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50 Watt DC/DC Power Converters

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 11 Standard Models Heatsink Models (Suffix “HS”)

FEATURES

  • RoHS & UL 94V-0 Compliant
  • Smallest Encapsulated 50W Converter
  • 2:1 Wide Input Voltage Ranges
  • Single Outputs
  • Remote ON/OFF Control
  • 1500VDC I/O Isolation
  • No Minimum Load Requirements
  • High Efficiency up to 92%
  • 2.0” x 1.0” x 0.43” Package Size
  • Trimmable Output Voltage
  • Shielded Metal Case with Isolated Base-plate
  • Over Load, Short Circuit, Over Voltage, & Over Temperature Protection
  • -40°C to +80°C Operating Temperature Range
  • UL/cUL/IEC/EN 60950-1 Safety Approvals
  • Heatsink (Optional)

DESCRIPTION

The DH50 series is the latest generation of high performance DC/DC converters setting a new standard concerning power density. These converters offer 50 Watts of continuous output power in a 2.0” x 1.0” x 0.43” encapsulated, shielded metal package. All models have a 2:1 wide input voltage range and a precisely regulated single output. Advanced circuit topology provides a very high efficiency up to 92% 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. MODEL SELECTION TABLE Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current (Typ) Over Voltage Protection Output Power Efficiency Maximum Capacitive Load No Load Max Load DH12S3.3-33

12 VDC

(9 – 18 VDC)

3.3 VDC 10A 85mA 3090mA

3.9 VDC 33W 89% 25800μF

DH12S5-50 5 VDC 10A 110mA 4630mA 6.2 VDC 50W 90% 17000μF DH12S12-50 12 VDC 4.17A 160mA 4580mA 15 VDC 50W 91% 2900μF DH12S15-50 15 VDC 3.33A 160mA 4580mA 18 VDC 50W 91% 1900μF DH12S24-50 24 VDC 2.08A 250mA 4570mA 30 VDC 50W 91% 750µF DH24S3.3-33

24 VDC

(18 – 36 VDC)

3.3 VDC 10A 50mA 1550mA

DH24S5-50 5 VDC 10A 70mA 2260mA 6.2 VDC 50W 92% 17000μF DH24S12-50 12 VDC 4.17A 85mA 2260mA 15 VDC 50W 92% 2900μF DH24S15-50 15 VDC 3.33A 85mA 2260mA 18 VDC 50W 92% 1900μF DH24S24-50 24 VDC 2.08A 110mA 2290mA 30 VDC 50W 91% 750µF DH48S3.3-33

48 VDC

(36 – 75 VDC)

3.3 VDC 10A 35mA 770mA

DH48S5-50 5 VDC 10A 45mA 1130mA 6.2 VDC 50W 92% 17000μF DH48S12-50 12 VDC 4.17A 50mA 1130mA 15 VDC 50W 92% 2900μF DH48S15-50 15 VDC 3.33A 50mA 1130mA 18 VDC 50W 92% 1900μF DH48S24-50 24 VDC 2.08A 60mA 1150mA 30 VDC 50W 91% 750µF NOTES 1. Transient recovery time is measured to within 1% error band for a step change in output load from 75% to 100%. 2. We recommend protecting the converter by a slow blow fuse in the input supply line. 3. The DH50 series can meet EN55022 Class A with external capacitors in parallel with the input pins.

  • 12Vin Models: 22µF/25V 1210 MLCC
  • 24Vin Models: 3.3µF/50V 1210 MLCC
  • 48Vin Models: 2.2µF/100V 1210 MLCC 4. To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required. Suggested capacitor: CHEMI-CON KY 330µF/100V 5. Do not exceed maximum power specifications when adjusting the output voltage. 6. To order the converter with a heatsink, please add the suffix “HS” to the model number. (Ex: DH12S12-50HS). 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 2 of 11 SPECIFICATIONS: DH50 SERIES 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 INPUT SPECIFICATIONS Input Voltage Range 12VDC nominal input models 9 12 18 VDC 24VDC nominal input models 18 24 36 48VDC nominal input models 36 48 75 Input Surge Voltage (100ms max.) 12VDC nominal input models -0.7 25 VDC 24VDC nominal input models -0.7 50 48VDC nominal input models -0.7 100 Start-up Threshold Voltage 12VDC nominal input models 9 VDC 24VDC nominal input models 18 48VDC nominal input models 36 Under Voltage Lockout (UVLO) 12VDC nominal input models 8.3 VDC 24VDC nominal input models 16.5 48VDC nominal input models 33 Start-up Time Nominal Vin and constant resistive load Power Up 30 ms Remote On/Off 30 Input Current See Table Reflected Ripple Current (Page 10) See Table Conducted EMI for EN55032 Class A and FCC level A compliance see Note 3 Internal LC Filter Short Circuit Current Hiccup mode 24VDC output models 0.3 Hz Others 1.5 OUTPUT SPECIFICATIONS Output Voltage See Table Line Regulation Low line to high line at full load ±0.5 % Load Regulation Minimum load to full load ±0.5 % Output Voltage Setting Accuracy At 50% load and nominal Vin ±1.0 %Vnom Output Voltage Trim (Page 5) % of nominal output voltage 24VDC output models -10 +20 % Others -10 +10 Output Power See Table Output Current See Table Minimum Load No minimum load required Ripple & Noise (0-20MHz) (Page 10) Measured with a 1µF MLCC and a 10µF tantalum capacitor in parallel 3.3V & 5V output models 100 mVp-p 12V, 15V, & 24V output models 150 Transient Recovery Time (Note 1) 25% load step change 250 µs Transient Recovery Deviation (Note 1) 25% load step change ±3 ±5 % Temperature Coefficient ±0.02 %/°C PROTECTION Input Polarity Protection none Over Voltage Protection (page 10) For shutdown voltage see table Over Current Protection Hiccup Current limitation at 150% typ. of Iout max. Thermal Protection Shutdown temperature 110 °C Short Circuit Protection Hiccup, automatic recovery GENERAL SPECIFICATIONS Efficiency (see efficiency curves on pages 7-9) See Table Switching Frequency 24VDC output models 285 KHz Others 320 Isolation Voltage (Input to Output) 60 seconds 1500 VDC 1 second 1800 Isolation Resistance 500VDC 1000 MΩ Isolation Capacitance 100kHz, 1V 2200 pF Maximum Capacitive Load See Table

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 11 SPECIFICATIONS: DH50 SERIES 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 REMOTE ON/OFF (Page 10) Positive Logic Converter On 3.5 ~ 12V or open circuit Converter Off 0V ~ 1.2 or short circuit Control Input Current On Vctrl = 5.0V 0.5 mA Off Vctrl = 0V -0.5 Control Common Referenced to negative input Stand-by Input Current Nominal Vin 2.5 mA ENVIRONMENTAL SPECIFICATIONS Operating Temperature (W/O Heatsink) (see derating curves on pages 6-7) Natural air convection (20LFM) Nominal Vin and full load 3.3VDC Output Models -40 +56 °C DH24S5-50, DH24S12-50 DH24S15-50, DH48S5-50 DH48S12-50, DH48S15-50 -40 +53 °C DH12S12-50, DH12S15-50, DH12S24-50, DH24S24-50, DH48S24-50 -40 +46 °C DH12S5-50 -40 +38 °C Operating Temperature (W/ Heatsink) (see derating curves on pages 6-7) Natural air convection (20LFM) Nominal Vin and full load 3.3VDC Output Models -40 +64 °C DH24S5-50, DH24S12-50 DH24S15-50, DH48S5-50 DH48S12-50, DH48S15-50 -40 +62 °C DH12S12-50, DH12S15-50, DH12S24-50, DH24S24-50, DH48S24-50 -40 +56 °C DH12S5-50 -40 +49 °C Thermal Impedance (W/O Heatsink) Natural convection (20LFM) 12.1 °C/W 100LFM convection 9.2 200LFM convection 7.8 400LFM convection 5.2 Thermal Impedance (W/ Heatsink) Natural convection (20LFM) 9.8 °C/W 100LFM convection 5.4 200LFM convection 4.5 400LFM convection 3.0 Case Temperature +105 °C Storage Temperature -50 +125 °C Humidity (non-condensing) 95 % RH RFI Six-sided shielding, metal case Cooling Natural convection is about 20LFM but is not equal to still air (0LFM) natural convection Lead Temperature 1.5mm from case for 10 seconds 260 °C MTBF (calculated) MIL-HDBK-217F at 25°C, Ground Benign 224,700 hours PHYSICAL SPECIFICATIONS Weight 1.06oz (30g) Dimensions (L x W x H) 2.00 x 1.00 x 0.43 inches (50.8 x 25.4 x 11.0 mm) Case Material Aluminum alloy, black anodized coating Base Material FR4 PCB (flammability to UL 94V-0 rated) Potting Material Epoxy (UL94-V0) Pin Material Copper alloy with gold plate over nickel sub- plate Heatsink (optional) “HS” suffix See page 4 SAFETY & EMC Safety Approvals UL/cUL 60950-1 recognition (CSA certificate) IEC/EN 60950-1 (CB-scheme) EMI (See Note 3) 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 (See Note 4) EN61000-4-4 ±2KV A Surge (See Note 4) EN61000-4-5 ±1KV A Conducted Immunity EN61000-4-6 10V/m A

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 11 MECHANICAL DRAWINGS Standard Models Heatsink Models (“HS” Suffix)

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 11 OUTPUT VOLTAGE ADJUSTMENT Output voltage trim allows the user to increase or decrease the output voltage of a module. This is accomplished by connecting an external resistor between the Trim pin and either the +Vout or –Vout pins. With an external resistor between the Trim and –Vout pins, the output voltage increases. With an external resistor between the Trim and +Vout pins, the output voltage set-point decreases. Trim Up Trim Down DHXXS3.3-33 DHXXS5-50 Trim Vout,up Rup Trim Vout,up Rup 1% 3.333V 60.84kΩ 1% 5.05V 106.87kΩ 2% 3.366V 27.40kΩ 2% 5.10V 47.76kΩ 3% 3.399V 16.25kΩ 3% 5.15V 28.06kΩ 4% 3.432V 10.68kΩ 4% 5.20V 18.21kΩ 5% 3.465V 7.34kΩ 5% 5.25V 12.30kΩ 6% 3.498V 5.11kΩ 6% 5.30V 8.36kΩ 7% 3.531V 3.51kΩ 7% 5.35V 5.55kΩ 8% 3.564V 2.32kΩ 8% 5.40V 3.44kΩ 9% 3.597V 1.39kΩ 9% 5.45V 1.79kΩ 10% 3.630V 0.65kΩ 10% 5.50V 0.48kΩ DHXXS12-50 DHXXS15-50 Trim Vout,up Rup Trim Vout,up Rup 1% 12.12V 351.00kΩ 1% 15.15V 427.77kΩ 2% 12.24V 157.50kΩ 2% 15.30V 189.89kΩ 3% 12.36V 93.00kΩ 3% 15.45V 112.26kΩ 4% 12.48V 60.75kΩ 4% 15.60V 73.44kΩ 5% 12.60V 41.40kΩ 5% 15.75V 50.15kΩ 6% 12.72V 28.50kΩ 6% 15.90V 34.63kΩ 7% 12.84V 19.29kΩ 7% 16.05V 23.54kΩ 8% 12.96V 12.37kΩ 8% 16.20V 15.22kΩ 9% 13.08V 7.00kΩ 9% 16.35V 8.75kΩ 10% 13.20V 2.70kΩ 10% 16.50V 3.58kΩ DHXXS24-50 Trim Vout,up Rup 2% 24.48V 243.70kΩ 4% 24.96V 108.50kΩ 6% 25.44V 63.43kΩ 8% 25.92V 40.90kΩ 10% 26.40V 27.38kΩ 12% 26.88V 18.37kΩ 14% 27.36V 11.93kΩ 16% 27.84V 7.10kΩ 18% 28.32V 3.34kΩ 20% 28.80V 0.34kΩ DHXXS3.3-33 DHXXS5-50 Trim Vout,down Rdown Trim Vout,down Rdown 1% 3.267V 72.61kΩ 1% 4.95V 138.88kΩ 2% 3.234V 32.55kΩ 2% 4.90V 62.41kΩ 3% 3.201V 19.20kΩ 3% 4.85V 36.92kΩ 4% 3.168V 12.52kΩ 4% 4.80V 24.18kΩ 5% 3.135V 8.51kΩ 5% 4.75V 16.53kΩ 6% 3.102V 5.84kΩ 6% 4.70V 11.44kΩ 7% 3.069V 3.94kΩ 7% 4.65V 7.79kΩ 8% 3.036V 2.51kΩ 8% 4.60V 5.06kΩ 9% 3.003V 1.39kΩ 9% 4.55V 2.94kΩ 10% 2.970V 0.50kΩ 10% 4.50V 1.24kΩ DHXXS12-50 DHXXS15-50 Trim Vout,down Rdown Trim Vout,down Rdown 1% 11.88V 413.55kΩ 1% 14.85V 530.73kΩ 2% 11.76V 184.55kΩ 2% 14.70V 238.61kΩ 3% 11.64V 108.22kΩ 3% 14.55V 141.24kΩ 4% 11.52V 70.05kΩ 4% 14.40V 92.56kΩ 5% 11.40V 47.15kΩ 5% 14.25V 63.35kΩ 6% 11.28V 31.88kΩ 6% 14.10V 43.87kΩ 7% 11.16V 20.98kΩ 7% 13.95V 29.96kΩ 8% 11.04V 12.80kΩ 8% 13.80V 19.53kΩ 9% 10.92V 6.44kΩ 9% 13.65V 11.41kΩ 10% 10.80V 1.35kΩ 10% 13.50V 4.92kΩ DHXXS24-50 Trim Vout,down Rdown 1% 23.760V 333.39kΩ 2% 23.520V 148.80kΩ 3% 23.280V 87.26kΩ 4% 23.040V 56.50kΩ 5% 22.800V 38.04kΩ 6% 22.560V 25.73kΩ 7% 22.320V 16.94kΩ 8% 22.080V 10.35kΩ 9% 21.840V 5.22kΩ 10% 21.600V 1.12kΩ

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 11 DERATING CURVES DH12S3.3-33, DH24S3.3-33, DH48S3.3-33 Derating Curve Without Heatsink DH12S3.3-33, DH24S3.3-33, DH48S3.3-33 Derating Curve With Heatsink DH24S5-50, DH24S12-50, DH24S15-50, DH48S5-50, DH48S12- 50, DH48S15-50 Derating Curve Without Heatsink DH24S5-50, DH24S12-50, DH24S15-50, DH48S5-50, DH48S12- 50, DH48S15-50 Derating Curve With Heatsink DH12S12-50, DH12S15-50, DH12S24-50, DH24S24-50, DH48S24-50 Derating Curve Without Heatsink DH12S12-50, DH12S15-50, DH12S24-50, DH24S24-50, DH48S24-50 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 7 of 11 DERATING CURVES DH12S5-50 Derating Curve Without Heatsink DH12S5-50 Derating Curve With Heatsink EFFICIENCY CURVES DH12S3.3-33 Efficiency vs Load Current DH12S5-50 Efficiency vs Load Current DH12S12-50 Efficiency vs Load Current DH12S15-50 Efficiency vs Load Current

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 11 EFFICIENCY CURVES DH12S24-50 Efficiency vs Load Current DH24S3.3-33 Efficiency vs Load Current DH24S5-50 Efficiency vs Load Current DH24S12-50 Efficiency vs Load Current DH24S15-50 Efficiency vs Load Current DH24S24-50 Efficiency vs Load Current

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 11 EFFICIENCY CURVES DH48S3.3-33 Efficiency vs Load Current DH48S5-50 Efficiency vs Load Current DH48S12-50 Efficiency vs Load Current DH48S15-50 Efficiency vs Load Current DH48S24-50 Efficiency vs Load Current

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 11 DESIGN CONSIDERATIONS 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 100 KHz) to simulate source impedance. Capacitor Cin offsets possible battery impedance. Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0-500 KHz. 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. TEST SETUP 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 module on and off, the user must supply a switch to control the voltage between the on/off terminal and the –Vin maximum sink current at on/off terminal (Pin 3) during a logic low is -100µA. Over Current Protection To provide protection in a fault (output overload) 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 over voltage. The OVP level can be found in the model selection table. 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 100 KHz) capacitor of 33µF for the 12VDC input models and a 10µF for the 24VDC and 48VDC input models.

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 11 Output Ripple Reduction A good quality low ESR capacitor placed as close as possible across the load will giv e 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 DH50 series has a limitation of maximum connected capacitance on the output. The power module may be operated in current limiting mode during start-up, affecting the ramp-up and the start-up time. The maximum capacitance can be found in the Model Selection Table. 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 105°C. The derating curves are determined from measure ments obtained in a test setup. MODEL NUMBER SETUP DH 24 S 12 - 50 HS Series Name Input Voltage Output Quantity Ouptut Voltage Output Power Heatsink 12: 9 - 18 VDC S: Single Output 3.3: 3.3 VDC 33: 33 Watts None: No Heatsink 24: 18 - 36 VDC 5: 5 VDC 50: 50 Watts HS: Heatsink 48: 36 - 75 VDC 12: 12 VDC 15: 15 VDC 24: 24 VDC 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