VIA Technologies. has been granted a patent for a protection circuit in a hub chip. This circuit includes a voltage generation system, a PMOS transistor, and a detection circuit, which work together to manage and adjust output voltage based on the power and data pin voltages. GlobalData’s report on VIA Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on VIA Technologies, Device power optimization was a key innovation area identified from patents. VIA Technologies's grant share as of June 2024 was 81%. Grant share is based on the ratio of number of grants to total number of patents.
Protection circuit for hub chip with voltage adjustment
The patent US12021367B2 describes a protection circuit designed for integration within a hub chip, specifically focusing on a transmission interface that includes a power pin and two data pins. The circuit features a voltage generation mechanism that adjusts an output voltage based on the power pin and the first data pin's voltage levels. Central to the design is a first PMOS transistor, which connects the power pin to the first data pin, and a detection circuit that monitors the power pin's voltage. The circuit is engineered to cut off the channel between the first and second electrodes when the power pin reaches a specified voltage, thereby disabling a body-diode connected to the first bulk.
Further enhancements to the protection circuit include additional PMOS transistors and detection circuits that manage the second data pin in a similar manner. The design allows for dynamic adjustments of output voltages based on the power pin's state, ensuring that the output voltages remain lower than the respective data pin voltages. The circuit also incorporates a driving mechanism that modifies the first data pin's voltage in response to logic data when the power pin exceeds a certain threshold. This multi-layered approach to voltage management and protection aims to enhance the reliability and functionality of the hub chip in various electronic applications.
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