
Đã đóng
Đã đăng vào
Thanh toán khi bàn giao
I am looking for an experienced PCB Designer/Hardware Engineer to design a custom power management board for a BLDC fan system with integrated battery backup. Key Functional Requirements: Battery System: 4S LiFePO4 (32140 cells, 3.2V nominal). Must include integrated BMS (B-, B1, B2, B3, B+) and a CC/CV charging circuit. AC Sensing: Use an Optocoupler (e.g., PC817) to sense 220V AC mains from a wall switch. Automatic Transfer (ATS): When 220V is present, the fan runs on mains and the battery charges. Upon AC failure (while the wall switch is ON), the board must automatically flip a relay to the internal 12V-to-220V inverter. Terminals: 4-terminal AC block (2 for 220V Input, 2 for Fan Output) + Battery connections. Inverter Logic: The inverter should stay in "Standby" until triggered by AC loss. Deliverables: Complete Schematic and PCB Layout (Gerber, BOM, and Pick-and-Place files). Component selection for high-voltage isolation (Creepage/Clearance standards). Thermal management strategy for the inverter MOSFETs. Required Skills: Power Electronics, AC-DC/DC-AC Conversion, LiFePO4 Charging, KiCad/Altium/EasyEDA.
Mã dự án: 40334706
9 đề xuất
Dự án từ xa
Hoạt động 12 ngày trước
Thiết lập ngân sách và thời gian
Nhận thanh toán cho công việc
Phác thảo đề xuất của bạn
Miễn phí đăng ký và cháo giá cho công việc
9 freelancer chào giá trung bình ₹1.794 INR cho công việc này

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.
₹6.000 INR trong 7 ngày
7,4
7,4

Experienced PCB Designer & Hardware Engineer here. I can design your BLDC fan power management board with 4S LiFePO4 BMS, CC/CV charging, AC sensing (PC817), and seamless ATS with inverter control. I’ll deliver a complete schematic, PCB (Gerber, BOM, PnP), ensuring proper isolation, safety, and thermal design. Ready to start.
₹1.500 INR trong 7 ngày
4,0
4,0

Hi there, I can design your BLDC fan power board with 4S LiFePO4 BMS, CC/CV charging, AC sensing, and automatic transfer to inverter. I specialize in power electronics and have experience with battery systems and high-voltage isolation design. I use LTspice for validation and EasyEDA for PCB design, delivering production-ready files (Gerbers, BOM, and PnP). Best regards, Michael.
₹1.500 INR trong 7 ngày
2,5
2,5

I have experience with designing BLDC driver circuits and DC-DC converters I have a fully functional bldc circuit readyly available with me Do message me to discuss some more details of this project
₹1.050 INR trong 7 ngày
0,0
0,0

I am good at creating this kind of power management system. I am working for like a year in pcb design company.
₹2.000 INR trong 7 ngày
0,0
0,0

Hello, This project matches my experience in PCB design and power electronics. I can design the full schematic and PCB (Gerber, BOM, PnP) with proper isolation, relay-based ATS logic, and safe LiFePO4 integration. I focus on reliable, manufacturable designs — especially for AC-related systems. Quick question before starting: Do you want a full inverter design or integration of an existing module? I can start immediately and deliver a clean first revision quickly. Best regards
₹1.200 INR trong 7 ngày
0,0
0,0

I am Electronics and Communication Engineer with quite a lot of projects in PCB Designing. i have also worked at ISRO in the past.
₹800 INR trong 7 ngày
0,0
0,0

Designed and developed GaN driver boards using IGCSS01, 1EDN series drivers with STM32H7 control Strong experience in STM32 (H7 series): SPI, ADC, real-time control loops Worked on industrial communication interfaces (SPI-based Ethernet – LAN9252, low-level protocol handling) Expertise in power electronics design: gate drivers, switching circuits, protection and layout optimization Proficient in KiCad, LTspice for schematic design, simulation, and PCB layout Solid understanding of signal integrity, high-speed routing, and EMI considerations Experience with RTOS concepts and low-level embedded architecture
₹1.050 INR trong 7 ngày
0,0
0,0

Hi, Thank you for sharing the detailed requirements. I have reviewed the project specifications for the BLDC fan power management board. I have extensive experience in PCB design, specifically with power electronics and battery management systems. I can certainly handle the 4S LiFePO4 charging circuit, the AC sensing logic with PC817, and the automatic relay switching for the inverter. I will ensure the design follows strict creepage and clearance standards for 220V isolation and implement an effective thermal strategy for the MOSFETs. I typically work with EasyEDA for design and can provide all the deliverables, including Gerber, BOM, and Pick-and-Place files. I am ready to start this project immediately. Let me know if you’d like to discuss any specific components before I begin the schematic
₹1.050 INR trong 7 ngày
0,1
0,1

Mumbai, India
Thành viên từ thg 12 16, 2019
₹600-1500 INR
₹1500-12500 INR
₹600-1500 INR
₹600-1500 INR
₹1500-12500 INR
$10-30 USD
$250-750 USD
₹1500-12500 INR
$2-8 USD/ giờ
$10-40 USD
$10-30 USD
₹5000-10000 INR
$250-750 USD
₹1500-12500 INR
₹12500-37500 INR
$1500-3000 USD
$250-750 USD
$250-750 USD
€250 EUR
$15-25 AUD/ giờ
$750-1500 USD
$30-250 USD
₹40000-250000 INR
$30-250 USD
₹4000-8000 INR