MKW2600 Series 15W, Ultra-Wide Input Range, Single & Dual Output DC/DC Converters Key Features y y y y y y y y y y Efficiency up to 86% 1500VDC Isolation MTBF > 700,000 Hours 4:1 Wide Input Range UL1950 Safety Approval Complies with EN55022 Class A Six-Sided Shielding Remote On/Off Control UL 94V-0 Package Material Internal SMD Construction Minmax's MKW2600 series, comprising 16 different models, has been conceived as an application specific range of DC/DC converters, specially addressing data communication equipments, mobile battery 4:1 High Power Density Wide Range More Power 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 MKW2600 has ultra-wide input ranges of 9-36VDC and 18-75VDC which is available in output voltages of 3.3V, 5V, 1500 VDC 5.1V, 12V, 15V, ±5V, ±12V and ±15VDC. Other feathers include continuous short circuit protection, remote on/off, six-sided shielded case and EN55022 Class A conducted noise I/O Isolation compliance minimize design-in time, cost and eliminate the need for EMI EN55022 Remote on/off external filtering. 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 REV:0 2005/04 MKW2600 Series Model Selection Guide Model Number MKW2621 MKW2622 MKW2623 MKW2624 MKW2625 MKW2626 MKW2627 MKW2629 MKW2631 MKW2632 MKW2633 MKW2634 MKW2635 MKW2636 MKW2637 MKW2639 Input Voltage Output Voltage VDC VDC 3.3 5 12 15 {5 {12 {15 5.1 3.3 5 12 15 {5 {12 {15 5.1 24 ( 9 ~ 36 ) 48 ( 18 ~ 75 ) Output Current Max. mA 3000 3000 1250 1000 1500 {625 {500 3000 3000 3000 1250 1000 1500 {625 {500 3000 Min. mA 300 300 125 100 150 {62.5 {50 300 300 300 125 100 150 {62.5 {50 300 @Max. Load @No Load mA (Typ.) mA (Typ.) 528 762 735 726 25 771 735 726 787 264 381 368 363 15 386 368 363 393 Reflected Ripple Current mA (Typ.) 40 30 Efficiency @Max. Load % (Typ.) 78 82 85 86 81 85 86 81 78 82 85 86 81 85 86 81 Notes : Absolute Maximum Ratings Parameter 24VDC Input Models Input Surge Voltage ( 1000 mS ) 48VDC Input Models Lead Temperature (1.5mm from case for 10 Sec.) Internal Power Dissipation Input Current Min. -0.7 -0.7 ----- Max. 50 100 260 5,000 Unit VDC VDC ] mW Exceeding the absolute maximum ratings of the unit could cause damage. 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 modules; however, they may not meet all specifications listed. 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 Conducted EMI REV:0 2005/04 Conditions Ambient Case Min. Max. -40 +60 -40 +100 -50 +125 --95 Free-Air Convection Six-Sided Shielded, Metal Case EN55022 Class A Unit ] ] ] % MINMAX 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. MKW2621-RC). 9. To order the converter with EN55022 Class A function, please add a suffix A (e.g. MKW2621A). 10. Specifications subject to change without notice. 2 MKW2600 Series Input Specifications Parameter Start Voltage Under Voltage Shutdown Model Min. Typ. Max. 24V Input Models 8 8.5 9 48V Input Models 15 17 18 24V Input Models 7 8 8.5 17 48V Input Models Reverse Polarity Input Current Short Circuit Input Power All Models Unit VDC 13 15 --- --- 1 A --- --- 3500 mW Input Filter Pi Filter Output Specifications Parameter Conditions Min. Typ. Max. Unit --- {1.0 {2.0 % Dual Output, Balanced Loads --- {0.5 {2.0 % Line Regulation Vin=Min. to Max. --- {0.1 {0.5 % Load Regulation Io=10% to 100% --- {0.5 {1.0 % --- 55 80 mV P-P Over Line, Load & Temp. --- --- 100 mV P-P Ripple & Noise (20MHz) --- --- 15 mV rms Over Power Protection 120 --- --- % Transient Recovery Time --- 300 500 uS Output Voltage Accuracy Output Voltage Balance Ripple & Noise (20MHz) Ripple & Noise (20MHz) Transient Response Deviation 25% Load Step Change Temperature Coefficient Output Short Circuit --- {2 {4 % --- {0.01 {0.02 %/] Continuous General Specifications Parameter Conditions Min. Typ. Max. Unit Isolation Voltage Rated 60 Seconds 1500 --- --- VDC Isolation Voltage Test Flash Tested for 1 Second 1650 --- --- VDC Isolation Resistance 500VDC 1000 --- --- M[ Isolation Capacitance 100KHz,1V --- 1200 1500 pF 290 330 400 KHz MIL-HDBK-217F @ 25], Ground Benign 700 --- --- K Hours Conditions Min. Typ. Max. Unit Switching Frequency MTBF Remote On/Off Control Parameter Supply On 2.5 to 5.5VDC or Open Circuit Supply Off -0.7 --- 0.8 VDC Standby Input Current --- --- 10 mA Control Input Current ( on ) Vin-RC=5.0V --- --- 50 uA Control Input Current ( off ) Vin-RC=0V --- --- -1 mA Control Common 3 Referenced to Negative Input MINMAX REV:0 2005/04 MKW2600 Series Capacitive Load Models by Vout 3.3V 5V 5.1V 12V 15V {5V # {12V # {15V # Unit Maximum Capacitive Load 470 470 470 470 470 220 220 220 uF # For each output Input Fuse Selection Guide 24V Input Models 48V Input Models 2500mA Slow - Blow Type 1250mA Slow - Blow Type Input Voltage Transient Rating 130 125 120 115 110 48VDC Input Models 105 ~ Vin ( VDC ) 100 80 75 70 65 24VDC Input Models 60 55 50 45 40 10uS REV:0 2005/04 100uS 1mS MINMAX 10mS 100mS 4 100 100 90 90 Efficiency (%) Efficiency (%) MKW2600 Series 80 70 80 70 60 60 50 Low Nom 50 High Low Nom Input Voltage (V) Input Voltage (V) Efficiency vs Input Voltage ( Single Output ) Efficiency vs Input Voltage ( Dual Output ) 90 90 80 80 70 70 Efficiency (%) Efficiency (%) High 60 50 40 60 50 40 30 10 20 40 60 Load Current (%) 80 100 30 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 REV:0 2005/04 MKW2600 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. 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 +Vin Lin Cin -Vin 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. +Out DC / DC Converter Current Probe Input Source Impedance Load -Out 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 10uF for the 24V and 48V input devices. 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 +Out Single Output DC / DC Converter -Vin -Out +Vin +Out Dual Output DC / DC Converter Com. -Vin -Out DC Power Source Copper Strip Cout + Scope 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. 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 MKW2600 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 MKW2600 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 7 50mm / 2in Air Flow DUT MINMAX REV:0 2005/04 MKW2600 Series Mechanical Dimensions 5 6 Dual Output 15.2 [0.60] 2 Side 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] Connecting Pin Patterns Top View ( 2.54 mm / 0.1 inch grids ) 10.2 [0.40] 5.08 [0.200] 25.4 [1.00] Tolerance Pin 6.0 [0.24] 10.2 [0.40] Millimeters Inches X.X{0.25 X.XX{0.01 X.XX{0.13 {0.05 X.XXX{0.005 {0.002 Pin Connections Physical Characteristics Pin Single Output Dual Output 1 +Vin +Vin 2 -Vin -Vin 3 +Vout +Vout 4 No Pin Common -Vout -Vout 5 6 50.8*25.4*10.2 mm Case Size : Case Material : Metal With Non-Conductive Baseplate Weight : 32g Flammability : UL94V-0 2.0*1.0*0.4 inches Remote On/Off (Optional) The MKW2600 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