IEC/EN 60950-1 (CB-Report) EN 50155, IEC 60571 UL/cUL 62368-1 Recognition (UL Certificate), IEC/EN 62368-1 (CB Report) General EMC Specifications Compliance with EN 50121-3-2 Railway Applications EMI Conduction EN55032, EN55022, FCC Part 15 Class A EMS EN55024 ESD EN61000-4-2 Air ±8kV, Contact ±6kV A Radiated Immunity EN61000-4-3 10V/3 A Fast Transient EN61000-4-4 ±2kV A Surge EN61000-4-5 ±2kV A Conducted Immunity EN61000-4-6 10Vrms A PFMF EN61000-4-8 3A/M A NOTES 1. To indicate “A” type pinning, add –A suffix to model number. Ex. MRW20-24S05-A To indicate heatsink, add –H suffix to model number. Ex. MRW20-24S05-H To indicate both “A” type pinning and Heatsink, add –AH to model number. Ex. MRW20-24S05-AH 2. # for each output 3. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 4. Natural Convection is about 20LFM but is not equal to still air (0LFM). 5. To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required. Suggested Capacitors: 24V Input Models: CHEMI-CON KY Series 390µF/63V 48V Input Models: CHEMI-CON KY Series 330µF/100V 110V Input Models: CHEMI-CON KXJ Series 390µF/200V 6. Other input and output voltages may be available, please contact factory. 7. It is recommended to protect the converter by a slow blow fuse in the input supply line. *Due to advances in technology, specifications subject to change without notice.

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 4 of 9 DERATING CURVES MRW20-48S12, MRW20-48S15, MRW20-48S24 Derating Curve without Heatsink MRW20-48S12, MRW20-48S15, MRW20-48S24 Derating Curve with Heatsink MRW20-24S05, MRW20-24S12, MRW20-24S15, MRW20-24S24, MRW20-48S05, MRW20-48D12, MRW20-48D15 Derating Curve without Heatsink MRW20-24S05, MRW20-24S12, MRW20-24S15, MRW20-24S24, MRW20-48S05, MRW20-48D12, MRW20-48D15 Derating Curve with Heatsink MRW20-24D12, MRW20-24D15, MRW20-110S12, MRW20-110S15, MRW20-110S24, MRW20-110D12, MRW20-110D15 Derating Curve without Heatsink MRW20-24D12, MRW20-24D15, MRW20-110S12, MRW20-110S15, MRW20-110S24, MRW20-110D12, MRW20-110D15 Derating Curve with Heatsink MRW20-110S05 Derating Curve without Heatsink MRW20-110S05 Derating Curve with Heatsink

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 5 of 9 MECHANICAL DRAWINGS Standard Package Pin Connections Pin Single Output Dual Output 1 +Vin +Vin 2 -Vin -Vin

3 Remote On/Off Remote On/Off

5 Trim Common

Notes: All dimensions in mm (inches) Tolerance: X.X±0.75 (X.XX±0.03) X.XX±0.25 (X.XXX±0.01) Pin Diameter Ø 1.0±0.05 (0.04±0.002) “A” Pinning Option (-A Suffix) Pin Connections Pin Single Output Dual Output 1 +Vin +Vin 2 -Vin -Vin

6 Trim -Vout

Notes: All dimensions in mm (inches) Tolerance: X.X±0.75 (X.XX±0.03) X.XX±0.25 (X.XXX±0.01) Pin diameter Ø 1.0±0.05 (0.04±0.002)

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 6 of 9 Heatsink Option (-H Suffix) Physical Characteristics Heatsink Material: Aluminum Finish: Black Anodized Coating Weight: 0.32oz (9g) Advantages of Heatsink: 1. Improve heat dissipation and increase stability/reliability of DC/DC converter at high operating temperatures. 2. To increase operating temperature of the DC/DC converter, please refer to derating curve. “A” Pinning Option with Heatsink

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 7 of 9 EXTERNAL OUTPUT TRIMMING Output can be externally trimmed by using method shown below: 5V Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Up 1 2 3 4 5 6 7 8 9 10 % 12V Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Up 1 2 3 4 5 6 7 8 9 10 % 15V Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Up 1 2 3 4 5 6 7 8 9 10 % 24V Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Up 1 2 3 4 5 6 7 8 9 10 %

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 8 of 9 TEST SETUP Peak-to-Peak Output Noise Measurement Test Use a 1µF ceramic capacitor and a 10µF tantalum capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20MHz. Position the load between 50mm and 75mm from the DC/DC converter. TECHNICAL NOTES Remote On/Off Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic low. To turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the –Vin terminal. The switch can be an open collector or Overload Protection To provide hiccup mode protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an unlimited duration. Overvoltage Protection The output overvoltage clamp consists of control circuitry, which is independent of the primary regulation loop, that monitors the voltage on the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage control that reduces the risk of output overvoltage. The OVP level can be found in data sheet. Input Source Impedance The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the power module. In applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor at the input to ensure startup. Capacitor mounted close to the power module helps ensure stability of the unit, it is recommended to use a good quality low Equivalent Series Resistance (ESR <1.0Ω at 100KHz) capacitor of a 4.7µF for the 24V input devices, a 2.2µF for the 48V devices and a 1µF for the 110V devices. Output Ripple Reduction A good quality low ESR capacitor placed as close as practicable across the load will give the best ripple and noise performance. To reduce output ripple, it is recommended to use 4.7µF capacitors at the output. Maximum Capacitive Load This series has limitation of maximum connected capacitance at the output. The power module may be operated in current limiting mode during start-up, affecting the ramp-up and the startup time. The maximum capacitance can be found in the data sheet. Thermal Considerations Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 105ºC. The derating curves are determined from the measurements obtained in a test setup.

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797 website: www.wallindustries.com • e-mail: sales@wallindustries.com Page 9 of 9 MODEL NUMBER SETUP MRW 20 - 24 S 05 - A H Series Name Output Power Input Voltage Output Quantity Ouptut Voltage Pinning Option Heatsink 24: 9~36VDC S: Single 05: 5VDC A: A Pinning H: Heatsink 48: 18~75VDC 12: 12VDC AH: A Pinning w/ Heatsink 110: 40~160VDC 15: 15VDC 24: 24VDC D: Dual 12: ±12VDC 15: ±15VDC COMPANY INFORMATION Wall Industries, Inc. has created custom and modified units for over 50 years. Our in- house research and development engineers will provide a solution that exceeds your performance requirements on- time and on budget. Our ISO9001-2008 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: (603)778-2300 Toll Free: (888)597-9255 E-mail: sales@wallindustries.com Web: www.wallindustries.com Address: 37 Industrial Drive Exeter, NH 03833