Rev B FEATURES ● Low Cost ● RoHS Compliant ● Efficiency up to 75% ● Low Leakage Current ● 4000VAC I/O Isolation MDHU100 Series 4000VAC I/O Isolation Single and Dual Outputs 2 Watt Medical DC/DC Converter ● Single and Dual Outputs ● MTBF > 2,000,000 Hours ● Internal SMT Construction ● Operating Temperature: -25°C to +60°C ● Medical & Industrial Safety: UL60601-1 and UL60950-1 DESCRIPTION The MDHU100 series power modules are 2W DC/DC converters that are specially designed to provide ultra-high levels of isolation (4000VAC) in a miniature DIP package. These converters operate over input voltage ranges of 4.5~5.5VDC, 10.8~13.2VDC, and 21.6~26.4VDC. This series also has single and dual output voltages of 5, 12, 15, ±12, and ±15VDC. These converters have both medical (UL60601-1) and industrial (UL60950-1) safety approvals and are useful for a variety of applications including distributed power systems, mixed analog/digital subsystems, portable test equipment, local power networks, and battery-backed systems. SPECIFICATIONS: MDHU100Series 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 INPUT (Vin) Input Voltage Range Reverse Polarity Input Current Input Surge Voltage (1000ms) Input Filter Leakage Current TEST CONDITIONS Min Nom 5V nominal input models 12V nominal input models 24V nominal input models All models 5V nominal input models 12V nominal input models 24V nominal input models All models 240VAC, 60Hz 4.5 10.8 21.6 5 12 24 Max Unit 5.5 13.2 26.4 0.3 9 18 30 Internal Capacitor 2 -0.7 -0.7 -0.7 VDC A VDC μA OUTPUT (Vo) Output Voltage Output Voltage Accuracy Output Voltage Balance Load Regulation Line Regulation Output Power Output Current Range Ripple & Noise (20MHz) Ripple & Noise (20MHz) Ripple & Noise (20MHz) See Rating Chart ±2.0 ±4.0 ±0.1 ±1.0 See Rating Chart ±1.2 ±1.5 2 See Rating Chart 100 150 200 15 Dual Output, Balanced Loads Io = 20% to 100% Vin = min. to max. Over Line, Over Load, and Over Temperature % % % W mVpk-pk mVpk-pk mVrms PROTECTION Short Circuit Protection Input Fuse Recommendation 0.5 seconds max. 1000mA slow-blow type 500mA slow-blow type 200mA slow-blow type 5V nominal input models 12V nominal input models 24V nominal input models GENERAL Efficiency Switching Frequency Isolation Voltage Rated Isolation Voltage Test Isolation Resistance Isolation Capacitance Internal Power Dissipation Max. Capacitive Load 60 seconds Flash Test for 1 second 500VDC 100KHz, 1V 50 4000 6000 10 See Rating Chart 80 100 KHz VAC VDC GΩ pF mW 15 20 650 See Rating Chart ENVIRONMENTAL Operating Temperature (Ambient) Operating Temperature (Case) Storage Temperature Lead Temperature Humidity Cooling Temperature Coefficient MTBF Ambient Case -25 -25 -40 +60 +90 +125 260 95 Free air convection ±0.01 ±0.02 1.5mm from case for 10 seconds MIL-HDBK-217F @ 25°C, Ground Benign 2000 °C °C °C °C % %/°C Khours PHYSICAL Weight 0.18oz (5.1g) 0.94 x 0.54 x 0.34 inches 23.8 x 13.7 x 8.62 mm Non-conductive black plastic UL94V-0 Dimensions (L x W x H) Case Material Flammability SAFETY Industrial Approvals Medical Approvals UL60950-1 UL60601-1 Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 1 of 6 MDHU100 Series 4000VAC I/O Isolation Single and Dual Outputs 2 Watt Medical DC/DC Converter Rev B MODEL SELECTION GUIDE SINGLE OUTPUT MODELS Model Number Output Voltage 5 VDC 8mA 400mA 5 VDC (4.5 ~ 5.5 VDC) 12 VDC 3mA 165mA 15 VDC 2.5mA 5 VDC MDHU505N2 MDHU512N2 MDHU515N2 MDHU1205N2 MDHU1212N2 12 VDC (10.8 ~ 13.2 VDC) MDHU1215N2 MDHU2405N2 MDHU2412N2 Output Current Min Max Input Voltage 24 VDC (21.6 ~ 26.4 VDC) MDHU2415N2 Input Current No Load Max Load Max. Load Regulation Efficiency (Typ) Maximum Capacitive Load 606mA 12% 66% 330 μF 600mA 10% 66% 330 μF 133mA 605mA 10% 66% 330 μF 8mA 400mA 253mA 12% 66% 330 μF 12 VDC 3mA 165mA 250mA 10% 66% 330 μF 15 VDC 2.5mA 133mA 252mA 10% 66% 330 μF 5 VDC 8mA 400mA 126mA 12% 66% 330 μF 12 VDC 3mA 165mA 125mA 10% 66% 330 μF 15 VDC 2.5mA 133mA 126mA 10% 66% 330 μF Output Voltage Output Current Min Max Max. Load Regulation Efficiency (Typ) Maximum Capacitive Load 553mA 10% 72% 100 μF 542mA 10% 73% 100 μF 224mA 10% 74% 100 μF 60mA 30mA 15mA DUAL OUTPUT MODELS Model Number Input Voltage MDHU512ND2 5 VDC (4.5 ~ 5.5 VDC) Input Current No Load Max Load ±12 VDC ±1.5mA ±83mA ±15 VDC ±1mA ±66mA 12 VDC (10.8 ~ 13.2 VDC) MDHU1215ND2 ±12 VDC ±1.5mA ±83mA ±15 VDC ±1mA ±66mA 220mA 10% 75% 100 μF MDHU2412ND2 ±12 VDC ±1.5mA ±83mA 112mA 10% 74% 100 μF 110mA 10% 75% 100 μF MDHU515ND2 MDHU1212ND2 24 VDC MDHU2415ND2 (21.6 ~ 26.4 VDC) 60mA 30mA 15mA ±15 VDC ±1mA ±66mA NOTES 1. The MDHU100 series requires a minimum output loading to maintain specified regulations. Operation under no-load conditions will not damage these devices, however they may not meet all listed specifications. 2. All DC/DC converters should be externally fused at the front end for protection. 3. Other input and output voltages may be available, please contact factory. *Due to advances in technology, specifications are subject to change without notice. BLOCK DIAGRAMS Single Output Dual Output +Vo +Vo +Vin +Vin Bipolar Push-Pull Inverter Bipolar Push-Pull Inverter Com. -Vin -Vin -Vo Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 -Vo Page 2 of 6 MDHU100 Series 4000VAC I/O Isolation Single and Dual Outputs 2 Watt Medical DC/DC Converter Rev B Efficiency vs Input Voltage (Single Output) Efficiency vs Output Load (Single Output) Efficiency vs Input Voltage (Dual Output) Efficiency vs Output Load (Dual Output) Derating Curve Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 3 of 6 MDHU100 Series 4000VAC I/O Isolation Single and Dual Outputs 2 Watt Medical DC/DC Converter Rev B MECHANICAL DRAWING Unit: inches (mm) PIN CONNECTIONS PIN Single Output Dual Output 1 -Vin -Vin 7 NC NC 8 NC Common 9 +Vout +Vout 10 -Vout -Vout +Vin +Vin 16 NC: No Connection 1. Tolerance: X.X±0.25 [X.XX±0.01] X.XX±0.13 [X.XXX±0.005] 2. Pin: ±0.05 [±0.002] DESIGN & FEATURE CONSIDERATONS 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 2.2μF for the 5V input models, a 1.0μF for the 12V input models, and a 0.47μF for the 24V input models. + DC Power Source - +Vin + +Out DC / DC Converter Load Cin -Vin + -Out +Vin Single Output DC / DC Converter DC Power Source - Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 +Out -Vin Cout Load -Out Page 4 of 6 MDHU100 Series 4000VAC I/O Isolation Single and Dual Outputs 2 Watt Medical DC/DC Converter Rev B Maximum Capacitive Load The MDHU100 series has a limit 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. For optimal performance we recommend 100μF maximum capacitive load for dual outputs and 330μF capacitive load for single outputs. The maximum capacitance can be found in the Model Selection Guide. TEST CONFIGURATIONS 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. To Oscilloscope + + Battery +Vin Lin Cin Current Probe +Out DC / DC Converter -Vin Load -Out 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 Cout 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. +Vin +Out Copper Strip Single Output DC / DC Converter -Vin +Vin Cout -Out Scope Resistive Load Copper Strip Copper Strip +Out Scope Cout Dual Output DC / DC Converter Com. -Vin -Out Resistive Load Copper Strip Cout Scope Copper Strip 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. + Single Output DC / DC Converter DC Power Source - +Out +Vin -Vin + +Vin Dual Output Com. DC / DC Converter DC Power Source Cout -Out Load - +Out -Vin Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 -Out Cout Load Page 5 of 6 MDHU100 Series 4000VAC I/O Isolation Single and Dual Outputs 2 Watt Medical DC/DC Converter Rev B 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 90°C. The derating curves are determined from measurements obtained in an experimental apparatus. Position of air velocity probe and thermocouple 50mm / 2in 15mm / 0.6in Air Flow DUT COMPANY INFORMATION: Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development engineers will provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001-2000 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: (603)778-2300 (888)587-9255 (603)778-9797 [email protected] www.wallindustries.com 5 Watson Brook Rd. Exeter, NH 03833 Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 6 of 6