® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density FEATURES ►Smallest encapsulated 50W Converter ►Package Size 2.0”x 1.0”x 0.4” ►Ultra-Wide 4:1 lnput Range ►Excellent Efficiency up to 92% ►Output Current Up To 10A ►I/O-isolation Voltage 1500VDC ►Under- Voltage Shutdown ►Over Load and Over Voltage Protection ►Shielded Metal Case with Isolated Baseplate ►CSA/UL/IEC/EN 60950-1 (Approval pending) ►Heatsink (Optional) ►3 Years Product Warranty PRODUCT OVERVIEW The MINMAX MKWI50 series is the latest generation of high performance dc-dc converter modules setting a new standard concerning power density. The product offers fully 50W in an encapsulated, shielded metal package with dimensions of just 2.0”x1.0”x0.4”.All models provide ultra-wide 4:1 input voltage range and precisely regulated output voltages. A very high efficiency up to 92% which allows an operating temperature range of -40°C to +80°C is achieved by advanced circuit topology . Further features include remote On/Off, trimmable output voltage, under-voltage shutdown as well as overload and over-temperature protection. Typical applications for these converters are battery operated equipment, instrumentation, distributed power architectures in communication and industrial electronics and many other space critical applications. Model Selection Guide Model Input Output Number Voltage Voltage (Range) VDC MKWI50-24S033 MKWI50-24S05 MKWI50-24S12 MKWI50-24S15 MKWI50-24S24 MKWI50-48S033 MKWI50-48S05 MKWI50-48S12 MKWI50-48S15 MKWI50-48S24 24 ( 9 ~ 36 ) 48 ( 18 ~ 75 ) VDC 3.3 5 12 15 24 3.3 5 12 15 24 Output Current Input Current Reflected Over Max. capacitive Ripple Voltage Load Max. @Max. Load @No Load Current Protection mA 10000 10000 4170 3330 2080 10000 10000 4170 3330 2080 mA(typ.) 1528 2290 2267 2263 2286 764 1145 1134 1134 1143 mA(typ.) 80 60 80 80 80 40 30 60 60 50 mA(typ.) VDC 3.9 6.2 15 18 30 3.9 6.2 15 18 30 40 30 Efficiency (typ.) @Max. Load μF 26000 17000 3000 2000 750 26000 17000 3000 2000 750 % 90 91 92 92 91 90 91 92 92 91 Input Specifications Parameter Input Surge Voltage (100ms. max) Start-Up Threshold Voltage Under Voltage Lockout Input Polarity Protection Start Up Time Power Up Remote On/Off Internal Filter Type Short Circuit Current E-mail:[email protected] 2013/01/25 P4 Model 24V Input Models 48V Input Models Min. -0.7 -0.7 24V Input Models 48V Input Models 24V Input Models 48V Input Models --------- Max. 50 100 9 18 ----- Unit VDC None ----30 ms Nominal Vin and Constant Resistive Load ----30 ms All Models LC Filter (for EN55022,Class A compliance see Page 6) --- (Hiccup Mode 0.3 Hz typ.) Tel:886-6-2923150 Page 1 of 8 Typ. --------7.5 16 ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density Output Specifications Parameter Output Voltage Setting Accuracy Line Regulation Load Regulation Minimum Load Conditions At 50% Load and Nominal Vin Vin=Min. to Max. @Full Load Min. Load to Full Load Min. Typ. ------------No minimum Load Requirement 3.3V & 5V Models(3) --100 --150 12V, 15V & 24V Models(3) 25% Load Step Change(2) --250 ----Current Limitation at 150% typ. of Iout max., Hiccup Hiccup Automatic Recovery For Shutdown Voltage see Model Selection Guide Max. ±1.0 ±0.5 ±0.5 Unit %Vnom. % % ------±0.02 mV P-P mV P-P μsec %/℃ Min. Typ. Max. 1500 ----1000 --------2200 --285 --MIL-HDBK-217F@25℃, Ground Benign 233,500 ----UL/cUL 60950-1 recognition(CSA certificate), IEC/EN 60950-1(CB-scheme) Unit VDC MΩ pF KHz Hours Ripple & Noise (20MHz bandwith) Transient Recovery Time Temperature Coefficient Over Load Protection Short Circuit Protection Over Voltage Protection General Specifications Parameter I/O Isolation Voltage (rated) I/O Isolation Resistance I/O Isolation Capacitance Switching Frequency MTBF(calculated) Safety Approvals(pending) Conditions 60 Seconds 500 VDC 100KHz, 1V Input Fuse 24V Input Models 10000mA Slow-Blow Type 48V Input Models 5000mA Slow-Blow Type Remote On/Off Control Parameter Converter On Converter Off Control Input Current (on) Control Input Current (off) Control Common Standby Input Current Conditions Vctrl = 5.0V Vctrl = 0V Nominal Vin Min. 3.5V ~ 12V or Open Circuit 0V ~ 1.2V or Short Circuit ----Referenced to Negative Input --- Typ. Max. Unit 0.5 -0.5 ----- mA mA 2.5 --- mA Output Voltage Trim Parameter Conditions % of nominal output voltage (24Vo Models) % of nominal output voltage (Other Models) Trim Up / Down Range (8) Min. +20 / -10 ±10 Typ. ----- Max. ----- Unit % % Environmental Specifications Parameter Model MKWI50-24S033, MKWI50-48S033 MKWI50-24S12, MKWI50-24S15 MKWI50-48S12, MKWI50-48S15 MKWI50-24S05, MKWI50-24S24 MKWI50-48S05, MKWI50-48S24 Natural Convection without Heatsink Natural Convection with Heatsink 100LFM Convection without Heatsink 100LFM Convection with Heatsink 200LFM Convection without Heatsink 200LFM Convection with Heatsink 400LFM Convection without Heatsink 400LFM Convection with Heatsink Operating Ambient Temperature Range (Natural Convection, see Derating) Thermal Impedance Case Temperature Thermal Protection Storage Temperature Range Humidity (non condensing) RFI Lead Temperature (1.5mm from case for 10Sec.) E-mail:[email protected] 2013/01/25 P4 Page 2 of 8 Min. -40 Max. without Heatsink with Heatsink 61 69 53 62 46 57 12.1 9.8 9.2 5.4 7.8 4.5 5.2 3.0 --- Shutdown Temperature Tel:886-6-2923150 -50 --Six-Sided Shielded, Metal Case --- ----------------+105 110℃ typ. +125 95 260 Unit ℃ ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ℃ ℃ % rel. H ℃ ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density EMC Specifications Parameter EMI ESD Radiated immunity Fast transient (See Note 7) Surge (See Note 7) Conducted immunity Standards & Level EN55022 EN61000-4-2 air ± 8KV , Contact ± 6KV EN61000-4-3 10V/m EN61000-4-4 ±2KV EN61000-4-5 ±1KV EN61000-4-6 10V/m Performance Class A (See Page 6) Perf. Criteria A Perf. Criteria A Perf. Criteria A Perf. Criteria A Perf. Criteria A Output Power (%) Output Power (%) Power Derating Curve MKWI50-24S033,MKWI50-48S033 Derating Curve with Heatsink Output Power (%) Output Power (%) MKWI50-24S033,MKWI50-48S033 Derating Curve without Heatsink Derating Curve with Heatsink MKWI50-24S05, MKWI50-24S24, MKWI50-48S05, MKWI50-48S24 MKWI50-24S05, MKWI50-24S24, MKWI50-48S05, MKWI50-48S24 Derating Curve without Heatsink Derating Curve with Heatsink Output Power (%) MKWI50-24S12,MKWI50-24S15, MKWI50-48S12, MKWI50-48S15 Derating Curve without Heatsink Output Power (%) MKWI50-24S12,MKWI50-24S15, MKWI50-48S12, MKWI50-48S15 E-mail:[email protected] 2013/01/25 P4 Page 3 of 8 Tel:886-6-2923150 ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density 100 100 90 90 Efficiency(%) Efficiency(%) Efficiency Curve @25℃ 80 70 60 80 70 60 9V 50 9V 50 24V 36V 40 10 20 30 40 50 60 70 80 90 24V 36V 40 100 10 20 30 % of Full Load 50 60 70 80 90 100 % of Full Load MKWI50-24S033 Efficiency vs Load Current MKWI50-24S05 Efficiency vs Load Current 100 100 90 90 Efficiency(%) Efficiency(%) 40 80 70 60 80 70 60 9V 50 9V 50 24V 36V 40 10 20 30 40 50 60 70 80 90 24V 36V 40 100 10 20 30 % of Full Load 50 60 70 80 90 100 % of Full Load MKWI50-24S12 Efficiency vs Load Current MKWI50-24S15 Efficiency vs Load Current 100 100 90 90 Efficiency(%) Efficiency(%) 40 80 70 60 80 70 60 9V 50 18V 50 24V 36V 40 10 20 30 40 50 60 70 80 90 48V 75V 40 100 10 20 30 % of Full Load 50 60 70 80 90 100 % of Full Load MKWI50-24S24 Efficiency vs Load Current MKWI50-48S033 Efficiency vs Load Current 100 100 90 90 Efficiency(%) Efficiency(%) 40 80 70 60 80 70 60 18V 50 18V 50 48V 75V 40 10 20 30 40 50 60 70 80 90 48V 75V 40 100 10 20 30 % of Full Load 50 60 70 80 90 100 % of Full Load MKWI50-48S05 Efficiency vs Load Current MKWI50-48S12 Efficiency vs Load Current 100 100 90 90 Efficiency(%) Efficiency(%) 40 80 70 60 80 70 60 18V 50 48V 75V 40 10 20 30 40 50 60 70 80 90 100 % of Full Load MKWI50-48S15 Efficiency vs Load Current E-mail:[email protected] 2013/01/25 P4 Page 4 of 8 Tel:886-6-2923150 18V 50 48V 75V 40 10 20 30 40 50 60 70 80 90 100 % of Full Load MKWI50-48S24 Efficiency vs Load Current ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density 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 20 MHz, measured with a 1μF MLCC and a 10μF Tantalum Capatitor. 4 All DC/DC converters should be externally fused at the front end for protection. 5 Other input and output voltage may be available, please contact factory. 6 To order the converter with heatsink, please add a suffix -HS (e.g. MKWI50-24S05-HS) to order code. The MKWI50 series can meet EN61000-4-4 & EN61000-4-5 by adding a capacitor across the input pins.Suggested capacitor: CHEMI-CON KY 220μF/100V. Do not exceed maximum power specification when adjusting output voltage. 7 8 9 10 Natural convection means an airflow of about 20LFM and is not equal to still air (0 LFM). Specifications are subject to change without notice. Package Specifications Mechanical Dimensions Pin Connections 1 1.00 [ 0.04] 2 3.6 [0.14] Bottom View 50.8 [2.00] 3 5.08 [0.20] 45.72 [1.80] 10.16 [0.40] Pin Function 1 +Vin 2 -Vin 3 Remote On/Off 4 +Vout 5 -Vout 6 Trim 1.1 [0.04] 5 6 10.16 [0.40] 4 10.16 [0.40] ►All 2.54 [0.10] 5.5 [0.22] 25.4 [1.00] Physical Characteristics Case Size : 50.8x25.4x11mm (2.0x1.0x0.43 inches) Case Material : Aluminium Alloy, Black Anodized Coating Base Material : FR4 PCB (flammability to UL 94V-0 rated) Pin Material : Copper Alloy with Gold Plate Over Nickel Subplate Potting Material : Epoxy (UL94-V0) Weight : 34g E-mail:[email protected] 2013/01/25 P4 Page 5 of 8 Tel:886-6-2923150 dimensions in mm (inches) ►Tolerance 11.0 [0.43] : X.X±0.25 (X.XX±0.01) X.XX±0.13 ( X.XXX±0.005) ►Pin diameter 1.0 ±0.05 (0.04±0.002) ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density Heatsink (Option –HS) 31.1 [1.22] Physical Characteristics Heatsink Material : Aluminum Finish : Black Anodized Coating Weight : 9g 18.0 [0.71]Max 31.0 [1.22]Max Heat-sink ►The advantages of adding a heatsink are: Thermal pad 1. To help heat dissipation and increase the stability and Clamp Converter reliability of DC/DC converters at high operating temperature atmosphere. 2. To upgrade the operating temperature of DC/DC converters, please refer to Derating Curve. EMI-Filter to meet EN 55022, class A; FCC part 15 ,level A Conducted and radiated emissions EN55022 Class A Part No. C1 C2 L1 MKWI50-24SXX 10μF/50V 1210 X7S MLCC 1000pF/2KV 1206 MLCC SMTDR54-1R5M-JT8 E-mail:[email protected] 2013/01/25 P4 Page 6 of 8 Tel:886-6-2923150 MKWI50-48SXX 3.3μF/100V 1210 X7S MLCC 1000pF/2KV 1206 MLCC SMTDR54-6R8M-JT8 ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density External Output Trimming Output can be externally trimmed by using the method shown below MKWI50 Module Bottom View MKWI50 Module Bottom View MKWI50-XXS033 Trim Table Trim down 1 2 Vout= Vox0.99 Vox0.98 Rd= 63.59 30.28 Trim up Vout= Ru= 1 Vox1.01 70.50 MKWI50-XXS05 Trim Table Trim down 1 Vout= Vox0.99 Rd= 45.53 Trim up Vout= Ru= 1 Vox1.01 36.57 MKWI50-XXS12 Trim Table Trim down 1 Vout= Vox0.99 Rd= 394.50 Trim up Vout= Ru= 1 Vox1.01 368.92 MKWI50-XXS15 Trim Table Trim down 1 Vout= Vox0.99 Rd= 572.67 Trim up Vout= Ru= 1 Vox1.01 392.98 MKWI50-XXS24 Trim Table Trim down 1 Vout= Vox0.99 Rd= 318.05 Trim up Vout= Ru= 2 Vox1.02 247.2 3 Vox0.97 18.19 4 Vox0.96 11.95 5 Vox0.95 8.13 6 Vox0.94 5.56 7 Vox0.93 3.70 8 Vox0.92 2.31 9 Vox0.91 1.21 10 Vox0.90 0.34 % Volts KOhms 2 Vox1.02 29.28 3 Vox1.03 16.87 4 Vox1.04 10.90 5 Vox1.05 7.38 6 Vox1.06 5.06 7 Vox1.07 3.42 8 Vox1.08 2.20 9 Vox1.09 1.25 10 Vox1.10 0.49 % Volts KOhms 2 Vox0.98 20.61 3 Vox0.97 12.31 4 Vox0.96 8.15 5 Vox0.95 5.66 6 Vox0.94 4.00 7 Vox0.93 2.81 8 Vox0.92 1.92 9 Vox0.91 1.23 10 Vox0.90 0.68 % Volts KOhms 2 Vox1.02 16.58 3 Vox1.03 9.92 4 Vox1.04 6.59 5 Vox1.05 4.59 6 Vox1.06 3.25 7 Vox1.07 2.30 8 Vox1.08 1.59 9 Vox1.09 1.03 10 Vox1.10 0.59 % Volts KOhms 2 Vox0.98 179.74 3 Vox0.97 106.08 4 Vox0.96 68.86 5 Vox0.95 46.39 6 Vox0.94 31.36 7 Vox0.93 20.60 8 Vox0.92 12.51 9 Vox0.91 6.21 10 Vox0.90 1.17 % Volts KOhms 2 Vox1.02 161.92 3 Vox1.03 94.97 4 Vox1.04 61.86 5 Vox1.05 42.12 6 Vox1.06 29.00 7 Vox1.07 19.66 8 Vox1.08 12.66 9 Vox1.09 7.23 10 Vox1.10 2.89 % Volts KOhms 2 Vox0.98 248.63 3 Vox0.97 145.60 4 Vox0.96 94.97 5 Vox0.95 64.87 6 Vox0.94 44.92 7 Vox0.93 30.72 8 Vox0.92 20.10 9 Vox0.91 11.86 10 Vox0.90 5.28 % Volts KOhms 2 Vox1.02 182.12 3 Vox1.03 108.73 4 Vox1.04 71.43 5 Vox1.05 48.85 6 Vox1.06 33.71 7 Vox1.07 22.86 8 Vox1.08 14.69 9 Vox1.09 8.33 10 Vox1.10 3.23 % Volts KOhms 2 Vox0.98 146.05 3 Vox0.97 85.8 4 Vox0.96 55.51 5 Vox0.95 37.415 6 Vox0.94 25.625 7 Vox0.93 16.515 8 Vox0.92 9.81 9 Vox0.91 4.9785 10 Vox0.90 0.9185 % Volts KOhms 4 Vox1.04 109.255 6 Vox1.06 63.38 8 Vox1.08 39.025 10 Vox1.1 27.52 12 Vox1.12 18.39 14 Vox1.14 11.77 16 Vox1.16 7.29 18 Vox1.18 3.308 20 Vox1.20 0.3658 % Volts KOhms E-mail:[email protected] 2013/01/25 P4 Page 7 of 8 Tel:886-6-2923150 ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density Test Setup Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with a inductor Lin (4.7μH) and Cin (220μF, 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 Current Probe Cin +Out DC / DC Converter -Vin Load -Out Peak-to-Peak Output Noise Measurement Test Use a 1μF ceramic capacitor and a 10μF tantalum 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 Technical Notes 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 0V to 1.2V. A logic high is 3.5V to 12V. The maximum sink current at the on/off terminal (Pin 3) during a logic low is -100μA. Overcurrent Protection To provide hiccup mode protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an unlimited duration. Overvoltage Protection The output overvoltage clamp consists of control circuitry, which is independent of the primary regulation loop, that monitors the voltage on the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage control that reduces the risk of output overvoltage. The OVP level can be found in the output data. 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 Ω at 100 KHz) capacitor of a 10μF 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 4.7μF capacitors at the output. + +Vin DC Power Source - +Out Single Output DC / DC Converter -Vin Cout Load -Out Maximum Capacitive Load The MKWI50 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. 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 105℃. The derating curves are determined from measurements obtained in a test setup. Position of air velocity probe and thermocouple 15mm / 0.6in 50mm / 2in Air Flow DUT 18, Sin Sin Road, An-Ping Industrial District, Tainan 702, Taiwan Tel: 886-6-2923150 Fax: 886-6-2923149 E-mail: [email protected] Minmax Technology Co., Ltd. 2013/01/25 P4 Page 8 of 8