DCMCU2 SERIES 2 Watt DC/DC Power Converters Rev A FEATURES • RoHS Compliant • Small Footprint: 0.86” x 0.37” • 2 Watts Output Power • Fully Regulated Single & Dual Outputs • Remote On/Off Control • Ultra Wide 4:1 Input Voltage Ranges • 1500VDC I/O Isolation • -40°C to +90°C Operating Temperature Range • High Efficiency up to 82% • Short Circuit Protection • High Power Density in SIP-8 Package • CSA/UL/IEC/EN 60950-1 Safety Approvals (Pending) Size: 0.86 x 0.37 x 0.44 inches 21.8 x 9.3 x 11.2 mm DESCRIPTION The DCMCU2 series of DC/DC power converters consists of fully regulated single and dual output models with 4:1 ultra wide input voltage ranges of 4.5-18 VDC, 9-36 VDC, and 18-75 VDC. These converters provide 2 Watts of output power in a very small SIP-8 package occupying only 0.32 square inches on the PCB. An excellent efficiency allows an operating temperature range up to +75°C at full load without derating. Further features include 1500VDC I/O isolation, remote on/off control, and short circuit protection. These converters are RoHS compliant and have CSA/UL/IEC/EN 60950-1 safety approvals. These converters’ very compact dimensions make them an ideal solution for many space critical applications in battery powered instrumentations. MODEL SELECTION TABLE SINGLE OUTPUT MODELS Model Number Input Voltage 3.3 VDC DCMCU2-12S33 DCMCU2-12S05 DCMCU2-12S12 Output Voltage 12 VDC (4.5 - 18 VDC) Output Current Min Max 0mA 500mA 5 VDC 0mA 400mA Input Current No Load Max Load 183mA 60mA Ripple & Noise Output Power Efficiency Maximum Capacitive Load 50mVp-p 1W 75% 1000µF 208mA 50mVp-p 1W 80% 1000µF 12 VDC 0mA 167mA 204mA 50mVp-p 1W 82% 170µF DCMCU2-12S15 15 VDC 0mA 134mA 204mA 50mVp-p 1W 82% 110µF DCMCU2-24S33 3.3 VDC 0mA 500mA 92mA 50mVp-p 1W 75% 1000µF 5 VDC 0mA 400mA 104mA 50mVp-p 1W 80% 1000µF 12 VDC 0mA 167mA 102mA 50mVp-p 1W 82% 170µF 15 VDC 0mA 134mA 102mA 50mVp-p 1W 82% 110µF DCMCU2-24S05 DCMCU2-24S12 24 VDC (9 - 36 VDC) DCMCU2-24S15 3.3 VDC 0mA 500mA 46mA 50mVp-p 1W 74% 1000µF 5 VDC 0mA 400mA 52mA 50mVp-p 1W 80% 1000µF 12 VDC 0mA 167mA 51mA 50mVp-p 1W 82% 170µF 15 VDC 0mA 134mA 51mA 50mVp-p 1W 82% 110µF Output Voltage Ripple & Noise Output Power Efficiency Maximum Capacitive Load ±5 VDC Output Current Min Max 0mA ±200mA 50mVp-p 1W 80% ±470µF ±12 VDC 0mA ±83mA 202mA 50mVp-p 1W 82% ±100µF ±15 VDC 0mA ±67mA 204mA 50mVp-p 1W 82% ±47µF ±5 VDC 24 VDC ±12 VDC (9 - 36 VDC) ±15 VDC 0mA ±200mA 104mA 50mVp-p 1W 80% ±470µF 0mA ±83mA 101mA 50mVp-p 1W 82% ±100µF 0mA ±67mA 102mA 50mVp-p 1W 82% ±47µF ±5 VDC 0mA ±200mA 52mA 50mVp-p 1W 80% ±470µF ±12 VDC 0mA ±83mA 51mA 50mVp-p 1W 82% ±100µF ±15 VDC 0mA ±67mA 51mA 50mVp-p 1W 82% ±47µF DCMCU2-48S33 DCMCU2-48S05 DCMCU2-48S12 30mA 48 VDC (18 - 75 VDC) DCMCU2-48S15 20nA DUAL OUTPUT MODELS Model Number DCMCU2-12D05 DCMCU2-12D12 DCMCU2-12D15 DCMCU2-24D05 DCMCU2-24D12 DCMCU2-24D15 DCMCU2-48D05 DCMCU2-48D12 DCMCU2-48D15 12/30/2013 Input Voltage 12 VDC (4.5 - 18 VDC) 48 VDC (18 - 75 VDC) Input Current No Load Max Load 208mA 60mA 30mA 20mA 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: [email protected] Page 1 of 5 Rev A DCMCU2 SERIES 2 Watt DC/DC Power Converters SPECIFICATIONS: DCMCU2 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 4.5 9 18 -0.7 -0.7 -0.7 3 4.5 8.5 12 24 48 Max Unit INPUT SPECIFICATIONS Input Voltage Range Input Surge Voltage (1 sec. max.) Start-up Threshold Voltage 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models 18 36 75 25 50 100 4 4.5 6 9 12 18 See Table 4 8 16 1500 1000mA slow-blow type 500mA slow-blow type 250mA slow-blow type Capacitor type Input Current Under Voltage Shutdown 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models Short Circuit Input Power 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models All models Input Fuse Internal Filter Type VDC VDC VDC VDC mW OUTPUT SPECIFICATIONS Output Voltage Output Voltage Setting Accuracy Output Voltage Balance Line Regulation Load Regulation Minimum Load Output Power Output Current Ripple & Noise Transient Recovery Time Transient Response Deviation Temperature Coefficient See Table ±2.0 %Vnom. ±1.0 ±2.0 % ±0.3 ±0.5 % ±0.5 ±1.0 % No minimum load requirements 2 W See Table 50 100 mVp-p 300 500 µs ±3 ±5 % ±0.01 ±0.02 %/°C At 50% load and nominal Vin Dual output, balanced loads Low line to high line No load to full load 20MHz bandwidth 25% load step change 25% load step change PROTECTION Short Circuit Protection Continuous REMOTE ON/OFF CONTROL Converter On Converter Off Standby Input Current Open or high impedance 2~4mA current applied via 1KΩ resistor 2.5 mA Supply off and nominal Vin GENERAL Efficiency Switching Frequency Isolation Voltage (Input to Output) Isolation Resistance Isolation Capacitance Maximum Capacitive Load See Table 300 60 seconds 500VDC 100kHz, 1V 1500 1000 250 500 See Table KHz VDC MΩ pF ENVIRONMENTAL SPECIFICATIONS Operating Temperature Range Case Temperature Storage Temperature Humidity Cooling Lead Temperature Natural convection -40 MTBF (calculated) MIL-HDBK-217F at 25°C, Ground Benign -55 Non-condensing 1.5mm from case for 10 seconds +90 +105 +125 95 natural convection 260 1,000,00 0 °C °C °C % RH °C hours PHYSICAL SPECIFICATIONS Weight 0.16oz (4.66g) 0.86 x 0.37 x 0.44 inch (21.8 x 9.3 x 11.2 mm) Non-conductive black plastic Alloy 42 Dimensions (L x W x H) Case Material Pin Material Flammability to UL 94V-0 rated SAFETY & EMC Safety Approvals (pending) UL/cUL 60950-1 recognition (CSA certificate), IEC/EN 60950-1 (CB-scheme) *Due to advances in technology, specifications are subject to change without notice. 12/30/2013 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: [email protected] Page 2 of 5 Rev A DCMCU2 SERIES 2 Watt DC/DC Power Converters DERATING CURVE MECHANICAL DRAWING 12/30/2013 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: [email protected] Page 3 of 5 Rev A DCMCU2 SERIES 2 Watt DC/DC Power Converters TEST CONFIGURATIONS Peak-to-Peak Output Noise Measurement Test Use a 0.47µF ceramic 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. DESIGN & FEATURE CONSIDERATIONS Remote On/Off Negative logic remote on/off turns the module OFF during a logic high voltage on the remote on/off pin and ON 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 terminal. A logic high is 2~4mA current applied via 1KΩ resistor. A logic low is open circuit or high impedance. Maximum Capacitive Load The DCMCU2 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. 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. At the point of current-limit inception, the unit shifts from voltage control to current control. The unit operates normally once the output current is brought back into its specified range. 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. A 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 4.7µF for 12VDC nominal input models and 2.2µF for 24VDC and 48VDC nominal input models. Output Ripple Reduction A good quality low ESR capacitor placed as close as possible across the load will give the best ripple and noise performance. To reduce output ripple, it is recommended to use 3.3µF capacitors at the output. 12/30/2013 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: [email protected] Page 4 of 5 DCMCU2 SERIES 2 Watt DC/DC Power Converters Rev A DESIGN & FEATURE CONSIDERATIONS 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 measurements obtained in a test setup. MODEL NUMBER SETUP DCMCU 2 - Series Name Output Power 2: 2 Watts 24 S 12 Input Voltage No. of Outputs Output Voltage S: Single Output 3.3: 3.3 VDC 12: 4.5 – 18 VDC 24: 9 – 36 VDC 05: 5 VDC 48: 18 – 75 VDC 12: 12 VDC 15: 15 VDC D: Dual Output 05: ±5 VDC 12: ±12 VDC 15: ±15 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: Toll Free: Fax: E-mail: Web: Address: 12/30/2013 (603)778-2300 (888)597-9255 (603)778-9797 [email protected] www.wallindustries.com 37 Industrial Drive Exeter, NH 03833 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: [email protected] Page 5 of 5