FEATURES ►2”x 1”x 0.4” Metal Package ►Wide 2:1 Input Range ►High Efficiency up to 86% ►Operating Temp. Range –40°C to +80°C ►Short Circuit Protection ►I/O-isolation 1500 VDC ►Input Filter to meet EN55022,class A (Option) ►Heatsink (Option) ►Cost optimized Design ►3 Years Product Warranty PRODUCT OVERVIEW The MKW2500 series is a range of isolated 15W DC/DC converter modules featuring fully regulated output voltages and wide 2:1 input voltage ranges. The product comes in a 2”x 1”x 0.4” metal package with industry standard pinout.An excellent efficiency allows an operating temperature range of –40° C to +80°C. They feature as option input filter to meet EN55022,class A and remote On/Off input. These DC/DC converters offer an economical solution for many cost critical applications in battery-powered equipment and instrumentation. Model Selection Guide Model Input Output Output Number Voltage Voltage Current (Range) VDC MKW2521 MKW2522 MKW2529 MKW2523 MKW2524 MKW2526 MKW3267 MKW2531 MKW2532 MKW2539 MKW2533 MKW2534 MKW2536 MKW2537 MKW2541 MKW2542 MKW2549 MKW2543 MKW2544 MKW2546 MKW2547 12 (9 ~ 18) 24 (18 ~ 36) 48 (36 ~ 75) VDC 3.3 5 5.1 12 15 ±12 ±15 3.3 5 5.1 12 15 ±12 ±15 3.3 5 5.1 12 15 ±12 ±15 Input Current Reflected Max. capacitive Ripple Load Max. Min. @Max. Load @No Load Current mA 3000 3000 3000 1250 1000 ±625 ±500 3000 3000 3000 1250 1000 ±625 ±500 3000 3000 3000 1250 1000 ±625 ±500 mA 300 300 300 125 100 ±62.5 ±50 300 300 300 125 100 ±62.5 ±50 300 300 300 125 100 ±62.5 ±50 mA(typ.) 1057 1524 1574 1452 1452 1452 1452 528 762 787 726 726 726 726 264 381 393 363 363 363 363 mA(typ.) mA(typ.) 30 50 uF 220# 470 40 220# 470 10 30 220# # For each output In Total Power International, Inc Toll Free: 877-646-0900 (typ.) @Max. Load 470 20 Efficiency www.total-power.com % 78 82 81 86 86 86 86 78 82 81 86 86 86 86 78 82 81 86 86 86 86 MKW2500 SERIES Total Power International, Inc. Tota DC/DC CONVERTER 15W Input Specifications Parameter Input Surge Voltage (1 sec. max.) Start-Up Voltage Under Voltage Shutdown Reverse Polarity Input Current Short Circuit Input Power Internal Power Dissipation Conducted EMI (with suffix A only) Model 12V Input Models 24V Input Models 48V Input Models 12V Input Models 24V Input Models 48V Input Models 12V Input Models 24V Input Models 48V Input Models Min. -0.7 -0.7 -0.7 Typ. Max. Unit 25 --50 --100 --9 8 8.5 VDC 15 17 18 30 33 36 7 8 8.5 13 15 17 25 29 34 ----1 A ----3500 mW ----5000 mW Compliance to EN 55022,class A and FCC part 15,class A All Models Output Specifications Parameter Output Voltage Accuracy Output Voltage Balance Line Regulation Load Regulation Ripple & Noise (20MHz) Ripple & Noise (20MHz) Ripple & Noise (20MHz) Transient Recovery Time Transient Response Deviation Temperature Coefficient Over Load Protection Short Circuit Protection Conditions Dual Output, Balanced Loads Vin=Min. to Max. Io=10% to 100% Over Line, Load & Temp. 25% Load Step Change Foldback Min. --------------------120 Typ. ±1.0 ±0.5 ±0.1 ±0.5 55 ----300 ±2 ±0.01 150 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 % %/℃ % Continuous General Specifications Parameter Conditions Min. Typ. Max. Unit 60 Seconds 1500 --- --- VDC I/O Isolation Resistance 500 VDC 1000 --- --- MΩ I/O Isolation Capacitance 100KHz, 1V --- 1200 1500 pF 290 330 400 KHz 700,000 --- --- Hours I/O Isolation Voltage (rated) Switching Frequency MTBF (calculated) MIL-HDBK-217F@25℃, Ground Benign Safety Approvals UL/cUL 60950-1 recognition(CSA certificate), IEC/EN 60950-1(CB-scheme) Input Fuse 12V Input Models 24V Input Models 48V Input Models 2500mA Slow-Blow Type 1250mA Slow-Blow Type 750mA Slow-Blow Type Remote On/Off Control Parameter Conditions Min. Converter On 2.5V ~ 5.5V or Open Circuit Converter Off -0.7V ~ 0.8V or Short Circuit Typ. Max. Unit Control Input Current (on) Vctrl = 5.0V --- --- 50 uA Control Input Current (off) Vctrl = 0V --- --- -1 mA --- 10 mA Control Common Standby Input Current In Total Power International, Inc Referenced to Negative Input Nominal Vin Toll Free: 877-646-0900 --- www.total-power.com MKW2500 SERIES Tota Total Power International, Inc. DC/DC CONVERTER 15W Environmental Specifications Parameter Conditions Min. Max. Ambient -40 +80 ℃ Case Temperature --- +100 ℃ Storage Temperature Range -50 +125 ℃ Humidity (non condensing) --- 95 % rel. H 260 ℃ Operating Temperature Range (with Derating) Cooling Free-Air convection Lead Temperature (1.5mm from case for 10Sec.) --- Unit Power Derating Curve Derating Curve without Heatsink Derating Curve with Heatsink 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 Ripple & Noise measurement bandwidth is 0-20MHz. 4 These power converters require a minimum output loading to maintain specified regulation, operation under no-load conditions will not damage these 5 All DC/DC converters should be externally fused at the front end for protection. modules; however they may not meet all specifications listed. 6 Other input and output voltage may be available, please contact factory. 7 To order the converter with Remote On/Off function, add suffix RC (e.g. MKW2521-RC) to order code. 8 To order the converter with input filter meeting EN55022, Class A , add suffix A (e.g. MKW2521A) to order code. 9 To order the converter with heatsink, add suffix H (e.g. MKW2521H) to order code. 10 Specifications subject to change without notice. In Total Power International, Inc Toll Free: 877-646-0900 www.total-power.com MKW2500 SERIES Tota Total Power International, Inc. DC/DC CONVERTER 15W Package Specifications Mechanical Dimensions 10.16 [0.40] 10.16 [0.40] 2 +Vin 2 -Vin +Vin -Vin 3 +Vout +Vout 4 No Pin Common 5 -Vout -Vout 6 Remote On/Off (Optional) NC: No Connection 6 15.2 [0.60] 1 Dual Output 1 50.8 [2.00] 3.6 [0.14] Bottom View 1.00 [ 0.04] 5 4 3 20.32 [0.80] 2.54 [0.10] Pin Connections Pin Single Output 1.1 [0.04] ►All 7.62 [0.30] 5.08 [0.20] 7.62 [0.30] 6.0 [0.24] 10.2 [0.40] dimensions in mm (inches) ►Tolerance: X.X±0.25 (X.XX±0.01) X.XX±0.13 ( X.XXX±0.005) 25.4 [1.00] ►Pin diameter 1.0 ±0.05 (0.04±0.002) Physical Characteristics Case Size : 50.8x25.4x10.2mm (2.0x1.0x0.40 Inches) Case Material : Metal With Non-Conductive Baseplate Base Material : FR4 PCB (flammability to UL 94V-0 rated) Weight : 32g Heatsink (Option –H) 23.0 [0.91] Physical Characteristics Heatsink Material : Aluminum Finish : Black Anodized Coating Weight : 9g 18.0 [0.71]Max 31.0 [1.22]Max ►The Heat-sink Thermal pad advantages of adding a heatsink are: 1. To help heat dissipation and increase the stability and reliability of DC/DC converters at high Clamp Converter operating temperature atmosphere. 2. To upgrade the operating temperature of DC/DC converters, please refer to Derating Curve. In Total Power International, Inc Toll Free: 877-646-0900 www.total-power.com MKW2500 SERIES Tota Total Power International, Inc. DC/DC CONVERTER 15W Test Configurations Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with a inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0Ω 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 DC / DC Converter Current Probe Cin +Out -Vin 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 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 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. 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 < 1.0Ω at 100 KHz) capacitor of a 22uF for the 12V input devices and a 6.8uF for the 24V and 48V devices. + 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 4.7uF capacitors at the output. + +Vin DC Power Source - +Out Single Output DC / DC Converter -Vin + Cout Load -Out +Vin DC Power Source - +Out Dual Output Com. DC / DC Converter -Vin -Out Cout Load Load Cout 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℃. The derating curves are determined from measurements obtained in a test setup. Position of air velocity probe and thermocouple 50mm / 2in 15mm / 0.6in In Total Power International, Inc Air Flow DUT Toll Free: 877-646-0900 www.total-power.com