CRPS-to-USB-C Charge Companion Teardown: Modular Buck-Boost With INJOINIC and WCH Silicon
2026-09-25 · Compiled by Best IT Parts from public industry reporting
An INKEE teardown video has taken apart a CRPS-to-USB-C charge companion, a converter that lets standard server CRPS power supplies feed USB-C devices. CRPS is a common form factor for redundant power supplies in rack servers, so an adapter that exposes its output over USB-C extends the useful life of standard units. The product is built around a modular, split-board architecture rather than a single PCB, which makes the power section easier to service and to scale.
Each small board carries an INJOINIC IP2366 power-management IC paired with domestic power transistors. Together they form a complete, independent buck-boost conversion loop, so every module can regulate its own voltage conversion. That architecture matters for repair and distribution channels: a modular buck-boost stage is simpler to replace and to qualify than a monolithic layout, and it lets the same platform be reused across different output configurations.
Control and interfacing are handled by two WCH parts. A CH334P serves as the USB 2.0 MTT hub, while a CH32V208CBU6 MCU drives several functions at once: the color display, buzzer alert tones and USB communication. The result is a compact adapter that pairs a server-grade input with consumer-friendly USB-C output and a small status screen.
For buyers sourcing server power spares and USB-C adapters, the teardown is a useful reference on how CRPS modules are being repurposed into multi-port chargers. It also shows the current component mix, leaning on INJOINIC for power management and WCH for control and hub duties.
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Technical details are reproduced as reported. Verify specifications against the original source before design or procurement decisions.