MKW1000 Series 10W, Wide Input Range, Single & Dual Output DC/DC Converters Key Features y y y y y y y y y y Efficiency up to 83% 1500VDC Isolation MTBF > 700,000 Hours 2:1 Wiide Input Range UL1950 Safety Approval Complies with EN55022 Class A Six-Sided Shielding Temperature Performance -40] to +71] Industry Standard Pinout Internal SMD Construction Minmax's MKW1000 series of DC/DC converters, comprising 24 different models, is designed for a wide range of applications including $ data communication equipments, mobile battery driven equipments, distributed power systems, telecommunication equipments, mixed analog/digital subsystems, process/machine control equipments, Low Cost computer peripheral systems and industrial robot systems. Packing up to 10W of power into a 2x1x0.4 inch package, with efficiencies as high as 83%, the MKW1000 has wide input ranges of 9-18VDC, 18-36VDC and 36-75VDC and is available in output voltages 1500 VDC of 3.3V, 5V, 12V, 15V, 24V, {5V, {12V and {15VDC. Other feathers include continuous short circuit protection, six-sided EMI 2:1 EN55022 Wide Range shielded case and EN55022 Class A conducted noise compliance minimize design-in time, cost and eliminate the need for external I/O Isolation 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 MKW1000 Series Model Selection Guide Model Number MKW1021 MKW1022 MKW1023 MKW1024 MKW1025 MKW1026 MKW1027 MKW1028 MKW1031 MKW1032 MKW1033 MKW1034 MKW1035 MKW1036 MKW1037 MKW1038 MKW1041 MKW1042 MKW1043 MKW1044 MKW1045 MKW1046 MKW1047 MKW1048 Input Voltage Output Voltage VDC VDC 3.3 5 12 15 24 {5 {12 {15 3.3 5 12 15 24 {5 {12 {15 3.3 5 12 15 24 {5 {12 {15 12 ( 9 ~ 18 ) 24 ( 18 ~ 36 ) 48 ( 36 ~ 75 ) Output Current Max. mA 2400 2000 830 670 416 {1000 {416 {333 2400 2000 830 670 416 {1000 {416 {333 2400 2000 830 670 416 {1000 {416 {333 Input Current Min. mA 120 100 42 34 21 {50 {21 {17 120 100 42 34 21 {50 {21 {17 120 100 42 34 21 {50 {21 {17 @No Load mA (Typ.) mA (Typ.) 30 50 20 25 10 12 Efficiency @Max. Load % (Typ.) 72 77 80 80 81 78 81 80 76 78 82 82 83 80 82 82 76 80 82 83 83 81 83 83 Notes : 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 @Max. Load mA (Typ.) 917 1082 1038 1047 1027 1068 1027 1041 434 534 506 511 501 521 507 507 217 260 253 252 251 257 251 251 Reflected Ripple Current Min. -0.7 -0.7 -0.7 ----- Max. 25 50 100 260 5,000 Unit VDC 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. Environmental Specifications Parameter Operating Temperature Operating Temperature Storage Temperature Humidity Cooling RFI Conducted EMI REV:0 2005/04 Conditions Ambient Case Min. Max. -40 +71 -40 +90 -40 +125 --95 Free-Air Convection Six-Sided Shielded, Metal Case EN55022 Class A Unit ] ] ] % MINMAX 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. 7. Other input and output voltage may be available, please contact factory. 8. Specifications subject to change without notice. 2 MKW1000 Series Input Specifications Parameter Start Voltage Model Under Voltage Shutdown Min. Typ. 12V Input Models 8 8.5 9 24V Input Models 15 17 18 48V Input Models 30 33 36 12V Input Models 7 8 8.5 24V Input Models 13 15 17 34 48V Input Models Reverse Polarity Input Current Short Circuit Input Power Max. All Models Unit VDC 25 29 --- --- 2 A --- 3500 4500 mW Input Filter Pi Filter Output Specifications Parameter Conditions Min. Typ. Max. Unit --- {0.5 {1.0 % Dual Output, Balanced Loads --- {0.5 {2.0 % Line Regulation Vin=Min. to Max. --- {0.1 {0.3 % Load Regulation Io=10% to 100% --- {0.1 {0.5 % --- 50 75 mV P-P --- --- 100 mV P-P --- --- 15 mV rms Over Power Protection 120 --- --- % Transient Recovery Time --- 150 300 uS Output Voltage Accuracy Output Voltage Balance Ripple & Noise (20MHz) Ripple & Noise (20MHz) Over Line, Load & Temp. Ripple & Noise (20MHz) 25% Load Step Change Transient Response Deviation 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 --- 150 470 pF Switching Frequency MTBF MIL-HDBK-217F @ 25], Ground Benign 260 300 340 KHz 700 --- --- K Hours Capacitive Load Models by Vout Maximum Capacitive Load 3.3V 5V 12V 15V 24V {5V # {12V # {15V # Unit 2200 2200 2200 2200 2200 470 470 470 uF # For each output 3 MINMAX REV:0 2005/04 MKW1000 Series Input Fuse Selection Guide 12V Input Models 3000mA Slow - Blow Type 24V Input Models 48V Input Models 1500mA Slow - Blow Type 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 REV:0 2005/04 100uS 1mS MINMAX 10mS 100mS 4 100 100 90 90 Efficiency (%) Efficiency (%) MKW1000 Series 80 70 60 80 70 60 50 Low Nom 50 High Low Nom Input Voltage (V) Efficiency vs Input Voltage ( Dual Output ) 90 90 80 80 70 70 Efficiency (%) Efficiency (%) Efficiency vs Input Voltage ( Single Output ) 60 50 60 50 40 40 30 30 20 10 20 40 High Input Voltage (V) 60 80 100 20 Load Current (%) 10 20 40 60 80 100 Load Current (%) Efficiency vs Output Load ( Single Output ) Efficiency vs Output Load ( Dual Output ) 100 100LFM 400LFM Natural convection 200LFM Output Power (%) 80 60 40 20 0 -40 50 60 70 80 Ambient Temperature 90 100 110 ] Derating Curve 5 MINMAX REV:0 2005/04 MKW1000 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 Load -Out 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 Input Source Impedance 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 15uF for the 12V input devices and a 4.7uF for the 24V and 48V devices. + DC Power Source Copper Strip +Vin + DC / DC Converter Cout -Vin -Out +Vin +Out Dual Output DC / DC Converter Com. -Vin -Out Load Cin - Single Output DC / DC Converter +Out -Vin -Out Resistive Scope Load 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 3.9uF capacitors at the output. Copper Strip Cout Scope Cout Scope Resistive Load + +Vin DC Power Source Design & Feature Considerations +Out Single Output DC / DC Converter - -Vin + +Vin Cout Load -Out Maximum Capacitive Load The MKW1000 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 470uF maximum capacitive load for dual outputs and 2200uF capacitive load for single outputs. The maximum capacitance can be found in the data sheet. REV:0 2005/04 DC Power Source MINMAX - +Out Dual Output DC / DC Com. Converter -Vin -Out Cout Load 6 MKW1000 Series 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 90C. 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 MKW1000 Series Mechanical Dimensions Connecting Pin Patterns Top View ( 2.54 mm / 0.1 inch grids ) Single Output 10.20 [0.402] 10.20 [0.402] 2 Dual Output 15.2 [0.60] 1 Side 1.00[ Bottom 50.8 [2.00] 5 0.039] 4 20.30 [0.800] 3 2.5 [0.10] 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 5 -Vout -Vout 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 The MKW1000 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