Study the system
Review the charging architecture, negotiated power modes, protection strategy, PCB package, and component plan before committing to hardware.
Digital prototype reference
USB-C power engineering plan100W USB-C PD Battery Charger Module Plan
20V / 5A USB-C PD · 2-4 cell charging · source and sink modesEngineering plan$680
A commercial engineering starter package for a compact 100W USB-C Power Delivery module that manages charging for 2-to-4-cell battery systems. The architecture combines USB-C negotiation, bidirectional power flow, wide-input buck-boost charging, power-path management, and protection without requiring a separate application processor. Buyers can review the complete concept, adapt battery and enclosure requirements, and return the developed design to our Haikou team for prototype and volume-production planning.
Intended usePower banks, portable power stations, smart speakers, field electronics, and battery-powered equipment
ArchitectureUSB-C Power Delivery controller, 20V / 5A negotiated input, 1-to-4-cell buck-boost charging stage, source/sink role support, I2C controller-to-charger coordination, surge protection, system power-path management, and configurable on-the-go output
FormatDownloadable digital engineering package
Where to buyOfficial Buy Me a Coffee shop
Production pathAdapt the framework, then return it to our team for prototyping and volume-production planning
Included in the plan
What the buyer receives.
A structured engineering package intended for careful review, adaptation, and product development.
- 01System requirements brief and functional power-flow diagram
- 02Annotated USB-C PD, charging, protection, and power-path schematic
- 03Editable schematic and PCB design source package
- 04Production Gerber, drill, stack-up, and fabrication notes
- 05Bill of materials with sourcing notes and practical alternatives
- 06Assembly drawing, placement reference, and connector definition
- 07Configuration guide for charging limits, power roles, and battery profiles
- 08Bring-up checklist and electrical validation test matrix
- 09Thermal, battery-safety, EMC, and enclosure integration review notes
- 10DFM handoff brief for prototype costing and bulk production
From files to factory
Study it. Shape it. Build it.
Adapt the product
Set the cell count, battery limits, connector arrangement, source/sink behavior, enclosure geometry, and thermal strategy for your application.
Validate and produce
Bring the adapted package back to our Haikou team for engineering review, prototype assembly, compliance planning, supplier costing, and volume production.
How it works
Purchase the files, then take the idea further.
This purchase provides an original Haikou Yuyoukang Trading Co., Ltd commercial adaptation and engineering-support package. It does not redistribute third-party reference-design files. Buyers are responsible for final electrical, USB-C compliance, battery-safety, thermal, EMC, regulatory, and production validation. Component families may be substituted during engineering review according to availability and project requirements.
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