® MKW20M SERIES DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety FEATURES ►Industrial Standard 2" X 1" Package ►Wide 2:1 Input Voltage Range ►Fully Regulated Output Voltage ►I/O Isolation 4200VAC with Reinforced Insulation, rated for 300VAC Working Voltage ►Low Leakage Current < 5µA ►Operating Temp. Range -40℃ to +80℃ ►No Min. Load Requirement ►Overload/Voltage and Short Circuit Protection ►Conducted EMI meets EN55022 Class A & FCC Level A ►UL/cUL/IEC/EN 60950-1 Safety Approval ►Medical Safety meets 2xMOPP per 3rd Edition of IEC/EN 60601-1 & ANSI/AAMI ES60601-1(Pending) PRODUCT OVERVIEW The MINMAX MKW20M series is a new range of high performance 20W isolated dc-dc converter in a compact 2"x1" package which specifically design for medical applications. The I/O isolation is specified for 4200VACrms with reinforced insulation, which rated for 300VAC working voltage. All 15 models available for 12, 24, 48VDC with wide 2:1 input voltage range and tight output regulation. Further features include over current, short circuit protection, no min. load requirement and EMI meets EN55022 class A. The MKW20M series offer a economical solution for demanding applications in industrial and medical instrumentation requesting a certified supplementary or reinforced insulation system to comply with industrial or latest medical safety standards. Model Selection Guide Model Input Output Number Voltage Voltage (Range) VDC MKW20-12S05M MKW20-12S051M MKW20-12S12M MKW20-12D12M MKW20-12D15M MKW20-24S05M MKW20-24S051M MKW20-24S12M MKW20-24D12M MKW20-24D15M MKW20-48S05M MKW20-48S051M MKW20-48S12M MKW20-48D12M MKW20-48D15M VDC 5 5.1 12 ±12 ±15 5 5.1 12 ±12 ±15 5 5.1 12 ±12 ±15 12 (9 ~ 18) 24 (18 ~ 36) 48 (36 ~ 75) Output Current Input Current Reflected Over Max. capacitive Ripple Voltage Load Max. @Max. Load @No Load Current Protection mA 4000 4000 1670 ±840 ±670 4000 4000 1670 ±840 ±670 4000 4000 1670 ±840 ±670 mA(typ.) 1938 1977 1876 1888 1882 958 977 938 933 941 473 483 469 477 471 mA (typ.) mA(typ.) VDC 6.2 6.2 15 ±15 ±18 6.2 6.2 15 ±15 ±18 6.2 6.2 15 ±15 ±18 20 100 15 50 10 30 Efficiency (typ.) @Max. Load μF 6800 1160 590# 380# 6800 1160 590# 380# 6800 1160 590# 380# % 86 86 89 89 89 87 87 89 90 89 88 88 89 88 89 # For each output Input Specifications Parameter Input Surge Voltage (100 ms max.) Start-Up Threshold Voltage Under Voltage Shutdown Start Up Time Input Filter Power Up E-mail:[email protected] 2015/05/22 P5 Model 12V Input Models 24V Input Models 48V Input Models Min. -0.7 -0.7 -0.7 12V Input Models 24V Input Models 48V Input Models 12V Input Models 24V Input Models 48V Input Models Nominal Vin and Constant Resistive Load All Models --------------- Tel:886-6-2923150 Page 1 of 5 Typ. Max. 25 --50 --100 ----9 --18 --36 7.5 --15 --33 ----30 Internal Pi Type Unit VDC ms ® MKW20M SERIES DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety Output Specifications Parameter Output Voltage Setting Accuracy Output Voltage Balance Line Regulation Conditions Min. Typ. ----Dual Output, Balanced Loads ----Vin=Min. to Max. @Full Load ----Single Output ----Io=0% to 100% Dual Output ----No minimum Load Requirement 0-20 MHz 5V & 5.1Vo Measured with a --50 Bandwidth 12V, ±12V, ±15Vo MLCC : 4.7uF --100 ----25% Load Step Change(2) --±3 ----Hiccup --150 Hiccup Mode 0.7 Hz typ. Automatic Recovery Load Regulation Minimum Load Ripple & Noise Transient Recovery Time Transient Response Deviation Temperature Coefficient Over Load Protection Short Circuit Protection Max. ±1.0 ±2.0 ±0.5 ±0.5 ±1.0 Unit %Vnom. % % % % ----300 ±5 ±0.02 --- mV P-P mV P-P μsec % %/℃ % Isolation, Safety Standards Parameter I/O Isolation Voltage Leakage Current I/O Isolation Resistance I/O Isolation Capacitance Conditions Min. Typ. Max. Reinforced Insulation, Rated For 60 Seconds 4200 ----240VAC, 60Hz ----5 500 VDC 10 ----100KHz, 1V ----60 UL/cUL60950-1, CSA C22.2 No. 60950-1 ANSI/AAMI ES60601-1, CAN/CSA-C22.2 No. 60601-1 IEC/EN 60950-1, IEC/EN 60601-1 3rd Edition 2xMOPP IEC60950-1 CB report, UL/cUL 60950-1 certificate IEC 60601-1 3rd Edition CB Report, ANSI/AAMI ES60601-1 2xMOPP certificate Safety Standards Approvals(Pending) Unit VACrms μA GΩ pF General Specifications Parameter Switching Frequency MTBF(calculated) Conditions MIL-HDBK-217F@25℃, Ground Benign Min. --TBD Typ. 285 --- Max. ----- Unit KHz Hours Environmental Specifications Parameter Operating Ambient Temperature Range Natural Convection (6) Nominal Vin, Load 100% Inom. (for Power Derating see relative Derating Curves) Thermal Impedance Case Temperature Storage Temperature Range Humidity (non condensing) Altitude Cooling Lead Temperature (1.5mm from case for 10Sec.) Conditions/Models MKW20-24D12M MKW20-12S12M, MKW20-12D12M, MKW20-12D15M MKW20-24S12M, MKW20-24D15M, MKW20-48S12M MKW20-48D15M MKW20-48S05M, MKW20-48S051M, MKW20-48D12M MKW20-24S05M, MKW20-24S051M MKW20-12S05M, MKW20-12S051M Natural Convection Min. Max. 66 Unit 62 ℃ -40 13.0 ---50 ----- 58 55 51 --+95 +125 95 4000 ℃/W ℃ ℃ % rel. H m --- 260 ℃ Natural Convection EMC Specifications Parameter EMI Conduction EN60601-1-2, EN55024 ESD Radiated immunity Fast transient (5) Surge (5) Conducted immunity EMS E-mail:[email protected] 2015/05/22 P5 Tel:886-6-2923150 Page 2 of 5 Standards & Level EN55011, EN55022, FCC part 15 EN61000-4-2 Air ± 8kV , Contact ± 6kV EN61000-4-3 10V/m EN61000-4-4 ±2kV EN61000-4-5 ±1kV EN61000-4-6 10Vrms Performance Class A A A A A A ® MKW20M SERIES DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety Power Derating Curve 100 100 80 80 Natural Convection 20LFM 60 60 40 40 20 20 0 0 ~ -40 Natural Convection 20LFM 0 20 40 60 80 100 110 ~ -40 0 20 40 60 100 80 Natural Convection 20LFM 40 20 0 ~ -40 0 20 40 60 80 100 110 Ambient Temperature C MKW20-48S05M, MKW20-48S051M, MKW20-48D12M MKW20-24S05M, MKW20-24S051M MKW20-12S05M, MKW20-12S051M Notes 1 Specifications typical at Ta=+25℃, resistive load, nominal input voltage and rated output current unless otherwise noted. 2 Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 3 We recommend to protect the converter by a slow blow fuse in the input supply line. 4 Other input and output voltage may be available, please contact factory. 5 To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required.Suggested capacitor:TBD 6 That “natural convection” is about 20LFM but is not equal to still air (0 LFM). 7 Specifications are subject to change without notice. E-mail:[email protected] 2015/05/22 P5 Tel:886-6-2923150 Page 3 of 5 100 110 MKW20-12S12M, MKW20-12D12M, MKW20-12D15M, MKW20-24S12M, MKW20-24D15M, MKW20-48S12M, MKW20-48D15M MKW20-24D12M 60 80 Ambient Temperature C Ambient Temperature C ® MKW20M SERIES DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety Package Specifications Mechanical Dimensions Pin Connections 5.08 [0.20] 5.08 [0.20] Bottom View 5 4 Pin Single Output Dual Output 1 +Vin +Vin 2 -Vin -Vin 3 +Vout +Vout 4 No Pin Common 5 -Vout -Vout 50.8 [2.00] 1.00 [ 0.04] 1 45.72 [1.80] 2 12.0 [0.47] ►All 3 dimensions in mm (inches) ►Tolerance: X.X±0.5 10.16 [0.40] 2.54 [0.10] 10.16 [0.40] 25.4 [1.00] Physical Characteristics Case Size : 50.8x25.4x12.0mm (2.0x1.0x0.47 inches) Case Material : Non-Conductive Black Plastic (flammability to UL 94V-0 rated) Pin Material : Tinned Copper Weight : TBD E-mail:[email protected] 2015/05/22 P5 Tel:886-6-2923150 Page 4 of 5 (X.XX±0.02) X.XX±0.25 ( X.XXX±0.01) ►Pin diameter 1.0 ±0.05 (0.04±0.002) ® MKW20M SERIES DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety Test Setup Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with a 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. To Oscilloscope + + Battery +Vin Lin Current Probe Cin +Out DC / DC Converter -Vin Load -Out Peak-to-Peak Output Noise Measurement Test Use a Cout 4.7μF ceramic capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20 MHz. Position the load between 50 mm and 75 mm from the DC/DC Converter. +Vin +Out Copper Strip Single Output DC / DC Converter -Vin Cout -Out Scope Resistive Load Copper Strip +Vin +Out Copper Strip Dual Output DC / DC Converter Com. Copper Strip -Vin -Out Scope Cout Cout Resistive Load Scope Copper Strip Technical Notes Overload Protection To provide hiccup mode protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an unlimited duration. Overvoltage Protection The output overvoltage 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 the output data. 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 on the input to insure startup. By using a good quality low Equivalent Series Resistance (ESR < 1.0Ω at 100 kHz) capacitor of a 10μF for the 12V input devices and a 4.7μF for the 24V input devices and a 2.2μF for the 48V devices, capacitor mounted close to the power module helps ensure stability of the unit. + DC Power Source +Vin + +Out DC / DC Converter Load Cin - -Vin -Out 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. + +Vin DC Power Source - +Out Single Output DC / DC Converter -Vin + Cout +Vin DC Power Source Load -Out - +Out Dual Output Com. DC / DC Converter -Vin -Out Cout Load Load Cout Maximum Capacitive Load The MKW20M series has limitation of maximum connected capacitance on the output. The power module may operate in current limiting mode during start-up, affecting the ramp-up and the startup time. Connect capacitors at the point of load for best performance. The maximum capacitance can be found in the 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 95℃. The derating curves are determined from measurements obtained in a test setup. Position of air velocity probe and thermocouple 15mm / 0.6in 50mm / 2in Air Flow DUT 18, Sin Sin Road, An-Ping Industrial District, Tainan 702, Taiwan Tel: 886-6-2923150 Fax: 886-6-2923149 E-mail: [email protected] Minmax Technology Co., Ltd. 2015/05/22 P5 Page 5 of 5