Rev B ME Series 5600VDC I/O Isolation Single and Dual Outputs 5~6 Watt Medical DC/DC Converter FEATURES ● Efficiency up to 80% ● Low Leakage Current ● Single & Dual Outputs ● 5600VDC I/O Isolation ● Short Circuit Protection ● MTBF > 700,000 Hours ● Low Isolation Capacitance ● 2:1 Wide Input Voltage Range ● Operating Temperature: -40°C to +55°C ● Medical Safety Approval UL/cUL 60601-1 ● All I/O Clearance and Creepage Distance 2.0mm min. ● Complies with EN55022 Class A with External Coupling Capacitor Cio=1nF < Class B DESCRIPTION The ME series of medical approved (UL/cUL 60601-1) dc/dc converters are specially designed to provide ultra high levels of isolation (5600VDC) in a 24-pin DIP package. These converters operate over input voltage ranges of 9-18VDC, 18-36VDC, and 36-75VDC. This series also provides regulated single and dual output voltages of 5, 12, ±12, and ±15VDC. The -40°C to +55°C operating temperature makes this series of dc/dc converters ideal for data communication equipment, mobile battery driven equipment, distributed power systems, process/machine control equipment, telecommunications equipment, mixed analog/digital subsystems, computer peripheral systems, and industrial robot systems. These converters have a power rating of 6W and a typical full load efficiency of 80%. This series complies with EN55022 Class A conducted noise and radiated emissions with an external coupling capacitor Cio=1nF < Class B. The EN55022 Class A conducted noise compliance minimizes design time, cost, and eliminates the need for external filter components. All models are over load and short circuit protected. SPECIFICATIONS: ME 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 Nom Max Unit INPUT (Vin) 12V nominal input models 9 12 18 Input Voltage Range 24V nominal input models 18 24 36 VDC 48V nominal input models 36 48 75 12V nominal input models 7 8 9 Start Voltage 24V nominal input models 13 15 18 VDC 48V nominal input models 30 33 36 12V nominal input models 8.5 Under Voltage Shutdown 24V nominal input models 16 VDC 48V nominal input models 34 Short Circuit Input Power All models 3000 mW 12V nominal input models -0.7 25 Input Surge Voltage (1000ms) 24V nominal input models -0.7 50 VDC 48V nominal input models -0.7 100 Input Filter Pi Filter Leakage Current 240VAC, 60Hz 2 μA OUTPUT (Vo) Output Voltage See Table Output Voltage Accuracy ±0.5 ±1.0 % Output Voltage Balance Dual Output, Balanced Loads ±0.5 ±2.0 % Load Regulation Io = 25% to 100% ±0.5 ±1.0 % Line Regulation Vin = min. to max. ±0.3 ±0.5 % Output Power See Table Output Current Range See Table 5V output models 75 100 Ripple & Noise (20MHz) mVpk-pk Other output models 100 150 Ripple & Noise (20MHz) Over Line, Over Load, and Over Temperature 180 mVpk-pk Ripple & Noise (20MHz) 25 mVrms Transient Recovery Time 25% load step change 300 500 μs Transient Response Deviation 25% load step change ±3 ±6 % PROTECTION Over Load Protection 120 % Short Circuit Protection Continuous 12V nominal input models 1200mA slow-blow type Input Fuse Recommendation 24V nominal input models 600mA slow-blow type 48V nominal input models 300mA slow-blow type GENERAL Efficiency See Table Switching Frequency 150 KHz Isolation Voltage Rated 60 seconds 5600 VDC Isolation Voltage Test Flash Test for 1 second 6000 VDC Isolation Resistance 500VDC 1000 MΩ Isolation Capacitance 100KHz, 1V 7 13 pF Internal Power Dissipation 2500 mW Max. Capacitive Load See Table Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 ME Series 5600VDC I/O Isolation Single and Dual Outputs 5~6 Watt Medical DC/DC Converter Rev B SPECIFICATIONS (CONTINUED) 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 Nom Max Unit ENVIRONMENTAL Operating Temperature (Ambient) Ambient -40 +55 °C Operating Temperature (Case) Case -40 +95 °C Storage Temperature -40 +125 °C Over Temperature Protection Case Temperature, automatic 107 112 117 °C Lead Temperature 1.5mm from case for 10 seconds 260 °C Humidity 95 % Cooling Free air convection Temperature Coefficient ±0.02 ±0.05 %/°C MTBF MIL-HDBK-217F @ 25°C, Ground Benign 700,000 hours Conducted EMI EN55022 Class A PHYSICAL Weight 18 grams 1.25 x 0.8 x 0.47 inches Dimensions (L x W x H) 31.8 x 20.3 x 12.0 mm Case Material non-conductive black plastic Flammability UL94V-0 MODEL SELECTION GUIDES SINGLE OUTPUT MODELS Model Number Input Voltage ME12S5-1000W 12 VDC (9 ~ 18 VDC) ME12S12-500W ME24S5-1000W ME24S12-500W ME48S5-1000W ME48S12-500W 24 VDC (18 ~ 36 VDC) 48 VDC (36 ~ 75 VDC) Output Voltage Output Current 5 VDC 200 mA 1000 mA Min Max Input Current Reflected Output Power No Load Max Load Ripple Current 570 mA 30 mA 12 VDC 100 mA 500 mA 5 VDC 200 mA 1000 mA Efficiency Maximum (Typ) Capacitive Load 5W 75% 1000 μF 6W 78% 470 μF 5W 77% 1000 μF 60 mA 641 mA 278 mA 20 mA 30 mA 12 VDC 100 mA 500 mA 313 mA 6W 80% 470 μF 5 VDC 200 mA 1000 mA 139 mA 5W 77% 1000 μF 12 VDC 100 mA 6W 80% 470 μF 10 mA 500 mA 15 mA 156 mA DUAL OUTPUT MODELS Model Number ME12D12-250W ME12D15-200W ME24D12-250W ME24D15-200W ME48D12-250W ME48D15-200W Input Voltage 12 VDC (9 ~ 18 VDC) Output Voltage Output Current Min Max ±12 VDC ±50 mA ±250 mA Input Current Reflected Output Power No Load Max Load Ripple Current 30 mA 641 mA Efficiency Maximum (Typ) Capacitive Load 6W 78% 220 μF # 100mA ±15 VDC ±40 mA ±200 mA 30 mA 641 mA 6W 78% 220 μF # ±12 VDC ±50 mA ±250 mA 24 VDC (18 ~ 36 VDC) ±15 VDC ±40 mA ±200 mA 20 mA 313 mA 6W 80% 220 μF # 20 mA 313 mA 6W 80% 220 μF # ±12 VDC ±50 mA ±250 mA 48 VDC (36 ~ 75 VDC) ±15 VDC ±40 mA ±200 mA 10 mA 156 mA 6W 80% 220 μF # 10 mA 156 mA 6W 80% 220 μF # 50mA 25mA # For each output NOTES 1. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 2. The ME 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. 3. All DC/DC converters should be externally fused at the front end for protection. 4. Other input and output voltages may be available, please contact factory. *Due to advances in technology, specifications subject to change without notice. Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 ME Series 5600VDC I/O Isolation Single and Dual Outputs 5~6 Watt Medical DC/DC Converter Rev B BLOCK DIAGRAMS Single Output Dual Output INPUT VOLTAGE TRANSIENT RATING 150 140 130 48VDC Input Models 120 110 Vin ( VDC ) 100 90 80 24VDC Input Models 70 60 50 12VDC Input Models 40 30 20 10 0 10uS 100uS 1mS 10mS 100mS DERATING CURVES Derating Curve (5V Output Models Only) Derating Curve (For All Other Models) Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 ME Series 5600VDC I/O Isolation Single and Dual Outputs 5~6 Watt Medical DC/DC Converter Rev B MECHANICAL DRAWING Unit: inches (mm) PIN CONNECTIONS Pin Single Output Dual Output 1 +Vin +Vin 11 No Pin Common 12 -Vout No Pin 13 +Vout -Vout 15 No Pin +Vout 23 -Vin -Vin 24 -Vin -Vin 1. Tolerance: X.X±0.25 (X.XX±0.01) X.XX±0.13 (X.XXX±0.005) 2. Pin: ±0.05 (±0.002) Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 ME Series 5600VDC I/O Isolation Single and Dual Outputs 5~6 Watt Medical DC/DC Converter Rev B 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 10μF for the 12V input models, 4.7μF for the 24V input models, and a 2.2μF for the 48V input models. + +Vin + DC Power Source +Out DC / DC Converter Load Cin - -Vin -Out Maximum Capacitive Load The ME Series has a limit of connected capacitance at the output. The power module may operate in current limiting mode during start-up, which affects the ramp-up and the startup time. Connect capacitors at the point of load for best performance. The maximum capacitive load can be found in the “Output Voltage / Current Rating Chart” on page 2. 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 Single Output DC / DC Converter -Vin Copper Strip Cout -Out +Vin Resistive Scope Load +Out Copper Strip Cout Dual Output DC / DC Converter Com. -Vin -Out Resistive Load Cout Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Scope Scope ME Series 5600VDC I/O Isolation Single and Dual Outputs 5~6 Watt Medical DC/DC Converter Rev B 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 a 3.3μF capacitor at the output. + +Vin Single Output DC / DC Converter DC Power Source - + +Out -Vin +Vin Dual Output DC / DC Com. Converter DC Power Source Cout Load - -Out +Out -Vin -Out Cout Load 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 95°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 Electromagnetic Emission EN 55022 < A Conducted and radiated emissions < A with external coupling capacitor Cio=1nF < B 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