Find Jobs
Hire Freelancers

Design of a multi-channel ultra-high efficiency LED driver (PCB schematic)

€30-250 EUR

已关闭
已发布超过 7 年前

€30-250 EUR

货到付款
I need a design of a multi-channel, ultra-high efficiency switching LED driver (Constant Current) with the following specs: Topology: AC to DC (CC) single stage with PFC Vin = 100 VAC to 240 VAC Output quantity: 4 Vout = 24 V DC to 36V DC Iout = 0.0 A to 1.4 A (per channel) CC adjustable: yes, with analog or PWM control voltage Overall Efficiency: >95% (at all working point with load I > 0.2A) Power Factor: > 0.95 Size: < 100 mm x 40 mm x 20 mm Component Cost: < $10 at 1000 pcs I know, that specification are very difficult to reach and I'm available to discuss exceptions and tradeoffs. Some hints for topology (not binding, just suggestions): [login to view URL] [login to view URL] [login to view URL] [login to view URL] Deliverables: a complete schematic with all components and calculated values. Format: Altium Designer preferred, otherwise a pdf with schematic Please evaluate well if you are able to do the job and please propose a budget.
项目 ID: 11827535

关于此项目

15提案
远程项目
活跃7 年前

想赚点钱吗?

在Freelancer上竞价的好处

设定您的预算和时间范围
为您的工作获得报酬
简要概述您的提案
免费注册和竞标工作
15威客以平均价€483 EUR来参与此工作竞价
用户头像
Hello! Please contact me for discuss details. ============================== Best regards, Oleksandr
€147 EUR 在14天之内
4.9 (34条评论)
7.2
7.2
用户头像
Hello! How are you?! I can help you right away with your project. Please look at my profile and send me a message! I have 6 years experience with pcb design and designed a lot of them including 3 versions of a LED driver. Have a great day!
€111 EUR 在5天之内
5.0 (95条评论)
7.2
7.2
用户头像
Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent high frequency transformers design, circuits design, multi-channel LED Drivers, Regulated power supplies design with universal input to DC output, Audio amplifier, drives design, Filters design for harmonic analysis and Power factor correction, SMPS, LED drivers, DC-DC, AC-DC converters design, PFC interleaved boost converter, Battery management system, Battery chargers, UPS design, sine wave Inverters, solar grid tie inverters, Solar battery chargers and street light systems design from few watts to KW range using Buck, Boost, and Buck –boost, Interleaved boost/buck, Fly back Push Pull and H-bridge inverters. I have work experience to design from few watts to KW range meeting all compliances like EMI/EMC and safety standards UL etc.
€1,333 EUR 在45天之内
4.9 (61条评论)
6.8
6.8
用户头像
Hello, Have a great day. I am leading a team for developing Electronic circuits. We will deliver a complete PCB design. Please feel free to contact us. Best Regards, Shahbaz.
€2,000 EUR 在45天之内
4.6 (60条评论)
7.0
7.0
用户头像
I have 4+ years working experience in schematic and pcb layout design. Fluent in Mentor Expedition, Cadence Allegro, Mentor PADS, Altium Designer pcb layout tools. Experience in creating footprints library, pcb layout, constraint editing, gerber generation. Basic understanding on DFM, DFT and appication on Valor DFM tool. Experience in routing high speed signals such as usb3.0, sata, pcie, lvds etc. Experience in routing double-sided, 4-layers, 6layers,8layers and more layers pcb stackup. strong high speed layout skills including differential pair, impedance control, matched delay, etc Experience with isolation requirements, Experience designing high density boards that incorporate microprocessors, DDR2 and DDR3 memory and peripherals, including layout experience with BGA parts Experience in board layout involving communication protocols such as Ethernet, USB, I2C, etc Experience with Switch Mode Power Supply layout techniques Experience with high-speed digital hardware design
€100 EUR 在4天之内
5.0 (21条评论)
6.1
6.1
用户头像
Dear Valued Employer, My name is Martin Botsov and I am an engineering physicist with extensive experience in the field of circuit design, circuit prototyping and PCB design. As I understand from the project description you are looking for an electronics engineer capable of designing a custom LED driver board according to all stated requirements. So, without further ado here's how the workflow would look like, if you happen to choose me as a partner for your project: 1. Initial discussion 2. Block diagram of proposed solution 3. Schematic drafts 4. Component library creation 4.1 Schematic symbol library creation 4.2 Footprint library creation 5. Schematic drawings 6. Budget analysis 7. Schematic drawings optimization (if necessary) 8. Review of final schematic drawing 9. Layout design 9.1 Components placement and arrangement 9.2 Review of proposed layout design arrangement 9.3 Components routing 10 Review of final layout design 11. Design rule check 12. Final project review 13. Production files (GERBER, NC DRILL, BOM, ASM, PICK & PLACE, SCH, STEP) Your project will be carried out on Altium Designer. Don't hesitate to contact me with questions regarding any details around your project. You could also check out my profile on Freelancer and LinkedIn for more details around my professional experience. I am looking forward to hearing from you soon. Thank you for your time. Kind Regards Martin Botsov P.S. I'm able to provide a particular solution upon request.
€840 EUR 在42天之内
5.0 (17条评论)
5.6
5.6
用户头像
Hello, Greetings of the day, I have gone through the description & found interesting. I have done many project related to mechanical engineering, 3D modelling, product designing, any kind of simulation, design analysis. I am a standard member here and a full time freelancer, so you can contact me anytime. to brief about me: I am mechanical design engineer by profession and graduate in mechanical engineering with PG in CAD/CAM, ANSYS & Solidworks. I have expertise in many design tools like solidworks, CATIA, ANSYS, 3DMax, Creo MATLAB etc. As i have engineering background with six years of industrial experience and very confident about any project related to mechanical engineering field. I have preferred freelancer badge, you can see next to my profile name. You can check my profile and portfolio:- https://www.freelancer.com/u/ashrafshekh.html My bid is negotiable and it depends on the required deliverable. Looking forward to hear from you & feel free to contact me Thanks & regards Ashraf Shaikh
€263 EUR 在3天之内
4.8 (11条评论)
5.4
5.4
用户头像
you had mentioned 4 output ,I need to know wheather each channel has individual CC adjustment settings or common for all
€55 EUR 在7天之内
4.9 (32条评论)
4.6
4.6
用户头像
Hello, I have many years design experience in various applications. I have designed, high voltage (>1500VDC), high-power (>300W), galvanically isolated designs, IP65, harsh environments, distributed controls and others. I have handled constant power designs, constant current and constant voltage applications. I am also experienced in DC/DC (SEPIC, CUK, flyback, isolated, buck) designs. Please feel free to look through my portflio. I can provide finished PCBs assembled and tested (for non-special requirements), panelized layouts ready for SMD assembly, and extra documentation for CE certifications and the like. I use Eagle 6.5 for schematic and layouts, LTSpice for simulation. I can also provide designs for enclosures or mechanical parts using AutoCAD (3D in MDT). You did not mention, so will this be a Class 2 application? And will mains isolation be required? These requirements plus the PFC (I assume you will want active PFC because of the small size) will almost make your target price impossible for such a small quantity. Let me know if I can be of assistance. Best regards, Stuart Borden.
€500 EUR 在20天之内
5.0 (6条评论)
4.3
4.3
用户头像
Hi! Im an electrical and electronic masters graduate in UWE. I have the experience of programming in C/C++/Assembly/Arduino/PIC C/MikroC/MATLAB for more than three years. I also have the knowledge and experience of ELECTRICAL AND ELECTRONICS circuit analysis and design. I also have experience in embedded systems using microcontrollers like PIC, ATMEL, ARDUINO and most of the other types. I have made different kinds of devices varying from radios to drones and more. I am very keen to work on implementation projects I also have studied Artificial intelligence. Im very thorough with subjects like Neural networks, Fuzzy systems, Genetic algorithms and Expert Systems. I have done BCS (British computer society) diploma level. I have the knowledge on PHP/HTML5/mySQL for website development. I have completed many freelancer assignments successfully. If you are interested in hiring me, please send me a message. I have made a lot of reports in the recent past. I have good experience in using Microsoft office softwares like Word, Excel and Powerpoint. I can write reports of any length without mistakes. Thank you!
€135 EUR 在3天之内
4.7 (28条评论)
4.7
4.7
用户头像
Technical consultant with experience in automotive led driving. Please contact me for a discuttion as my offer stands depending on some tradeoffs - mainly efficiency vs cost as i belive this is not really achievable. Hope to hear from you soon. thank you
€334 EUR 在30天之内
4.3 (3条评论)
2.8
2.8
用户头像
Very small chances to keep that small size for 50watts (per 1 channel!) driver, another bottleneck is unit price, imo it starts from ca 5 usd per channel .
€277 EUR 在10天之内
5.0 (1条评论)
0.8
0.8
用户头像
I already developed this kind of board using STP16CP05 for traffic light application.
€555 EUR 在30天之内
0.0 (0条评论)
0.0
0.0

关于客户

SWITZERLAND的国旗
Bellinzona, Switzerland
0.0
0
付款方式已验证
会员自10月 18, 2016起

客户认证

谢谢!我们已通过电子邮件向您发送了索取免费积分的链接。
发送电子邮件时出现问题。请再试一次。
已注册用户 发布工作总数
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
加载预览
授予地理位置权限。
您的登录会话已过期而且您已经登出,请再次登录。