Wireless Qi Powerbank electronic hardware design


We are looking for an hardware designer to develop the charging circuit for a slim Wireless Qi powerbank. The discharge rate can be at 5W without fast charging support.

Charging circuit requirement:

- The design should accomodate battery protection circuit for Li-Ion polymer battery(3V cutoff, 4.2V max).

- The design should accomodate automatic Li-Ion polymer battery charding when the USB-C port is plugged in.

- The design could have an interface to another MCU to show charging status and battery capacity. The interface either analog or digital and can be suggested by designer.

- The design should charge Wireless Qi receivers once detected.

- The design should have Wireless Qi safety features like FOD.

- Design should be optimal for PCB area, less area and less height of components.

- The circuit should have a regulated output from battery for other electronics circuitory of 7.5V, 3.8V and 3.3V

- The circuit should have ultra low sleep current in the range of 10s of microamps when no charging/discharging powerbank functionality is active

- The wireless transmitter will be trigerred via external MCU

Battery specification:

- 0.5C charge and 0.5C discharge.

- No PCM

- No NTC


1. Schematic and technical document for design

2. BOM(including wireless charge pad) with estimated pricing for 1000 MOQ

3. 3D PCB area required for PCB

4. Cost optimized design

Evner: PCB Layout, Elektronik, Elektrisk Ingeniørarbejde, Kredsløbs Design, Produkt Design

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Om arbejdsgiveren:
( 1 bedømmelse ) Singapore, Singapore

Projekt ID: #26314439

22 freelancere byder i gennemsnit $209 på dette job


Hi, i have read your project description about ===wireless I have a 6 years of experience in this field I have understand the project requirement & interested to work for this project. I will start right now and I will Flere

$30 USD på 1 dag
(94 bedømmelser)

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$30 USD in 7 dage
(3 bedømmelser)

Best Wireless Qi Bank Design Expert at your doorstep! Dear Client, I couldn’t stop myself from bidding after going through the description as they are an exact match with my skillset and experience. I have seen your P Flere

$180 USD in 2 dage
(7 bedømmelser)

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$140 USD in 7 dage
(4 bedømmelser)

Hello dear project owner. Thank you for posting that project. You can read about me below. About your project–I am doing schematic, PCB and SW\FW design every day (I design and make industrial electronic equipment – Ul Flere

$30 USD in 7 dage
(16 bedømmelser)

Dear Client, I can develop Wireless Qi Powerbank I have read and understood your requirements and could do it for you in the least time and utmost superior quality. I am having more than 15 years of experience in PCB Flere

$180 USD in 2 dage
(1 bedømmelse)

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$150 USD in 2 dage
(2 bedømmelser)

Hello, I am an Electrical and Electronics Engineer and I completed my master's degree. I designed many electronic circuits and I have academic publications on this subject. You can also see this from my portfolio. Tha Flere

$200 USD in 10 dage
(6 bedømmelser)

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$140 USD in 7 dage
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Hello As I have good experiences in this field-Wireless Qi powerbank, so I am very glad to meet your project. I have the energy and wisdom to design products for today’s technical challenges. You can expect a professi Flere

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$400 USD in 12 dage
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Hi, I'm HIMAVANTH experience in Designing PCB's for QI(15W charger with auto FOD feature), USB PD & USB-A for Smart Power Bank. Also, have Experience in Designing circuit for EMI and EMC free circuits. Expertise in cho Flere

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$156 USD på 1 dag
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$156 USD in 3 dage
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