MKW2500 / MKW2500A Series 15 Watts 2 :1 Wide Input Range DC/DC Converters Single and Dual Outputs Key Features y y y y y y y y y High Efficiency up to 86% 2:1 Input Range I / O Isolation 1500VDC Short Circuit Protected Industry Standard Pinout Six-Side Shielded Case EMI Complies With EN55002 Class A (Only For MKW2500A Series) Remote on/off Control (Optional) MTBF > 700,000 Hours Minmax's MKW2500 series, comprising 18 different models, has been conceived as an applications 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 2 x 1 x 0.4 inch package, with efficiency as high as 86%, the MKW2500 has wide input ranges of 9-18VDC, 18-36VDC and 36-75VDC, and is available in output voltages of 3.3V, 5.1V, 12V, 15V, {12V and {15V. 1500 VDC Other feathers include continuous short circuit protection, remote on/off,six-side shieled case and EN55022 level A conducted noise compliance minimize design-in time,cost and eliminate the need for external components. I/O Isolation 2:1 High Power Density Wide Range More Power EMI EN55022 Remote on/off Block Diagram Single Output +Vin Dual Output +Vo LC Filter +Vin +Vo LC Filter Com. -Vo -Vin 1 PWM Isolation Ref.Amp -Vo -Vin MINMAX PWM Isolation Ref.Amp 2004/REV:4 MKW2500 / MKW2500A Series Model Selection Guide Model Number MKW2521 MKW2522 MKW2523 MKW2524 MKW2526 MKW2527 MKW2531 MKW2532 MKW2533 MKW2534 MKW2536 MKW2537 MKW2541 MKW2542 MKW2543 MKW2544 MKW2546 MKW2547 Input Voltage Output Voltage VDC VDC 3.3 5.1 12 15 {12 {15 3.3 5.1 12 15 {12 {15 3.3 5.1 12 15 {12 {15 12 ( 9 ~ 18 ) 24 ( 18 ~ 36 ) 48 ( 36 ~ 75 ) Output Current Max. mA 3000 2950 1250 1000 {625 {500 3000 2950 1250 1000 {625 {500 3000 2950 1250 1000 {625 {500 Min. mA 300 295 125 100 {62.5 {50 300 295 125 100 {62.5 {50 300 295 125 100 {62.5 {50 Efficiency @Max. Load @No Load mA (Typ.) mA (Typ.) 1056 1529 1452 30 1452 1452 1452 528 764 726 20 726 726 726 264 382 363 10 363 363 363 @Max. Load % (Typ.) 78 82 86 86 86 86 78 82 86 86 86 86 78 82 86 86 86 86 Note : 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 Input Current Min. -0.7 -0.7 -0.7 ----- Max. 25 50 100 260 5,000 Unit VDC VDC VDC ] mW Exceeding these values can damage the module.These are not continuous operating ratings. 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 devices; however they may not meet all listed specifications. 6. All DC/DC converters should be externally fused at the front end for protection. Environmental Specifications Parameter Operating Temperature Operating Temperature Storage Temperature Humidity Cooling RFI 2004/REV:4 Conditions Ambient Case 7. Other input and output voltage may be available, please contact factory. Min. Max. -40 +60 -40 +100 -50 +125 --95 Free-Air Convection Six-Side Shielded Metal Case Unit ] ] ] % MINMAX 8.To order the converter with Remote on/off function ,please add suffix - RC ( EX : MK2521-RC ) 9. An optional internal filter is available. When the filter is added, the MKW2500 will meet EN55022-A. Add the suffix " A" to the model number, e.g. MKW2521A. 10. Specifications subject to change without notice. 2 MKW2500 / MKW2500A Series Input Specifications Parameter Start Voltage Under Voltage Shortdown Model 12V Input Models 24V Input Models 48V Input Models 12V Input Models Min. 8 15 30 7 Typ. 8.5 17 33 8 Max. 9 18 36 8.5 24V Input Models 48V Input Models 13 25 --- 15 29 --- 17 34 1 A --- --- 3500 mW Reverse Polarity Input Current Short Circuit Input Power Input Filter All Models Unit VDC Pi Filter Output Specifications Parameter Output Voltage Accuracy Output Voltage Balance Conditions Dual Output Balance Load Min. ----- Typ. {1.0 {0.5 Max. {2.0 {2.0 Unit % % Line Regulation Load Regulation Ripple & Noise (20MHz) Vin=Min. to Max. Io=10% to 100% ------- {0.1 {0.5 55 {0.5 {1.0 80 % % mV P-P Ripple & Noise (20MHz) Ripple & Noise (20MHz) Over Power Protection Over Line,Load & Temp ----120 ------- 100 15 --- mV P-P mV rms. % 300 {2 {0.01 500 {4 {0.02 uS % %/] Transient Recovery Time Transient Response Deviation Temperature Coefficient Output Short Circuit ------Continuous 25% Load Step Change General Specifications Parameter Isolation Voltage Isolation Test Voltage Isolation Resistance Isolation Capacitance Switching Frequency MTBF Conditions 60 Seconds Flash Tested for 1 Second 500VDC Min. 1500 1650 1000 Typ. ------- Max. ------- Unit VDC VDC M[ 100KHz,1V --290 700 1200 330 --- 1500 400 --- pF KHz K Hours Min. Typ. 2.5 to 5.5VDC or Open Circuit -0.7 ------- Max. Unit 0.8 10 VDC mA --------Referenced to Negative Input 50 -1 uA mA MIL-HDBK-217F @ 25], Ground Benign Remote On/Off Control Parameter Supply On Supply Off Standby Input Current Control Input Current ( on ) Control Input Current ( off ) Control Common 3 Conditions MINMAX 2004/REV:4 MKW2500 / MKW2500A Series Capacitive Load Models by Vout Maximum Capacitive Load 3.3V 470 5.1V 470 12V 470 15V 470 {12V # 220 {15V # 220 Unit uF Note: # For each output . Input Fuse Selection Guide 12V Input Models 3000mA Slow - Blow Type 24V Input Models 1500mA Slow - Blow Type 48V Input Models 750mA Slow - Blow Type Input Voltage Transient Rating 150 140 130 120 48VDC Input Models 110 Vin ( VDC ) 100 90 80 70 24VDC Input Models 60 50 40 12VDC Input Models 30 20 10 0 10uS 2004/REV:4 100uS 1mS MINMAX 10mS 100mS 4 100 100 90 90 Efficiency (%) Efficiency (%) MKW2500 / MKW2500A Series 80 70 60 80 70 60 50 50 Low Nom High Low Nom Input Voltage (V) Input Voltage (V) Efficiency vs Input Voltage ( Single Output ) Efficiency vs Input Voltage ( Dual Output ) 90 100 80 90 80 Efficiency (%) 70 Efficiency (%) High 60 50 70 60 50 40 30 40 10 40 20 60 80 30 100 Load Current (%) 20 40 60 80 100 Load Current (%) Efficiency vs Output Load ( Single Output ) 100 Efficiency vs Output Load ( Dual Output ) 400LFM 100LFM 80 Output Power (%) 10 200LFM Natural convection 60 40 20 0 -40 50 60 70 90 80 Ambient Temperature 100 110 ] Derating Curve 5 MINMAX 2004/REV:4 MKW2500 / MKW2500A Series Test Configurations Overcurrent Protection Input Reflected-Ripple Current Test Setup 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. To Oscilloscope + + Battery +Vin Lin DC / DC Converter Current Probe Cin +Out -Vin Load Input Source Impedance -Out 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. 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. 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. + +Vin +Out Single Output DC / DC Converter Copper Strip Cout -Vin -Out +Vin +Out Dual Output DC / DC Converter Com. -Vin -Out Scope DC Power Source Resistive Load - +Vin + +Out DC / DC Converter Load Cin -Vin -Out Copper Strip Cout Scope Cout Scope Resistive Load 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. Negative logic remote on/off turns the module off during a logic low and on during a logic high. 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. 2004/REV:4 MINMAX 6 MKW2500 / MKW2500A 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. + +Vin +Out Single Output DC / DC Converter DC Power Source Cout - -Vin -Out + +Vin +Out Dual Output DC / DC Com. Converter DC Power Source - -Vin Load Cout Load -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. 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 7 50mm / 2in Air Flow DUT MINMAX 2004/REV:4 MKW2500 Series Mechanical Data Connecting Pin Patterns Top View ( 2.54 mm / 0.1 inch grids ) 5 Side 6 Dual Output 15.2 [0.60] 2 1.00[ Bottom 1 0.039] 4 20.30 [0.800] 3 Single Output 2.5 [0.1] 50.8 [2.00] 10.20 [0.402] 10.20 [0.402] 10.2 [0.40] 5.08 [0.200] 25.4 [1.00] Tolerance Pin 6.0 [0.24] Millimeters .X{0.25 .XX{0.25 {0.05 10.2 [0.40] Inches .XX{0.01 .XXX{0.01 {0.002 Pin Connections Pin 1 2 3 4 5 6 Physical Characteristics Single Output +Vin -Vin +Vout Dual Output +Vin -Vin +Vout No Pin Common -Vout -Vout Remote on/off (Optional) 50.8*25.4*10.2 mm 2.0*1.0*0.4 inches Case Size : Case Material Weight : Nickl-Coated Copper With Non-Conductive Baseplate : 32g Flammability : UL94V-0 Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electrical properties in high humidity environment and over a wide operating temperature range. The encapsulant and outer shell of the unit have UL94V-0 ratings. The leads are golden plated for better soldering. 2004/REV:4 MINMAX 8