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40 Watts

Single & Dual Outputs 1/9/2018 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 12

FEATURES

  • RoHS & REACH Compliant
  • 40 Watts Output Power
  • 4:1 Ultra Wide Input Voltage Ranges
  • Single & Dual Outputs
  • Remote ON/OFF Control
  • 1500VDC I/O Isolation
  • High Efficiency up to 91%
  • Under Voltage Lockout (UVLO)
  • 2.0” x 1.0” x 0.4” Package Size
  • Trimmable Output Voltage
  • Shielded Metal Case with Isolated Base-plate
  • High Power Density
  • Over Load, Short Circuit, Over Voltage, and Over Temperature Protection
  • UL/cUL/IEC/EN 60950-1 Safety Approvals
  • Heatsink (Optional)

DESCRIPTION

The DHW40 series is the latest generation of high performance DC/DC converters setting a new standard concerning power density. These converters offer 40 Watts of continuous output power in a 2.0” x 1.0” x 0.4” encapsulated, shielded metal package. The DHW40 series has single and dual output models with 4:1 ultra wide input voltage ranges of 9-36VDC and 18-75VDC. Advanced circuit topology provides a very high efficiency up to 91% and an operating temperature range of -40°C to +80°C. Further features include remote on/off, trimmable output voltage, under-voltage lockout as well as over load, over voltage, short circuit, and over- temperature protection. These converters are RoHS compliant and are ideal for use in battery operated equipment, instrumentation, distributed power architectures in communication and industrial electronics and many other space critical applications. Size: 2in x 1in x 0.40~0.43in (50.8mm x 25.4mm x 10.2~11mm) MODEL SELECTION TABLE Single Output Models Model Number(1) Input Voltage Range Output Voltage Output Current Input Current Output Power Maximum Capacitive Load Efficiency Over Voltage Protection Reflected Ripple Current Min Load Max Load No Load Max Load DHW24S3.3-26 24VDC (9~36VDC) 3.3VDC 0mA 8A 90mA 1.24A 26.4W 21000µF 89% 3.9VDC 30mA Typ. DHW24S5-40 5VDC 0mA 8A 90mA 1.85A 40W 13600µF 90% 6.2VDC DHW24S12-40 12VDC 0mA 3.33A 95mA 1.87A 40W 2400µF 89% 15VDC DHW24S15-40 15VDC 0mA 2.67A 105mA 1.87A 40W 1500µF 89% 18VDC DHW24S24-40 24VDC 0mA 1.67A 115mA 1.835A 40W 600µF 91% 30VDC DHW48S3.3-26 48VDC (18~75VDC) 3.3VDC 0mA 8A 55mA 620mA 26.4W 21000µF 89% 3.9VDC 20mA Typ. DHW48S5-40 5VDC 0mA 8A 55mA 930mA 40W 13600µF 90% 6.2VDC DHW48S12-40 12VDC 0mA 3.33A 60mA 930mA 40W 2400µF 90% 15VDC DHW48S15-40 15VDC 0mA 2.67A 65mA 930mA 40W 1500µF 90% 18VDC DHW48S24-40 24VDC 0mA 1.67A 75mA 918mA 40W 600µF 91% 30VDC MODEL SELECTION TABLE Dual Output Models Model Number Input Voltage Range Output Voltage Output Current Input Current Output Power Maximum Capacitive Load Efficiency Over Voltage Protection Reflected Ripple Current Min Load Max Load No Load Max Load DHW24D12-40 24VDC (9~36VDC) DHW48D12-40 48VDC (18~75VDC) ±12 VDC ±145mA ±1.67A 45mA 950mA 40W 1200µF* 88% ±15 VDC 20mA Typ. DHW48D15-40 ±15 VDC ±110mA ±1.33A 45mA 950mA 40W 750µF* 88% ±18 VDC * for each output

Single & Dual Outputs 1/9/2018 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 12 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 24VDC Nominal Input Models 9 24 36 VDC 48VDC Nominal Input Models 18 48 75 Input Surge Voltage (100ms Max.) 24VDC Nominal Input Models -0.7 50 VDC 48VDC Nominal Input Models -0.7 100 Start-Up Threshold Voltage 24VDC Nominal Input Models 9 VDC 48VDC Nominal Input Models 18 Under Voltage Lockout 24VDC Nominal Input Models 8.3 VDC 48VDC Nominal Input Models 16.5 Input Filter All models Internal LC Type OUTPUT SPECIFICATIONS Output Voltage See Table Voltage Accuracy ±1.0 %Vnom Line Regulation Vin=Min. to Max. @Full Load ±0.5 % Load Regulation Min. Load to Full Load Single Outputs ±0.5 % Dual Outputs ±1.0 Voltage Balance Dual Outputs, Balanced Loads ±2.0 % Load Cross Regulation Dual Outputs, Asymmetrical Load 25%/100% Full Load ±5.0 % Trim Up/Down Range % of Nominal Output Voltage 24V Models -10 +20 % Other Models ±10 Output Power See Table Output Current See Table Minimum Load Single Output Models No Minimum Load Requirement Dual Output Models See Table Maximum Capacitive Load See Table Ripple & Noise (20MHz bandwidth)(2) 0-20MHz Bandwidth 3.3V & 5V 100 mVp-p 12V, 15V, & 24V Models 150 Dual Output Models 150 Transient Recovery Time(3) 25% Load Step Change 250 µsec Transient Response Deviation 25% Load Step Change ±3 ±5 % Start-Up Time (Power On) Nominal Vin and Constant Resistive Load 30 ms Temperature Coefficient ±0.02 %/ºC REMOTE ON/OFF CONTROL Converter On 3.5~12V or Open Circuit Converter Off 0V~1.2V or Short Circuit Control Input Current On, Vctrl=5.0V 0.5 mA Off, Vctrl=0V -0.5 Control Common Referenced to Negative Input Remote OFF Input Current Nominal Vin 2.5 mA PROTECTION Short Circuit Protection 24V Output Model 0.3Hz Typ. Automatic Recovery Others Hiccup Mode 1.5Hz Typ. Over Load Protection Hiccup Circuit Limitation at 150% typ. of Iout max. Over Voltage Protection See Table Over Temperature Protection Shutdown Temperature +110 ºC GENERAL SPECIFICATIONS Efficiency See Table Switching Frequency 24V Models 285 KHz Other Models 320 Isolation Voltage 60 Seconds 1500 VDC 1 Second 1800 Isolation Resistance 500VDC 1000 MΩ Isolation Capacitance 100KHz, 1V 1500 PHYSICAL SPECIFICATIONS Weight 1.06oz (30g) Dimensions (L x W x H) 24V Models 2in x 1in x 0.43in (50.8mm x 25.4mm x 11mm) Others 2in x 1in x 0.40in (50.8mm x 25.4mm x 10.2mm) Case Material Aluminum Alloy, Black Anodized Coating Base Material FR4 PCB (Flammability to UL 94V-0 Rated) Pin Material Copper Alloy w/ Gold Plate Over Nickel Subplate RFI Six-Sided Shielded, Metal Case

Single & Dual Outputs 1/9/2018 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 12 SPECIFICATIONS All specifications are based on 25°C, Nominal Input Voltage, and Maximum 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 Ambient Temperature (Without Heatsink) Natural Convection, Nomina Vin, Load 100% Inom DHW24S3.3-26, DHW48S3.3-26 -40 66 ºC DHW24S05-40, DHW48S05-40, DHW48S12-40, DHW48S15-40 -40 51 DHW24S12-40, DHW24S15-40 -40 45 DHW24S24-40, DHW48S24-40 -40 57 DHW24D12-40, DHW24D15-40, DHW48D12-40, DHW48D15-40 -40 40 Operating Ambient Temperature (With Heatsink) Natural Convection, Nomina Vin, Load 100% Inom DHW24S3.3-26, DHW48S3.3-26 -40 73 ºC DHW24S05-40, DHW48S05-40, DHW48S12-40, DHW48S15-40 -40 61 DHW24S12-40, DHW24S15-40 -40 57 DHW24S24-40, DHW48S24-40 -40 66 DHW24D12-40, DHW24D15-40, DHW48D12-40, DHW48D15-40 -40 52 Storage Temperature -50 +125 ºC Thermal Impedance (Without Heatsink) Natural Convection 12.0 ºC/W 100LFM 9.0 200LFM 8.0 400LFM 6.0 Thermal Impedance (With Heatsink) Natural Convection 10.0 ºC/W 100LFM 5.4 200LFM 4.5 400LFM 3.0 Relative Humidity Non-Condensing 95 %RH Case Temperature +105 ºC Cooling(4) Natural Convection. Lead Temperature 1.5mm from case for 10Sec 260 ºC MTBF MIL-HDBK-217F @25ºC, Ground Benign 328,000 Hours SAFETY CHARACTERISTICS Safety Approvals UL/cUL 60950-1 Recognition (CSA Certificate) IEC/EN 60950-1 (CB-Report) EMI Conduction EN55032, FCC Part 15 Class A EMS EN55024 ESD EN61000-4-2 Air±8kV, Contact ±6kV A Radiated Immunity EN61000-4-3 10V/m A Fast Transient EN61000-4-4 ±2kV(5) A Surge EN61000-4-5 ±1kV(5) A Conducted Immunity EN61000-4-6 10Vrms A PFMF EN61000-4-8 3A/m A NOTES 1. Heatsink is available for models. Add “HS1” to model name for 24V model heatsink, or “HS” for other models. 2. Ripple & Noise measurement with a 1µF M/C and a 10µF T/C. 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 (0 LFM). 5. To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required. Suggested capacitor: 330µF/100V. 6. It is recommended to protect the converter by a slow blow fuse in the input supply line. 7. Other input and output voltages may be available, please contact factory. 8. Do not exceed maximum power specification when adjusting output voltage. *Due to advances in technology, specifications subject to change without notice.

Single & Dual Outputs 1/9/2018 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 12 DERATING CURVES DHW24S3.3-26 & DHW48S3.3-26 Derating Curve without Heatsink DHW24S3.3-26 & DHW48S3.3-26 Derating Curve with Heatsink DHW24S05-40, DHW48S05-40, DHW48S12-40, DHW48S15-40 Derating Curve without Heatsink DHW24S05-40, DHW48S05-40, DHW48S12-40, DHW48S15-40 Derating Curve with Heatsink DHW24S12-40 & DHW24S15 Derating Curve without Heatsink DHW24S12-40 & DHW24S15 Derating Curve with Heatsink

Single & Dual Outputs 1/9/2018 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 12 DHW24D12-40, DHW24D15-40, DHW48D12-40, DHW48D15-40 Derating Curve without Heatsink DHW24D12-40, DHW24D15-40, DHW48D12-40, DHW48D15-40 Derating Curve with Heatsink DHW24S24-40, DHW48S24-40 Derating Curve without Heatsink DHW24S24-40, DHW48S24-40 Derating Curve with Heatsink EFFICIENCY GRAPHS 24VDC Nominal Input Voltage, 25ºC DHW24S03.3-26 Efficiency vs. Load Current DHW24S05-40 Efficiency vs. Load Current

Single & Dual Outputs 1/9/2018 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 12 DHW24S12-40 Efficiency vs. Load Current DHW24S15-40 Efficiency vs. Load Current DHW24S24-40 Efficiency vs. Load Current DHW24D12-40 Efficiency vs. Load Current DHW24D15-40 Efficiency vs. Load Current

Single & Dual Outputs 1/9/2018 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 12 EFFICIENCY GRAPHS 48VDC Nominal Input Voltage, 25ºC DHW48S03.3-26 Efficiency vs. Load Current DHW48S05-40 Efficiency vs. Load Current DHW48S12-40 Efficiency vs. Load Current DHW48S15-40 Efficiency vs. Load Current DHW24S48-40 Efficiency vs. Load Current DHW48D12-40 Efficiency vs. Load Current DHW48D15-40 Efficiency vs. Load Current

Single & Dual Outputs 1/9/2018 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 12 MECHANICAL DRAWINGS Pin Connections Pin Single Output Dual Output 1 +Vin +Vin 2 -Vin -Vin

3 Remote On/Off Remote On/Off

6 Trim -Vout

T: 11mm (0.43in) for 24V Output Models T: (10.2mm (0.40in) for Other Output Models Notes: All dimensions in mm (inches) Tolerance: X.X±0.25 (X.XX±0.01) X.XX±0.13 (X.XXX±0.005) Pin Diameter Ø 1.0±0.05 (0.04±0.002) Heatsink Option (-HS or -HS1 Suffix) Physical Characteristics Heatsink Material: Aluminum Finish: Black Anodized Coating T: 18.0mm (0.71in) for 24V Output Models T: 17.2mm (0.68in) for Other Output Models The advantages of adding heatsink are: 1. Improve heat dissipation and increase stability and reliability of the DC/DC converters at high operating temperatures. 2. To increase operating temperature of the DC/DC converter, see derating curve.

Single & Dual Outputs 1/9/2018 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 12 EXTERNAL OUTPUT TRIMMING Output can be externally trimmed using the method shown below: 3.3VDC 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 % 5VDC 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 % 12VDC Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Down 1 2 3 4 5 6 7 8 9 10 % 15VDC Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Down 1 2 3 4 5 6 7 8 9 10 % 24VDC Models Trim Down 1 2 3 4 5 6 7 8 9 10 % Trim Down 2 4 6 8 10 12 14 16 18 20 %

Single & Dual Outputs 1/9/2018 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 10 of 12 TEST SETUP Input Reflected-Ripple Current Test Setup Input reflected ripple-current is measured with an inductor Lin (4.7µH) and Cin (220µF, ESR < 1.0Ω at 100KHz) to simulate source impedance. Capacitor Cin, offsets possible battery impedance. Current ripple is measured at the input terminals of the module, measurement bandwidth is 0- 500KHz. 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 The maximum allowable leakage current of a switch connected to the on/off terminal (Pin 3) at logic high (2.5V to 100V) is 5µA. Over Load Protection To provide hiccup mode protection in a fault (output over load) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an unlimited duration. Over Voltage Protection The output over voltage 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 10µF for the 24V and 48V devices.

Single & Dual Outputs 1/9/2018 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 11 of 12 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 The DHW40 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 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 measurements obtained in a test setup. MODEL NUMBER SETUP DHW 24 S 15 - 40 - HS Series Name Input Power Output Quantity Output Voltage Ouptut Power Heatsink Option 24: 9~36VDC S: Single 3.3: 3.3VDC 26: 26.4 Watts HS: Standard Heatsink 48: 18~75VDC 5: 5VDC 40: 40 Watts HS1: Heatsink for 24V Models 12: 12VDC 15: 15VDC 24: 24VDC D: Dual 12: ±12VDC 15: ±15VDC

Single & Dual Outputs 1/9/2018 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 12 of 12 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