The USB Type-C interface has become a core feature in modern electronics — from smartphones and laptops to automobiles and medical devices. With its reversible plug design, high-speed data transfer, and power delivery capabilities, USB Type-C integrates multiple functions into a single, compact connector. However, this high level of integration also increases design complexity and manufacturing risks. Without comprehensive testing before shipment, it’s difficult to guarantee that a chip will perform reliably under demanding conditions. This is where MBIST (Memory Built-In Self-Test) and MBISR (Memory Built-In Self-Repair) come in.
In this episode of iSTART Class, we explore how MBIST and MBISR protect USB Type-C controller chips from potential memory and logic faults. At the module level, MBIST has become an essential part of self-testing digital logic, while MBISR provides fault-tolerant repair when SRAM or other repairable resources are involved. Together, they form a robust defense that ensures both cost efficiency and long-term reliability.
From a broader market perspective, the requirements for testing and repair vary across applications. Consumer electronics prioritize cost-effectiveness and basic MBIST coverage, while industrial and medical systems demand higher stability and extended test coverage. In contrast, automotive-grade chips must fully comply with the AEC-Q100 standard, requiring comprehensive MBIST and MBISR mechanisms to withstand extreme temperatures, vibration, and electrical stress.
Through a well-structured test and repair flow — from self-test activation to automatic defect repair and re-verification — USB Type-C controller chips can self-classify during mass production, preserving yield and ensuring reliability.
Backed by ChipStart’s expertise in memory testing and repair technologies, our solutions, including UDA (User-Defined Architecture) and TEC (Test Engine Controller), help customers customize their MBIST and MBISR implementations for maximum performance and manufacturability. From IP-level support to full SoC integration, ChipStart empowers designers to achieve optimal quality and faster time-to-market.