DC/DC High Efficiency Regulated Output W Minmax MKW Series FEATURES Smallest Encapsulated W Ultra-compact 2" X 1" Package Wide 2:1 Input Voltage Range Fully Regulated Output Voltage Excellent Efficiency up to 92% I/O Isolation VDC Operating Ambient Temp. Range - to + No Min. 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 9-1 Safety Approval PRODUCT OVERVIEW The MINMAX MKW series is a new generation of high performance dc-dc converter modules setting a new standard concerning power density. The product offers fully W in an encapsulated, shielded metal package with dimensions of just 2."x1."x.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 - C to + 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 Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Over Voltage Max. capacitive Efficiency (typ.) (Range) Max. Min. @Max. @No Current Protection @Max. VDC VDC ma ma ma(typ.) ma(typ.) ma (typ.) VDC μf % MKW-12S33 3.3 24 1 3.9 2 89 MKW-12S5 5 37 1 6.2 1 89 MKW-12S12 12 33 37 1 15 2 89 12 MKW-12S15 15 26 3 1 18 (9 ~ 18) MKW-12S24 24 16 36 1 91 MKW-12D12 ±12 ±16 ±145 37 ±15 # 88 MKW-12D15 ±15 ±13 ±1 37 ±18 7# 88 MKW-24S33 3.3 12 75 3.9 2 MKW-24S5 5 18 6.2 1 91 MKW-24S12 12 33 18 85 15 2 91 24 MKW-24S15 15 26 18 75 18 91 (18 ~ 36) MKW-24S24 24 16 1835 85 91 MKW-24D12 ±12 ±16 ±145 18 ±15 # 89 MKW-24D15 ±15 ±13 ±1 18 45 ±18 7# 89 MKW-48S33 3.3 6 3.9 2 MKW-48S5 5 9 6.2 1 91 MKW-48S12 12 33 9 15 2 92 48 MKW-48S15 15 26 9 18 92 (36 ~ 75) MKW-48S24 24 16 918 91 MKW-48D12 ±12 ±16 ±145 9 65 ±15 # 89 MKW-48D15 ±15 ±13 ±1 9 65 ±18 7# 89 # For each output 15/12/7 REV: Page 1 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Input Specifications Parameter Conditions / Model Min. Typ. Max. Unit Input Surge Voltage (1 sec. max.) Start-Up Threshold Voltage Under Voltage Shutdown Start Up Time Input Models -.7 --- 25 Input Models -.7 --- Input Models -.7 --- Input Models --- --- 9 Input Models --- --- 18 Input Models --- --- 36 Input Models --- 8.3 --- Input Models --- 16.5 --- Input Models --- 33 --- Power Up --- --- ms Nominal Vin and Constant Resistive Remote On/Off --- --- ms Input Filter All Models Internal LC Type Remote On/Off Control Parameter Conditions Min. Typ. Max. Unit On 3.5V ~ or Open Circuit Off V ~ 1.2V or Short Circuit Control Input Current (on) Vctrl = 5.V ---.5 --- ma Control Input Current (off) Vctrl = V --- -.5 --- ma Control Common Referenced to Negative Input Standby Input Current Nominal Vin --- 2.5 --- ma Output Specifications Parameter Conditions / Model Min. Typ. Max. Unit Output Voltage Setting Accuracy --- --- ±1. %Vnom. Output Voltage Balance Dual Output, Balanced s --- --- ±2. % Line Regulation Vin=Min. to Max. @Full --- --- ±.5 % Single Output --- --- ±.5 % Regulation Min. to Full Dual Output --- --- ±1. % Cross Regulation (Dual Output) Asymmetrical 25%/% Full --- --- ±5. % Minimum No Minimum Requirement for Single Output Models, for dual Output Models see Table VDC Ripple & Noise - MHz Bandwidth 3.3V & 5V Output Models --- --- mv P-P, 15V & Models --- 1 --- mv P-P Dual Output Models --- 1 --- mv P-P Transient Recovery Time --- 2 --- μsec 25% Step Change Transient Response Deviation --- ±3 ±5 % Temperature Coefficient --- --- ±.2 %/ Trim Up / Down Range (See Page 9) Over Current Protection Short Circuit Protection % of Nominal Output Voltage o Models --- --- + / - Other Models --- --- ± Current Limitation at 1% typ. of Iout max., Hiccup Hiccup Mode 1.5 Hz typ., Output Model:.3 Hz typ., Automatic Recovery General Specifications Parameter Conditions / Model Min. Typ. Max. Unit I/O Isolation Voltage Seconds --- --- VDC 1 Seconds --- --- VDC I/O Isolation Resistance VDC --- --- MΩ I/O Isolation Capacitance KHz, 1V --- --- pf Switching Frequency o Models --- 285 --- KHz Other Models --- 3 --- KHz MTBF(calculated) MIL-HDBK-217F@25, Ground Benign 328, Hours Safety Approvals UL/cUL 9-1 recognition (CSA certificate), IEC/EN 9-1(CB-report) % 15/12/7 REV: Page 2 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Environmental Specifications Parameter Conditions / Model Min. Max. without Heatsink with Heatsink Unit MKW-XXS33 66 73 Operating Ambient Temperature Range MKW-XXS5 () MKW-XXS12 Nominal Vin, % Inom. MKW-XXS15-46 57 (for Power Derating see relative Derating Curves) MKW-XXS24 MKW-XXDXX 52 without Heatsink 12. --- /W with Heatsink. --- /W LFM without Heatsink 9. --- /W Thermal Impedance LFM with Heatsink 5.4 --- /W LFM without Heatsink 8. --- /W LFM with Heatsink 4.5 --- /W LFM without Heatsink 6. --- /W LFM with Heatsink 3. --- /W Case Temperature --- +5 Thermal Protection Shutdown Temperature 1 typ. Storage Temperature Range - +125 Humidity (non condensing) --- 95 % rel. H Cooling RFI Six-Sided Shielded, Metal Case Lead Temperature (1.5mm from case for Sec.) --- 2 EMC Specifications Parameter Standards & Level Performance EMI Conduction EN522, FCC part 15 Class A EMS EN524 ESD EN6-4-2 air ± 8kV, Contact ± 6kV B Radiated immunity EN6-4-3 V/m A Fast transient (7) EN6-4-4 ±2kV A Surge (7) EN6-4-5 ±1kV B Conducted immunity EN6-4-6 Vrms A EMI Filter meets Conducted EMI EN522 class A; FCC part 15 level A Part No. MKW-12SXX MKW-24SXX MKW-48SXX MKW-12DXX MKW-24DXX MKW-48DXX C1 μf/25v 1812 MLCC 4.7μF/V 1812 MLCC 2.2μF/V 1812 MLCC μf/25v 1812 MLCC 4.7μF/V 1812 MLCC 2.2μF/V 1812 MLCC C2 pf/2kv 18 MLCC pf/2kv 18 MLCC pf/2kv 18 MLCC pf/2kv 18 MLCC pf/2kv 18 MLCC pf/2kv 18 MLCC C3 pf/2kv 18 MLCC pf/2kv 18 MLCC pf/2kv 18 MLCC None None None C4 None None None pf/2kv 18 MLCC pf/2kv 18 MLCC pf/2kv 18 MLCC 15/12/7 REV: Page 3 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Power Derating Curve LFM LFM LFM LFM LFM LFM LFM LFM ~ - 1 ~ - 1 Ambient Temperature C Ambient Temperature C MKW-XXS33 Derating Curve without Heatsink MKW-XXS33 Derating Curve with Heatsink LFM LFM LFM LFM LFM LFM LFM LFM ~ - 1 Ambient Temperature C ~ - 1 Ambient Temperature ] MKW-XXS5, MKW-XXS12, MKW-XXS15,MKW-XXS24 Derating Curve without Heatsink MKW-XXS5, MKW-XXS12, MKW-XXS15, MKW-XXS24 Derating Curve with Heatsink LFM LFM LFM LFM LFM LFM LFM LFM ~ - 1 Ambient Temperature C ~ - 1 Ambient Temperature ] MKW-XXDXX Derating Curve without Heatsink MKW-XXDXX Derating Curve with Heatsink 15/12/7 REV: Page 4 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Efficiency Curve @25 MKW-12S33 Efficiency vs Current MKW-12S5 Efficiency vs Current MKW-12S12 Efficiency vs Current MKW-12S15 Efficiency vs Current MKW-12S24 Efficiency vs Current MKW-12D12 Efficiency vs Current MKW-12D15 Efficiency vs Current MKW-24S33 Efficiency vs Current 15/12/7 REV: Page 5 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Efficiency Curve @25 MKW-24S5 Efficiency vs Current MKW-24S12 Efficiency vs Current MKW-24S15 Efficiency vs Current MKW-24S24 Efficiency vs Current MKW-24D12 Efficiency vs Current MKW-24D15 Efficiency vs Current MKW-48S33 Efficiency vs Current MKW-48S5 Efficiency vs Current 15/12/7 REV: Page 6 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Efficiency Curve @25 MKW-48S12 Efficiency vs Current MKW-48S15 Efficiency vs Current MKW-48S24 Efficiency vs Current MKW-48D12 Efficiency vs Current MKW-48D15 Efficiency vs Current 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 %. 3 Ripple & Noise measurement with a 1μF M/C and a μf T/C. 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 Part Number for heat sink only : MK-HS2 for o & MK-HS1 for others type. 7 To meet EN6-4-4 & EN6-4-5 by adding a capacitor across the input pins.suggested capacitor : 3μF/V. 8 Do not exceed maximum power specification when adjusting output voltage. 9 That natural convection is about LFM but is not equal to still air ( LFM). Specifications are subject to change without notice. 15/12/7 REV: Page 7 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Package Specifications Mechanical Dimensions.16 [.] 5.8 5.8 [.] [.] Pin Connections Pin Single Output Dual Output 1 +Vin +Vin 3 2 1 1. [.4] 2 3 Remote On/Off Remote On/Off 4 +Vout +Vout 5 -Vout Common 3.6 [.14] Bottom View 45.72 [1.].8 [2.] 6 Trim -Vout T: 11.mm(.43 inch) for Output Models T:.2mm(. inch) for Other Output Models 1.85 [.7] 6 5 4 All dimensions in mm (inches).16 [.].16 [.] 25.4 [1.] 2.54 [.] 5.5 [.22] T Tolerance: X.X±.25 (X.XX±.1) X.XX±.13 ( X.XXX±.5) Pin diameter 1. ±.5 (.4±.2) Physical Characteristics Case Size ( Output) :.8x25.4x11.mm (2.x1.x.43 inches) Case Size (Other Output) :.8x25.4x.2mm (2.x1.x. inches) Case Material : Aluminium Alloy, Black Anodized Coating Base Material : FR4 PCB (flammability to UL 94V- rated) Pin Material : Copper Alloy with Gold Plate Over Nickel Subplate Weight : g Heatsink (Option HS) Physical Characteristics Heatsink Material : Aluminum Finish : Black Anodized Coating 31.1 [1.22] Weight : 9g T: 18.mm(.71 inch) for Output Models T: 17.2mm(.68 inch) for Other Output Models T 31. [1.22]Max Heat-sink Thermal pad Clamp 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. 15/12/7 REV: Page 8 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series External Output Trimming Output can be externally trimmed by using the method shown below MKW-XXS33 Trim Table Trim down 1 2 3 4 5 6 7 8 9 % Vout= Vox.99 Vox.98 Vox.97 Vox.96 Vox.95 Vox.94 Vox.93 Vox.92 Vox.91 Vox. Volts Rd= 72.61 32.55 19. 12.52 8.51 5.84 3.94 2.51 1.39. KOhms Trim up 1 2 3 4 5 6 7 8 9 % Vout= Vox1.1 Vox1.2 Vox1.3 Vox1.4 Vox1.5 Vox1.6 Vox1.7 Vox1.8 Vox1.9 Vox1. Volts Ru=.84 27. 16.25.68 7.34 5.11 3.51 2.32 1.39.65 KOhms MKW-XXS5 Trim Table Trim down 1 2 3 4 5 6 7 8 9 % Vout= Vox.99 Vox.98 Vox.97 Vox.96 Vox.95 Vox.94 Vox.93 Vox.92 Vox.91 Vox. Volts Rd= 138.88 62.41 36.92 24.18 16.53 11.44 7.79 5.6 2.94 1.24 KOhms Trim up 1 2 3 4 5 6 7 8 9 % Vout= Vox1.1 Vox1.2 Vox1.3 Vox1.4 Vox1.5 Vox1.6 Vox1.7 Vox1.8 Vox1.9 Vox1. Volts Ru= 6.87 47.76 28.6 18.21 12. 8.36 5.55 3.44 1.79.48 KOhms MKW-XXS12 Trim Table Trim down 1 2 3 4 5 6 7 8 9 % Vout= Vox.99 Vox.98 Vox.97 Vox.96 Vox.95 Vox.94 Vox.93 Vox.92 Vox.91 Vox. Volts Rd= 413.55 184.55 8.22.5 47.15 31.88.98 12. 6.44 1.35 KOhms Trim up 1 2 3 4 5 6 7 8 9 % Vout= Vox1.1 Vox1.2 Vox1.3 Vox1.4 Vox1.5 Vox1.6 Vox1.7 Vox1.8 Vox1.9 Vox1. Volts Ru= 351. 157. 93..75 41. 28. 19.29 12.37 7. 2. KOhms MKW-XXS15 Trim Table Trim down 1 2 3 4 5 6 7 8 9 % Vout= Vox.99 Vox.98 Vox.97 Vox.96 Vox.95 Vox.94 Vox.93 Vox.92 Vox.91 Vox. Volts Rd= 5.73 238.61 141.24 92.56 63.35 43.87 29.96 19.53 11.41 4.92 KOhms Trim up 1 2 3 4 5 6 7 8 9 % Vout= Vox1.1 Vox1.2 Vox1.3 Vox1.4 Vox1.5 Vox1.6 Vox1.7 Vox1.8 Vox1.9 Vox1. Volts Ru= 422.77 189.89 112.26 73.44.15 34.63 23.54 15.22 8.75 3.58 KOhms MKW-XXS24 Trim Table Trim down 1 2 3 4 5 6 7 8 9 % Vout= Vox.99 Vox.98 Vox.97 Vox.96 Vox.95 Vox.94 Vox.93 Vox.92 Vox.91 Vox. Volts Rd= 333.39 148. 87.26 56. 38.4 25.73 16.94.35 5.22 1.12 KOhms Trim up 2 4 6 8 12 14 16 18 % Vout= Vox1.2 Vox1.4 Vox1.6 Vox1.8 Vox1.1 Vox1.12 Vox1.14 Vox1.16 Vox1.18 Vox1.2 Volts Ru= 243. 8. 63.43. 27.38 18.37 11.93 7. 3.34.34 KOhms 15/12/7 REV: Page 9 of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Order Code Table Standard With heatsink Without Remote On/Off MKW-12S33 MKW-12S33-HS MKW-12S33-N MKW-12S5 MKW-12S5-HS MKW-12S5-N MKW-12S12 MKW-12S12-HS MKW-12S12-N MKW-12S15 MKW-12S15-HS MKW-12S15-N MKW-12S24 MKW-12S24-HS MKW-12S24-N MKW-12D12 MKW-12D12-HS MKW-12D12-N MKW-12D15 MKW-12D15-HS MKW-12D15-N MKW-24S33 MKW-24S33-HS MKW-24S33-N MKW-24S5 MKW-24S5-HS MKW-24S5-N MKW-24S12 MKW-24S12-HS MKW-24S12-N MKW-24S15 MKW-24S15-HS MKW-24S15-N MKW-24S24 MKW-24S24-HS MKW-24S24-N MKW-24D12 MKW-24D12-HS MKW-24D12-N MKW-24D15 MKW-24D15-HS MKW-24D15-N MKW-48S33 MKW-48S33-HS MKW-48S33-N MKW-48S5 MKW-48S5-HS MKW-48S5-N MKW-48S12 MKW-48S12-HS MKW-48S12-N MKW-48S15 MKW-48S15-HS MKW-48S15-N MKW-48S24 MKW-48S24-HS MKW-48S24-N MKW-48D12 MKW-48D12-HS MKW-48D12-N MKW-48D15 MKW-48D15-HS MKW-48D15-N 15/12/7 REV: Page of 11
DC/DC High Efficiency Regulated Output W Minmax MKW Series Test Setup Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with a inductor Lin (4.7μH) and Cin (2μF, ESR < 1.Ω at KHz) to simulate source impedance. possible battery impedance. Current ripple is measured at the input terminals of the module, measurement bandwidth is - KHz. To Oscilloscope +Vin +Out Capacitor Cin, offsets + + Lin Battery Cin Current Probe Peak-to-Peak Output Noise Measurement Test Use a 1μF ceramic capacitor and a μf tantalum capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is - MHz. Position the load between mm and 75 mm from the DC/DC. +Vin Single Output +Out Copper Strip Copper Strip Scope Resistive +Vin Dual Output +Out Com. Copper Strip Copper Strip Copper Strip Scope Scope Resistive 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 terminal. The switch can be an open collector or equivalent. A logic low is V to 1.2V. A logic high is 3.5V to. The maximum sink current at the on/off terminal (Pin 3) during a logic low is -μa. 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. Ω at KHz) capacitor of a 33μF for the input devices and a μf for the and devices. + DC Power Source - + 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. recommended to use 4.7μF capacitors at the output. To reduce output ripple, it is + +Vin +Out + +Vin +Out DC Power Source - Single Output DC Power Source - Dual Output Com. Maximum Capacitive The MKW 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 5. The derating curves are determined from measurements obtained in a test setup. Position of air velocity probe and thermocouple 15mm /.6in mm / 2in Air Flow DUT 15/12/7 REV: Page 11 of 11