DC-DC Buck Converter

Budget $30 - $250 USD
Bids 19
Average Bid $374

DC-DC Buck Converter
Input Voltage: 60~140V (input voltage will be variable)
Input Current: 10A max (input current will be variable)
Output: 26~[url removed, login to view] (Must be regulated by using PWM Frequency)
Output Current: 40A Max.
Efficiency: >98%

Design the Efficiency Curve and specially for 80V and 120v
Design the PCB Schematic
Design the PCB Layout
Export the design to GERBER and create a BOM
Let me know the operating frequency and min. max. duty cycles.
Converter must operate with very low loss.

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This project was awarded to


Ian was very patient throughout the project as I was constantly either changing my mind or requiring guidance to avoid future problems. Ian was very open to suggestions and is more than happy to accept feed back during the project to help me get exactly what I was after. The project was delivered on budget and on time with everything I requested provided without issue. He even over engineered the design to give me something even better than I was hoping for! Ian was very clear and very descriptive with any technical explanations he provided and made sure that I understood what he was doing. Any time he had to change specifications or redesign due to any issues he encountered he made sure to discuss them over with me first and explained why it would not work and how the new solution would benefit me. I will definitely hire Ian and Cloudline again! Thanks Ian :-)
About the Freelancer
cloudline Profile Picture

Years of job experience in engineering research and development, and in online freelance jobs has proven my skills well in providing solutions for electrical/electronics design, prototyping, testing, and technical support. I have the practical know-hows in operational, technical, and time/resource management for project-based tasks. My inquisitiveness and detail-oriented approach, and by using web online tools/applications, simulation and application softwares, are ingredients to an efficient online work. Good communication/presentation skills, and always oriented towards addressing the needs of clients. In short, my goal is delivering excellent service to you.

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Bids on this Project

  • novationengineer Profile Picture


    Islamabad,  Pakistan

    We are the new brand name in Engineering Solutions, we work on automation and system engineering problems. We provide solutions to the industry and govt projects.

    C Programming, .NET, Website Design, and SEO

  • albertogg86 Profile Picture


    La Habana,  Cuba

    Programming MSP430, IAR. Design PCB Layout Altium, Programming in Matlab.

    C Programming, Electronics, Matlab & Mathematica, and Microcontroller

  • geekyexperts Profile Picture


    Lahore,  Pakistan

    I am an electrical engineer. I have experience in embedded system design and PCB design. I have a strong academic background in all electrical engineering subjects and can provide academic help and online tutoring. I also have high level of expertise in MATLAB and Simulink. Hire me for any electronics design project, i will provide help with hardware, software and firmware design. I will also offer services in prototyping the design and make proof of concept hardware and send the hardware to you worldwide. I can also help you with a design for manufacturing purposes.

    Engineering, Electronics, Matlab & Mathematica, and Verilog / VHDL

  • aki542 Profile Picture


    Lahore,  Pakistan

    I am an Electronic Engineer. My expertise are C,C++,Matlab,Verilog and Proteus.I can assist you in the field of embedded systems.I have some excellent circuit designing skills.Avr and Pic,STM32F4 microcontrollers are my choices. Programming is my lifestyle.My objective in life is to create a stand alone system that works on thoughts of human being.

    C Programming, Wireless, Electronics, and Product Sourcing

  • rinaldi76 Profile Picture


    Cassano delle Murge,  Italy

    I am experienced in analogue board design, power supplies, DC-DC converters, inverters, microcontrollers, firmware, amplifiers, sensors, transceivers, C language, assembler, Matlab, Pascal.

    Engineering, Electronics, Matlab & Mathematica, and CAD/CAM

  • papia123 Profile Picture


    Kolkata,  India

    Post graduate in Engineering and having more than 27 year of experience in handling highly sophisticated instrument with electro-mechanical and pneumatic instruments from world leading companies. Provided service to different countries. Presently in own business and running a solar company and designed all the products for the company and spending time on designing different products as well as giving service support to different country with a team of engineers, Spending time of designing new ideas with electronics circuit / embedded design etc is my passion and try to help others on their ideas.

    Internet Marketing, Data Entry, Engineering, and Electronics

  • progsel20 Profile Picture


    rome,  Italy

    Electronic designer for both analogue and digital design. Deeply experience gained in many year as electronic designer for the main defence industries. Technology: - analog from DC to 500MHz (signal conditioning, conversion and buffering) - Digital, extensive use of micro-controller, microprocessor and DSP. Deep knwolodgement of FPGA application I can specify, design develope a project, I can built both prototype and production. I can test it and design the test station. I can help the customer to fully qualify the design according to CE marking or any military test.

    Python, Data Processing, Link Building, and Wireless

  • AliMushtaq12 Profile Picture


    Islamabad,  Pakistan

    We are a team of Electrical Engineers and Graphic Designers. We provide the best possible solutions to our customers in terms of prices and the quality of work. At Techions, you can find the solutions about the following technical fields. 1- Embedded Systems (C/C++ & Assembly) 2- Electronics 3- Hardware Designing (Verilog/VHDL) 4- Software Programming ( C / C++ / C# ) 5- PCB Schematics & Layout Designs 6- MATLAB & Simulink 7- Labview We also excel in the following Graphic designing fields. 1- Presentation (Prezi & Powerpoint) 2- Logo & Illustrations 3- Posters 4- Brochures & Flyers

    Graphic Design, Electronics, Photoshop, and Android

  • Gaber2611 Profile Picture


    Rasheed City.,  Egypt

    I am mechanical engineer, with technical experience on electronics, many years ago, interested in the field of mechatronics, and of course mechanical engineering which is my main specialization, so have Multidisciplinary engineering skills, and looking forward to do good work on here, and deliver good work at the right time.

    Data Processing, SEO, Data Entry, and Engineering

  • raheel2023 Profile Picture


    Rawalpindi,  Pakistan

    During my professional experience, I have earned considerable exposure by developing projects for electronics industry, with focus on embedded application development, IPhone /IPad applications.   Experiences in developing embedded control system applications. System Requirement Study, Firmware development, hardware circuit design. Deployment at customer\'s site Testing and evaluation of hardware components

    Visual Basic, Wireless, Engineering, and Electronics