® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density FEATURES ►Smallest Encapsulated 50W Converter! ►Package Size 2.0”x 1.0”x 0.4” ►Wide 2:1 lnput Range ►Excellent Efficiency up to 92% ►Over-Temperature Protection ►I/O-isolation Voltage 1500VDC ►Remote On/Off Control ►Shielded Metal Case with Isolated Baseplate ►Heatsink (Optional) ►UL/cUL/IEC/EN 60950-1 Safety Approval ►3 Years Product Warranty PRODUCT OVERVIEW The MINMAX MKW50 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 wide 2:1 input voltage range and precisely regulated output voltages. Advanced circuit topology provides a very high efficiency up to 92% which allows an operating temperature range of -40°C to +80°C . 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 MKW50-12S033 MKW50-12S05 MKW50-12S12 MKW50-12S15 MKW50-12S24 MKW50-24S033 MKW50-24S05 MKW50-24S12 MKW50-24S15 MKW50-24S24 MKW50-48S033 MKW50-48S05 MKW50-48S12 MKW50-48S15 MKW50-48S24 12 ( 9 ~ 18 ) 24 ( 18 ~ 36 ) 48 ( 36 ~ 75 ) VDC 3.3 5 12 15 24 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 10000 10000 4170 3330 2080 mA(typ.) 3090 4630 4580 4580 4570 1550 2260 2260 2260 2290 770 1130 1130 1130 1150 mA(typ.) 85 110 160 160 250 50 70 85 85 110 35 45 50 50 60 mA(typ.) VDC 3.9 6.2 15 18 30 3.9 6.2 15 18 30 3.9 6.2 15 18 30 50 40 30 Efficiency (typ.) @Max. Load μF 25800 17000 2900 1900 750 25800 17000 2900 1900 750 25800 17000 2900 1900 750 % 89 90 91 91 91 89 92 92 92 91 89 92 92 92 91 Input Specifications Parameter 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 Input Surge Voltage (100ms. max) Start-Up Threshold Voltage Under Voltage Lockout Min. -0.7 -0.7 -0.7 ------------- Typ. ------------8.3 16.5 33 Max. 25 50 100 9 18 36 ------- Unit VDC Input Polarity Protection None Power Up ----30 ms Start Up Time Nominal Vin and Constant Resistive Load Remote On/Off ----30 ms Conducted EMI All Models Internal LC Filter (for EN55022,Class A and FCC level A compliance see note 7) Short Circuit Current --- (Hiccup Mode 1.5 Hz typ, 24V Output Model:0.3 Hz typ.) E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 1 of 9 ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density Output Specifications Parameter Output Voltage Setting Accuracy Line Regulation Load Regulation Minimum Load Conditions Min. Typ. ----Vin=Min. to Max. @ Full Load ----Min. Load to Full Load ----No minimum Load Requirement ----3.3V & 5V Models(3) 0-20 MHz Bandwidth 12V, 15V & 24V Models(3) ------250 25% Load Step Change(2) --±3 ----Current Limitation at 150% typ. of Iout max., Hiccup Hiccup Automatic Recovery For Shutdown Voltage see Model Selection Guide Ripple & Noise Transient Recovery Time Transient Response Deviation Temperature Coefficient Over Current Protection Short Circuit Protection Over Voltage Protection Max. ±1.0 ±0.5 ±0.5 Unit %Vnom. % % 100 150 --±5 ±0.02 mV P-P mV P-P μsec % %/℃ General Specifications Parameter I/O Isolation Voltage (rated) I/O Isolation Resistance I/O Isolation Capacitance Conditions Min. Typ. Max. 60 Seconds 1500 ----500 VDC 1000 ----100KHz, 1V ----2200 --285 --24Vo Models Other Models --320 --MIL-HDBK-217F@25℃, Ground Benign 224,700 UL/cUL 60950-1 recognition (CSA certificate), IEC/EN 60950-1(CB-scheme) Switching Frequency MTBF(calculated) Safety Approvals Unit VDC MΩ pF KHz KHz Hours Remote On/Off Control Parameter Converter On Converter Off Control Input Current (on) Control Input Current (off) Control Common Standby Input Current Conditions Min. Typ. 3.5V ~ 12V or Open Circuit 0V ~ 1.2V or Short Circuit --0.5 ---0.5 Referenced to Negative Input --2.5 Vctrl = 5.0V Vctrl = 0V Nominal Vin Max. Unit ----- mA mA --- mA Max. ----- Unit % % Output Voltage Trim Parameter Conditions Trim Up / Down Range(9) % of Nominal Output Voltage 24Vo Models Other Models Min. +20 / -10 ±10 Typ. ----- Environmental Specifications Parameter Model Operating Temperature Range Natural Convection (10) Nominal Vin, Load 100% Inom. (for Power Derating see relative Derating Curves) Thermal Impedance MKW50-XXS033 MKW50-24S05, MKW50-24S12 MKW50-24S15, MKW50-48S05 MKW50-48S12, MKW50-48S15 MKW50-12S12, MKW50-12S15 MKW50-12S24, MKW50-24S24 MKW50-48S24 MKW50-12S05 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 Case Temperature Thermal Protection Storage Temperature Range Humidity (non condensing) Cooling RFI Lead Temperature (1.5mm from case for 10Sec.) E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 2 of 9 Min. Max. without Heatsink with Heatsink 56 64 53 62 ℃ -40 46 56 38 12.1 9.8 9.2 5.4 7.8 4.5 5.2 3.0 --- Shutdown Temperature -50 --Free-Air convection Six-Sided Shielded, Metal Case --- Unit 49 ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ℃/W ℃ ----------------+105 110℃ typ. +125 95 ℃ % rel. H 260 ℃ ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density EMC Specifications Parameter EMI Standards & Level Performance EN55022, FCC part 15 Class A (7) EN55024 ESD Radiated immunity Fast transient (8) Surge (8) Conducted immunity EMS EN61000-4-2 air ± 8kV , Contact ± 6kV EN61000-4-3 10V/m EN61000-4-4 ±2kV EN61000-4-5 ±1kV EN61000-4-6 10Vrms A A A A A Power Derating Curve MKW50-12S033, MKW50-24S033, MKW50-48S033 MKW50-12S033, MKW50-24S033, MKW50-48S033 Derating Curve without Heatsink Derating Curve with Heatsink MKW50-24S05, MKW50-24S12, MKW50-24S15, MKW50-48S05, MKW50-24S05, MKW50-24S12, MKW50-24S15, MKW50-48S05, MKW50-48S12, MKW50-48S15 Derating Curve without Heatsink MKW50-48S12, MKW50-48S15 Derating Curve with Heatsink MKW50-12S12, MKW50-12S15, MKW50-12S24, MKW50-24S24, MKW50-12S12, MKW50-12S15, MKW50-12S24, MKW50-24S24, MKW50-48S24 Derating Curve without Heatsink MKW50-48S24 Derating Curve with Heatsink MKW50-12S05 Derating Curve without Heatsink MKW50-12S05 Derating Curve with Heatsink E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 3 of 9 ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density Efficiency Curve @25℃ 90 90 Efficiency(%) 100 Efficiency(%) 100 80 70 9V 60 18V 20 40 60 80 70 9V 60 12V 50 80 12V 18V 50 100 20 40 % of Full Load 100 90 Efficiency(%) Efficiency(%) 90 80 70 9V 60 80 70 9V 60 12V 12V 18V 50 20 40 60 80 18V 50 20 100 40 MKW50-12S12 Efficiency vs Load Current 90 90 Efficiency(%) 100 80 70 9V 60 18V 50 60 80 80 70 18V 24V 36V 50 100 20 40 % of Full Load 90 90 Efficiency(%) 100 80 70 18V 60 24V 36V 50 60 80 % of Full Load MKW50-24S05 Efficiency vs Load Current E-mail:[email protected] REV:13 Tel:886-6-2923150 Page 4 of 9 80 100 MKW50-24S033 Efficiency vs Load Current 100 40 60 % of Full Load MKW50-12S24 Efficiency vs Load Current 20 100 60 12V 40 80 MKW50-12S15 Efficiency vs Load Current 100 20 60 % of Full Load % of Full Load Efficiency(%) 100 MKW50-12S05 Efficiency vs Load Current 100 Efficiency(%) 80 % of Full Load MKW50-12S033 Efficiency vs Load Current 2014/08/13 60 100 80 70 18V 60 24V 36V 50 20 40 60 80 % of Full Load MKW50-24S12 Efficiency vs Load Current 100 ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density 100 100 90 90 Efficiency(%) Efficiency(%) Efficiency Curve @25℃ 80 70 18V 60 36V 20 40 60 80 70 18V 60 24V 50 80 24V 36V 50 100 20 40 % of Full Load 90 90 Efficiency(%) Efficiency(%) 100 80 70 36V 60 75V 50 80 80 70 36V 60 48V 60 48V 75V 50 100 20 40 % of Full Load 90 90 Efficiency(%) Efficiency(%) 100 80 70 36V 60 48V 75V 50 60 80 100 Efficiency(%) 90 80 70 36V 60 48V 75V 50 80 % of Full Load MKW50-48S24 Efficiency vs Load Current E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 5 of 9 36V 60 48V 75V 50 40 60 80 MKW50-48S15 Efficiency vs Load Current 100 60 70 % of Full Load MKW50-48S12 Efficiency vs Load Current 40 100 80 20 % of Full Load 20 80 MKW50-48S05 Efficiency vs Load Current 100 40 60 % of Full Load MKW50-48S033 Efficiency vs Load Current 20 100 MKW50-24S24 Efficiency vs Load Current 100 40 80 % of Full Load MKW50-24S15 Efficiency vs Load Current 20 60 100 100 ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density 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 with a 1μF MLCC and a 10μF Tantalum Capatitor. 4 We recommend to protect the converter by a slow blow fuse in the input supply line. 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. MKW50-12S05-HS) to order code. 7 The MKW50 series can meet EN55022 Class A with parallel an external capacitor to the input pins. (12Vin: 22μF/25V 1210 MLCC, 24Vin: 3.3μF/50V 1210 MLCC, 8 48Vin: 2.2μF/100V 1210 MLCC. To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required. Suggested capacitor: CHEMI-CON KY 330μF/100V. 9 Do not exceed maximum power specification when adjusting output voltage. 10 That “natural convection” is about 20LFM but is not equal to still air (0 LFM). 11 Specifications are subject to change without notice. E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 6 of 9 ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density Package Specifications Mechanical Dimensions Pin Connections 1.00 [ 0.04] 1 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] dimensions in mm (inches) ►Tolerance: X.X±0.25 11.0 [0.43] (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 : 50.8x25.4x11.0mm (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 : 30g 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 improve heat dissipation and increase the stability and Clamp Converter reliability of the DC/DC converters at high operating temperatures. 2. To increase operating temperature of the DC/DC converter, please refer to Derating Curve. E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 7 of 9 ® MKW50 SERIES DC/DC CONVERTER 50W, Highest Power Density External Output Trimming Output can be externally trimmed by using the method shown below MKW50 Module Bottom View MKW50 Module Bottom View MKW50-XXS033 Trim Table Trim down 1 2 Vout= Vox0.99 Vox0.98 Rd= 72.61 32.55 Trim up Vout= Ru= 1 Vox1.01 60.84 MKW50-XXS05 Trim Table Trim down 1 Vout= Vox0.99 Rd= 138.88 Trim up Vout= Ru= 1 Vox1.01 106.87 MKW50-XXS12 Trim Table Trim down 1 Vout= Vox0.99 Rd= 413.55 Trim up Vout= Ru= 1 Vox1.01 351.00 MKW50-XXS15 Trim Table Trim down 1 Vout= Vox0.99 Rd= 530.73 Trim up Vout= Ru= 1 Vox1.01 422.77 MKW50-XXS24 Trim Table Trim down 1 Vout= Vox0.99 Rd= 333.39 Trim up Vout= Ru= 2 Vox1.02 243.70 3 Vox0.97 19.20 4 Vox0.96 12.52 5 Vox0.95 8.51 6 Vox0.94 5.84 7 Vox0.93 3.94 8 Vox0.92 2.51 9 Vox0.91 1.39 10 Vox0.90 0.50 % Volts KOhms 2 Vox1.02 27.40 3 Vox1.03 16.25 4 Vox1.04 10.68 5 Vox1.05 7.34 6 Vox1.06 5.11 7 Vox1.07 3.51 8 Vox1.08 2.32 9 Vox1.09 1.39 10 Vox1.10 0.65 % Volts KOhms 2 Vox0.98 62.41 3 Vox0.97 36.92 4 Vox0.96 24.18 5 Vox0.95 16.53 6 Vox0.94 11.44 7 Vox0.93 7.79 8 Vox0.92 5.06 9 Vox0.91 2.94 10 Vox0.90 1.24 % Volts KOhms 2 Vox1.02 47.76 3 Vox1.03 28.06 4 Vox1.04 18.21 5 Vox1.05 12.30 6 Vox1.06 8.36 7 Vox1.07 5.55 8 Vox1.08 3.44 9 Vox1.09 1.79 10 Vox1.10 0.48 % Volts KOhms 2 Vox0.98 184.55 3 Vox0.97 108.22 4 Vox0.96 70.05 5 Vox0.95 47.15 6 Vox0.94 31.88 7 Vox0.93 20.98 8 Vox0.92 12.80 9 Vox0.91 6.44 10 Vox0.90 1.35 % Volts KOhms 2 Vox1.02 157.50 3 Vox1.03 93.00 4 Vox1.04 60.75 5 Vox1.05 41.40 6 Vox1.06 28.50 7 Vox1.07 19.29 8 Vox1.08 12.37 9 Vox1.09 7.00 10 Vox1.10 2.70 % Volts KOhms 2 Vox0.98 238.61 3 Vox0.97 141.24 4 Vox0.96 92.56 5 Vox0.95 63.35 6 Vox0.94 43.87 7 Vox0.93 29.96 8 Vox0.92 19.53 9 Vox0.91 11.41 10 Vox0.90 4.92 % Volts KOhms 2 Vox1.02 189.89 3 Vox1.03 112.26 4 Vox1.04 73.44 5 Vox1.05 50.15 6 Vox1.06 34.63 7 Vox1.07 23.54 8 Vox1.08 15.22 9 Vox1.09 8.75 10 Vox1.10 3.58 % Volts KOhms 2 Vox0.98 148.80 3 Vox0.97 87.26 4 Vox0.96 56.50 5 Vox0.95 38.04 6 Vox0.94 25.73 7 Vox0.93 16.94 8 Vox0.92 10.35 9 Vox0.91 5.22 10 Vox0.90 1.12 % Volts KOhms 4 Vox1.04 108.50 6 Vox1.06 63.43 8 Vox1.08 40.90 10 Vox1.1 27.38 12 Vox1.12 18.37 14 Vox1.14 11.93 16 Vox1.16 7.10 18 Vox1.18 3.34 20 Vox1.2 0.34 % Volts KOhms E-mail:[email protected] 2014/08/13 REV:13 Tel:886-6-2923150 Page 8 of 9 ® MKW50 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 33μF for the 12V input devices and 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 MKW50 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. 2014/08/13 REV:13 Page 9 of 9