® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density FEATURES ►Smallest Encapsulated 50W Converter ►Ultra-compact 2" X 1" Package ►Ultra-wide 4:1 Input Voltage Range ►Fully Regulated Output Voltage ►Excellent Efficiency up to 92% ►I/O Isolation 1500 VDC ►Operating Ambient Temp. Range -40℃ to +80℃ ►No Min. Load Requirement ►Overload/Voltage/Temp. and Short Circuit Protection ►Remote On/Off Control, Output Voltage Trim ►Shielded Metal Case with Insulated Baseplate ►UL/cUL/IEC/EN 60950-1 Safety Approval 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 Number MKWI50-24S033 MKWI50-24S05 MKWI50-24S12 MKWI50-24S15 MKWI50-24S24 MKWI50-48S033 MKWI50-48S05 MKWI50-48S12 MKWI50-48S15 MKWI50-48S24 Input Voltage (Range) Output Voltage VDC VDC 3.3 5 12 15 24 3.3 5 12 15 24 24 ( 9 ~ 36 ) 48 ( 18 ~ 75 ) Output Current Input Current Max. @Max. Load @No Load 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 Reflected Ripple Current Over Voltage Protection Max. capacitive Load mA(typ.) VDC 3.9 6.2 15 18 30 3.9 6.2 15 18 30 μF 26000 17000 3000 2000 750 26000 17000 3000 2000 750 40 30 Efficiency (typ.) @Max. Load % 90 91 92 92 91 90 91 92 92 91 Input Specifications Parameter Conditions / Model 24V Input Models 48V Input Models 24V Input Models 48V Input Models 24V Input Models 48V Input Models Input Surge Voltage (100ms. max) Start-Up Threshold Voltage Under Voltage Lockout Input Polarity Protection Power Up Start Up Time Remote On/Off Input Filter E-mail:[email protected] 2016/06/17 REV:6 Nominal Vin and Constant Resistive Load All Models Tel:886-6-2923150 Page 1 of 10 Min. -0.7 -0.7 --------None ----- Typ. --------7.5 16 Max. 50 100 9 18 ----- --30 --30 Internal LC Type Unit VDC ms ms ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density 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 Max. ±1.0 ±0.5 ±0.5 Unit %Vnom. % % 100 150 --±5 ±0.02 +20 / -10 ±10 --- mV P-P mV P-P μsec % %/℃ % % % Output Specifications Parameter Output Voltage Setting Accuracy Line Regulation Load Regulation Minimum Load Conditions / Model 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 ----% of nominal output voltage (24Vo Models) ----% of nominal output voltage (Other Models) ----Hiccup --150 Hiccup Mode 0.3 Hz typ., Automatic Recovery Ripple & Noise Transient Recovery Time Transient Response Deviation Temperature Coefficient Trim Up / Down Range (See Page 8 ) Over Load Protection Short Circuit Protection General Specifications Parameter Conditions 60 Seconds 1 Seconds 500 VDC 100KHz, 1V Typ. Max. --------------2200 285 --MIL-HDBK-217F@25℃, Ground Benign 230,900 UL/cUL 60950-1 recognition (CSA certificate), IEC/EN 60950-1 (CB-report) I/O Isolation Voltage I/O Isolation Resistance I/O Isolation Capacitance Switching Frequency MTBF(calculated) Safety Approvals Min. 1500 1800 1000 ----- Unit VDC VDC MΩ pF KHz Hours Environmental Specifications Parameter Conditions / Model Operating Ambient Temperature Range Natural Convection (8) Nominal Vin, Load 100% Inom. (for Power Derating see relative Derating Curves) Thermal Impedance Case Temperature Thermal Protection Storage Temperature Range Humidity (non condensing) Cooling RFI Lead Temperature (1.5mm from case for 10Sec.) E-mail:[email protected] 2016/06/17 REV:6 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 -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 Page 2 of 10 Min. -50 --Natural convection 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 Standards & Level Conduction EN55024 ESD Radiated immunity Fast transient (7) Surge (7) Conducted immunity EMI EMS Performance EN55022, FCC part 15 Class A 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 External Filter meets Conducted EMI EN55022 class A; FCC part 15 level A Model MKWI50-24SXX MKWI50-48SXX C1 10μF/50V 1210 X7S MLCC 3.3μF/100V 1210 X7S MLCC E-mail:[email protected] 2016/06/17 REV:6 Tel:886-6-2923150 Page 3 of 10 C2 1000pF/2KV 1206 MLCC 1000pF/2KV 1206 MLCC L1 1.5μH 6.8μH ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density Power Derating Curve 100 100 Natural Convection 20LFM 100LFM 60 Natural Convection 20LFM 80 Output Power (%) Output Power (%) 80 200LFM 400LFM 40 20 100LFM 60 200LFM 400LFM 40 20 0 0 ~ -40 0 20 40 60 80 100 110 ~ -40 0 20 Ambient Temperature C MKWI50-24S033,MKWI50-48S033 Derating Curve without Heatsink 80 100 110 100 Natural Convection 20LFM 100LFM 60 200LFM 400LFM 40 Natural Convection 20LFM 80 Output Power (%) 80 Output Power (%) 60 MKWI50-24S033,MKWI50-48S033 Derating Curve with Heatsink 100 20 100LFM 60 200LFM 400LFM 40 20 0 0 ~ -40 0 20 40 60 80 100 110 ~ -40 0 20 Ambient Temperature C 40 60 80 100 110 Ambient Temperature C MKWI50-24S12,MKWI50-24S15, MKWI50-48S12, MKWI50-48S15 Derating Curve without Heatsink MKWI50-24S12,MKWI50-24S15, MKWI50-48S12, MKWI50-48S15 Derating Curve with Heatsink 100 100 Natural Convection 20LFM 100LFM 60 Natural Convection 20LFM 80 Output Power (%) 80 Output Power (%) 40 Ambient Temperature C 200LFM 400LFM 40 20 100LFM 60 200LFM 400LFM 40 20 0 0 ~ -40 0 20 40 60 80 100 110 Ambient Temperature C MKWI50-24S05, MKWI50-24S24, MKWI50-48S05, MKWI50-48S24 Derating Curve without Heatsink E-mail:[email protected] 2016/06/17 REV:6 Tel:886-6-2923150 Page 4 of 10 ~ -40 0 20 40 60 80 100 110 Ambient Temperature C MKWI50-24S05, MKWI50-24S24, MKWI50-48S05, MKWI50-48S24 Derating Curve with Heatsink ® 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] 2016/06/17 REV:6 Tel:886-6-2923150 Page 5 of 10 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 2 3 4 5 6 7 8 9 Specifications typical at Ta=+25℃, resistive load, nominal input voltage, rated output current unless otherwise noted. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. Ripple & Noise measurement with a 1μF MLCC and a 10μF Tantalum Capatitor. We recommend to protect the converter by a slow blow fuse in the input supply line. Other input and output voltage may be available, please contact factory. To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required .Suggested capacitor : 220μF/100V. Do not exceed maximum power specification when adjusting output voltage. That “natural convection” is about 20LFM but is not equal to still air (0 LFM). Specifications are subject to change without notice. Package Specifications Mechanical Dimensions Pin Connections [0.20] [0.20] 1.00 [ 0.04] 1 2 3.6 [0.14] Bottom View 1.85 [0.07] 5 6 50.8 [2.00] 3 5.08 5.08 45.72 [1.80] 10.16 [0.40] Pin Function 1 +Vin 2 -Vin 3 Remote On/Off 4 +Vout 5 -Vout 6 Trim 4 ►All dimensions in mm 10.16 [0.40] 10.16 [0.40] 2.54 [0.10] 5.5 [0.22] 25.4 [1.00] 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 : 34g E-mail:[email protected] 2016/06/17 REV:6 Tel:886-6-2923150 Page 6 of 10 11.0 [0.43] ►Tolerance (inches) : 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 Thermal pad Clamp Converter E-mail:[email protected] 2016/06/17 REV:6 Tel:886-6-2923150 Page 7 of 10 ►The advantages of adding a heatsink are: 1. To improve heat dissipation and increase the stability and 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. ® 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= 72.61 32.55 Trim up Vout= Ru= 1 Vox1.01 60.84 MKWI50-XXS05 Trim Table Trim down 1 Vout= Vox0.99 Rd= 138.88 Trim up Vout= Ru= 1 Vox1.01 106.87 MKWI50-XXS12 Trim Table Trim down 1 Vout= Vox0.99 Rd= 413.55 Trim up Vout= Ru= 1 Vox1.01 351.00 MKWI50-XXS15 Trim Table Trim down 1 Vout= Vox0.99 Rd= 530.73 Trim up Vout= Ru= 1 Vox1.01 422.77 MKWI50-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] 2016/06/17 REV:6 Tel:886-6-2923150 Page 8 of 10 ® MKWI50 SERIES DC/DC CONVERTER 50W, Highest Power Density Order Code Table Standard With heatsink MKWI50-24S033 MKWI50-24S033-HS MKWI50-24S05 MKWI50-24S05-HS MKWI50-24S12 MKWI50-24S12-HS MKWI50-24S15 MKWI50-24S15-HS MKWI50-24S24 MKWI50-24S24-HS MKWI50-48S033 MKWI50-48S033-HS MKWI50-48S05 MKWI50-48S05-HS MKWI50-48S12 MKWI50-48S12-HS MKWI50-48S15 MKWI50-48S15-HS MKWI50-48S24 MKWI50-48S24-HS E-mail:[email protected] 2016/06/17 REV:6 Tel:886-6-2923150 Page 9 of 10 ® 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. Overload 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. 2016/06/17 REV:6 Page 10 of 10