MKW2537

MKW2500 Series 15W, Wide Input Range, Single & Dual Output DC/DC Converters Key Features Efficiency up to 86% 1500VDC Isolation MTBF > 700,000 Hours 2:1 Wide Input Range CSA1950 Safety Approval Complies with EN55022 Class A Six-Sided Shielding Remote On/Off Control UL 94V-0 Package Material Internal SMD Construction Minmax's MKW2500 series, comprising 21 different models, has been conceived as an application specific range of DC/DC converters, specially addressing data communication equipments, mobile battery driven equipments, distributed power systems, telecommunication equipments, mixed analog/digital subsystems, process/machine control equipments, computer peripheral systems and industrial robot systems. Packing up to 15W of power into a 2x1x0.4 inch package, with efficiency as high as 86%, the MKW2500 has wide input ranges of 9-18VDC, 18-36VDC and 36-75VDC which is available in output voltages of 3.3V, 5V, 5.1V, 12V, 15V, {12V and {15VDC. Other feathers include continuous short circuit protection, remote on/off, six-sided shielded case and EN55022 Class A conducted noise compliance minimize design-in time, cost and eliminate the need for external filtering. I/O Isolation Wide Range 2:1 High Power Density More Power 1500 VDC EMI EN55022 Remote on/off Block Diagram Single Output Dual Output +Vin LC Filter +Vo +Vin LC Filter +Vo Com. -Vo PWM Isolation Ref.Amp PWM Isolation Ref.Amp -Vo -Vin -Vin 1 MINMAX REV:0 2005/04 MKW2500 Series Model Selection Guide Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current mA (Typ.) Efficiency VDC MKW2521 MKW2522 MKW2523 MKW2524 MKW2526 MKW2527 MKW2529 MKW2531 MKW2532 MKW2533 MKW2534 MKW2536 MKW2537 MKW2539 MKW2541 MKW2542 MKW2543 MKW2544 MKW2546 MKW2547 MKW2549 12 ( 9 ~ 18 ) 24 ( 18 ~ 36 ) 48 ( 36 ~ 75 ) VDC 3.3 5 12 15 {12 {15 5.1 3.3 5 12 15 {12 {15 5.1 3.3 5 12 15 {12 {15 5.1 Max. mA 3000 3000 1250 1000 {625 {500 3000 3000 3000 1250 1000 {625 {500 3000 3000 3000 1250 1000 {625 {500 3000 Min. mA 300 300 125 100 {62.5 {50 300 300 300 125 100 {62.5 {50 300 300 300 125 100 {62.5 {50 300 @Max. Load @No Load mA (Typ.) mA (Typ.) 1057 1524 1452 1452 1452 1452 1574 528 762 726 726 726 726 787 264 381 363 363 363 363 393 30 50 20 40 10 30 @Max. Load % (Typ.) 78 82 86 86 86 86 81 78 82 86 86 86 86 81 78 82 86 86 86 86 81 Absolute Maximum Ratings Parameter 12VDC Input Models Input Surge Voltage 24VDC Input Models ( 1000 mS ) 48VDC Input Models Lead Temperature (1.5mm from case for 10 Sec.) Internal Power Dissipation Min. -0.7 -0.7 -0.7 ----Max. 25 50 100 260 5,000 Unit VDC VDC VDC ] mW Notes : 1. Specifications typical at Ta=+25], resistive load, nominal input voltage, 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. Ripple & Noise measurement bandwidth is 0-20 MHz. 4. These power converters require a minimum output loading to maintain specified regulation. 5. Operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed. Exceeding the absolute maximum ratings of the unit could cause damage. These are not continuous operating ratings. Environmental Specifications Parameter Operating Temperature Operating Temperature Storage Temperature Humidity Cooling RFI Conducted EMI Conditions Ambient Case Min. Max. -40 +60 -40 +100 -50 +125 --95 Free-Air Convection Six-Sided Shielded, Metal Case EN55022 Class A Unit ] ] ] % 6. All DC/DC converters should be externally fused at the front end for protection. 7. Other input and output voltage may be available, please contact factory. 8. To order the converter with Remote On/Off function, please add a suffix -RC (e.g. MKW2521-RC). 9. To order the converter with EN55022 Class A function, please add a suffix A (e.g. MKW2521A). 10. Specifications subject to change without notice. REV:0 2005/04 MINMAX 2 MKW2500 Series Input Specifications Parameter Start Voltage Model 12V Input Models 24V Input Models 48V Input Models Under Voltage Shutdown 12V Input Models 24V Input Models 48V Input Models Reverse Polarity Input Current Short Circuit Input Power Input Filter All Models Min. 8 15 30 7 13 25 ----Typ. 8.5 17 33 8 15 29 ----Pi Filter Max. 9 18 36 8.5 17 34 1 3500 A mW VDC Unit Output Specifications Parameter Output Voltage Accuracy Output Voltage Balance Line Regulation Load Regulation Ripple & Noise (20MHz) Ripple & Noise (20MHz) Ripple & Noise (20MHz) Over Power Protection Transient Recovery Time Transient Response Deviation Temperature Coefficient Output Short Circuit 25% Load Step Change Over Line, Load & Temp Dual Output, Balanced Loads Vin=Min. to Max. Io=10% to 100% Conditions Min. --------------120 ------Continuous Typ. {1.0 {0.5 {0.1 {0.5 55 ------300 {2 {0.01 Max. {2.0 {2.0 {0.5 {1.0 80 100 15 --500 {4 {0.02 Unit % % % % mV P-P mV P-P mV rms % uS % %/] General Specifications Parameter Isolation Voltage Rated Isolation Voltage Test Isolation Resistance Isolation Capacitance Switching Frequency MTBF MIL-HDBK-217F @ 25], Ground Benign Conditions 60 Seconds Flash Tested for 1 Second 500VDC 100KHz,1V Min. 1500 1650 1000 --290 700 Typ. ------1200 330 --Max. ------1500 400 --Unit VDC VDC M[ pF KHz K Hours Remote On/Off Control Parameter Supply On Supply Off Standby Input Current Control Input Current ( on ) Control Input Current ( off ) Control Common Vin-RC=5.0V Vin-RC=0V Conditions Min. -0.7 ------Typ. --------Max. 0.8 10 50 -1 Unit VDC mA uA mA 2.5 to 5.5VDC or Open Circuit Referenced to Negative Input 3 MINMAX REV:0 2005/04 MKW2500 Series Capacitive Load Models by Vout Maximum Capacitive Load # For each output 3.3V 470 5V 470 5.1V 470 12V 470 15V 470 {12V # 220 {15V # 220 Unit uF Input Fuse Selection Guide 12V Input Models 2500mA Slow - Blow Type 24V Input Models 1250mA Slow - Blow Type 48V Input Models 750mA Slow - Blow Type Input Voltage Transient Rating 150 140 130 120 110 100 Vin ( VDC ) 90 80 70 60 50 40 30 20 10 0 10uS 100uS 1mS 10mS 100mS 12VDC Input Models 24VDC Input Models 48VDC Input Models REV:0 2005/04 MINMAX 4 MKW2500 Series 100 100 90 Efficiency (%) Low Nom Input Voltage (V) High 90 Efficiency (%) 80 80 70 70 60 50 Low Nom Input Voltage (V) High 60 50 Efficiency vs Input Voltage ( Single Output ) Efficiency vs Input Voltage ( Dual Output ) 90 80 70 60 50 40 30 100 90 80 Efficiency (%) 70 60 50 40 Efficiency (%) 10 20 40 60 Load Current (%) 80 100 30 10 20 40 60 Load Current (%) 80 100 Efficiency vs Output Load ( Single Output ) Efficiency vs Output Load ( Dual Output ) 100 80 Output Power (%) 100LFM Natural convection 400LFM 200LFM 60 40 20 0 -40 〜 50 60 70 80 ] 90 100 110 Ambient Temperature Derating Curve 5 MINMAX REV:0 2005/04 MKW2500 Series Test Configurations Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with a inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0[ 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 + Lin Current Probe +Vin +Out Load Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure current limiting 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. 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 < 1.0[ at 100 KHz) capacitor of a 22uF for the 12V input devices and a 6.8uF for the 24V and 48V devices. DC / DC Converter -Vin -Out Cin Peak-to-Peak Output Noise Measurement Test Use a Cout 0.47uF 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 Single Output DC / DC Converter -Vin -Out +Out Copper Strip Cout Resistive Scope Load + DC Power Source + Cin +Vin DC / DC Converter -Vin +Out Load -Out +Vin Dual Output DC / DC Converter -Vin +Out Com. Copper Strip Cout Cout Scope Resistive Load Scope -Out Design & Feature Considerations 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 power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the -Vin terminal. The switch can be an open collector or equivalent. A logic low is -0.7V to 0.8V. A logic high is 2.5V to 5.5V. The maximum sink current at on/off terminal during a logic low is -1 mA. The maximum allowable leakage current of the switch at on/off terminal (2.5 to 5.5V) is 50uA. REV:0 2005/04 MINMAX 6 MKW2500 Series 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 4.7uF capacitors at the output. + DC Power Source -Vin +Vin Single Output DC / DC Converter -Out +Out Cout Load + DC Power Source - +Vin +Out Dual Output DC / DC Com. Converter Cout Load -Vin -Out Maximum Capacitive Load The MKW2500 series has limitation 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 optimum performance we recommend 220uF maximum capacitive load for dual outputs and 470uF capacitive load for single outputs. 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 100°C. The derating curves are determined from measurements obtained in an experimental apparatus. Position of air velocity probe and thermocouple 15mm / 0.6in 50mm / 2in Air Flow DUT 7 MINMAX REV:0 2005/04 MKW2500 Series Mechanical Dimensions 10.20 [0.402] 10.20 [0.402] 2.5 [0.1] Top View ( 2.54 mm / 0.1 inch grids ) Connecting Pin Patterns Single Output 20.30 [0.800] 0.039] 3 4 5 1 2 6 1.00[ Bottom Side 50.8 [2.00] Dual Output 15.2 [0.60] 5.08 [0.200] 10.2 [0.40] 6.0 [0.24] 10.2 [0.40] 25.4 [1.00] Tolerance Millimeters X.X{0.25 X.XX{0.13 {0.05 Inches X.XX{0.01 X.XXX{0.005 {0.002 Pin Pin Connections Pin 1 2 3 4 5 6 Single Output +Vin -Vin +Vout No Pin -Vout Dual Output +Vin -Vin +Vout Common -Vout Physical Characteristics 50.8*25.4*10.2 mm 2.0*1.0*0.4 inches Case Size : Case Material Weight Flammability : Metal With Non-Conductive Baseplate : 32g : UL94V-0 Remote On/Off (Optional) The MKW2500 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical characteristics over a wide temperature range or in high humidity environments. The encapsulant and unit case are both rated to UL 94V-0 flammability specifications. Leads are tin plated for improved solderability. REV:0 2005/04 MINMAX 8