USB-C Platform with Liquid Detection and Debug Access

USB Type-C^® is widely used in compact consumer and portable devices because it supports charging, data transfer, and system access through a single connector. In everyday use, moisture or small liquid droplets can enter the USB-C port and affect normal operation. At the same time, development and manufacturing often require additional connectors for programming and testing, increasing system complexity and cost. This design handles liquid detection and debug access through the same USB-C interface, improving connector robustness while reducing hardware complexity, PCB space, and manufacturing effort.

The charging cradle design is optimized for power-focused applications, delivering efficient charging and compact system integration for products that use USB-C as the primary interface. It is well-suited for True Wireless Stereo (TWS), hearing aid, and wearable charging cradles, where reliable charging, a small form factor, and simplified manufacturing are key requirements.

The audio system design is optimized for data-focused applications, supporting stable USB-C communication and digital audio streaming in compact systems. It is intended for speakerphones and wired headsets, where consistent audio performance and efficient system integration are essential.

System Benefits:

• Fast, low-power USB-C liquid detection implemented using a programmable mixed-signal device improves connector safety and long-term reliability, while supporting flexible design and efficient manufacturing in space-constrained systems.
• USB-C debug accessory mode enables connector-less programming, debugging, and production testing, reducing development effort and manufacturing complexity.
• Integrated battery charging and power management simplify power design and support efficient operation.
• Bluetooth^® Low Energy (LE) connectivity enables system monitoring, control, and configuration.