Naxinwei: Launches China’s First TÜV Rheinland–Certified ASIL D–Level Isolated Gate Driver, the NSI6911F Series

Naxinwei announced the launch on April 21, 2026. China's first Based on a domestically produced supply chain, Certified by TÜV Rheinland and achieve ISO 26262 ASIL D-rated isolated gate drivers—the NSI6911F series.

This product series is specifically designed for high-voltage applications such as main drive inverters, on-board chargers, and DC-DC converters in new-energy vehicles. It delivers a peak drive capability of up to 19 A, exhibits common-mode transient immunity (CMTI) of ±150 kV/μs, and integrates a 12-bit high-precision isolated sampling ADC along with an advanced diagnostic architecture, thereby providing a solution that enhances safety and system integration for the electric drive systems of new-energy vehicles.

As new-energy vehicles accelerate their transition to 800 V high-voltage platforms and SiC power devices, the switching speeds of electric-drive systems have increased significantly, leading to continuously rising dv/dt levels and placing higher demands on gate drivers in terms of electromagnetic interference immunity, drive performance, and system reliability. Meanwhile, according to the latest national standards—including GB/T 43254-2023 “Functional Safety Requirements and Test Methods for Electric Vehicle Drive Motor Systems” and GB 21670-2025 “Technical Requirements and Test Methods for Passenger Vehicle Braking Systems”—the functional safety level of electric-drive systems must meet ASIL C, or even the highest level of ASIL D, in critical scenarios such as preventing unintended torque and enabling regenerative braking with coordinated energy recovery.

Against this backdrop, isolated gate-driver chips that deliver high-level functional safety and directly support system design are emerging as a critical enabler for automakers and Tier 1 suppliers to achieve safety compliance and scale production.

Authorized certification by TÜV Rheinland, meeting the highest ASIL D functional safety level.

The NSI6911F series has been rigorously certified by TÜV Rheinland to meet the ISO 26262 ASIL D safety level, providing customers with a hardware foundation that complies with the highest functional safety requirements.

This product series adheres rigorously to the ISO 26262 V-Model development process, with systematic analysis and stringent verification conducted at every stage—from defining the SEooC assumption and decomposing hardware safety requirements to performing functional safety validation. Coupled with Naxinwei’s comprehensive functional safety documentation framework and robust technical support capabilities, the NSI6911F helps OEMs and Tier 1 suppliers efficiently complete system-level functional safety assessments for electric drive systems, thereby significantly shortening the development cycle.

The NSI6911F series has obtained TÜV Rheinland ASIL D functional safety certification.

Leading drive capability and a comprehensive protection architecture deliver a highly reliable electric drive system.

The NSI6911F series delivers peak drive capability of up to 19 A and features high CMTI performance of ±150 kV/μs, meeting the stable drive requirements of SiC and IGBT devices in high-frequency, high-dv/dt environments. The product integrates key protection functions such as Miller clamping, over-temperature protection, adjustable DESAT/SC/OC, adjustable UVLO, adjustable soft shutdown, and two-level shutdown, enabling Flexibly and effectively optimize the switching performance of power devices. , reducing switching losses and the risk of short-circuit failure, thereby providing comprehensive protection for the electric drive system.

In terms of fault handling, the NSI6911F series supports Three-State Output Strategy , enabling the drive system to follow a more rational response path under abnormal conditions and significantly enhancing the robustness of the vehicle’s electric drive system.

Meanwhile, the NSI6911F series offers a wide range of power-management and protection-threshold configuration options, enabling flexible design solutions for diverse application scenarios and simplifying system replacement and development workflows. The NSI6911F supports a primary-side input voltage of up to 32 V and provides a 5-V LDO regulator; the secondary side features a 5-V LDO regulator as well as a wide-range, adjustable VCC2 LDO spanning 14–21 V. These comprehensive integrated power supplies help reduce the need for upstream pre-DC-DC converters on the low-voltage side and dedicated high-voltage power supplies, while the flexible, adjustable output voltages enhance system versatility. Reduce power supply design changes in the upper-level system 。

Overview of the NSI6911F Functional Safety Driver from Naxin Micro

Integrates a 12-bit high-precision isolated ADC for “on-site sensing,” enhancing system real-time performance.

NSI6911F Series Integrates an industry-leading, ASIL B–qualified 12-bit high-precision isolated ADC. , enabling local high-precision sampling and isolated transmission of critical voltage and current signals in the system. Compared with traditional discrete solutions, this design significantly reduces the number of external components such as operational amplifiers, isolators, and standalone ADCs, thereby effectively lowering system complexity and BOM costs. The ASIL B–rated ADC also features on-chip diagnostic capabilities and noise-suppression technologies, allowing the NSI6911F to simultaneously enhance sampling robustness and anti-interference performance.

Built-in isolated ADC for high dv/dt environments Can provide more stable, low-latency data feedback. , thereby providing a reliable basis for control and protection decision-making. In addition, this integrated solution directly supports functional safety design requirements, enhances the observability of critical parameters and improves diagnostic coverage, helping customers build electric drive systems with higher integration and greater reliability.

Pin-compatible design and a fully domestic supply chain ensure rapid deployment and reliable delivery.

The NSI6911 series features an SSOW32 package, offering pin-to-pin and BOM-to-BOM compatibility with competing devices. This enables customers to quickly replace existing components in their current designs without requiring PCB layout modifications, thereby significantly lowering the barrier to adoption and shortening the development cycle.

In terms of the supply chain, this product series is built on a fully domestic ecosystem spanning wafer fabrication through packaging and testing, delivering enhanced controllability and stability while effectively mitigating supply risks arising from external environmental fluctuations. Coupled with Naxinwei’s localized technical support and agile delivery capabilities, the NSI6911F series empowers OEMs and Tier 1 suppliers to accelerate product iteration and ramp up mass production—while ensuring both performance and functional safety.

NSI6911F Series Selection Table

Solidify the security foundation and continuously build and refine capabilities in the functional safety system.

As a leading player in China’s automotive analog chip industry, Novosem has consistently placed great emphasis on building a robust functional safety management system and enhancing its product development capabilities. As early as 2021, Novosem obtained the ISO 26262 functional safety management system certification at the ASIL D “Managed” level, issued by TÜV Rheinland. In 2025, Novosem officially passed TÜV Rheinland’s audit. ISO 26262 ASIL D “Defined–Practiced” Level Functional Safety Management System Certification , demonstrating that NaCore Micro has comprehensively established a complete capability framework spanning from management systems to engineering practices.

This mature system has successfully empowered the full lifecycle development of multiple key products, establishing a reliable closed-loop that spans from standards to implementation and from processes to finished products. The NSI6911F series chips have obtained ASIL D product certification from the authoritative TÜV Rheinland, which stands as the best testament to the strength of this system.

Naxinwei’s core functional safety capabilities are embodied in three key dimensions:

l    Deeply Integrated Forward Development Process The company has systematically integrated the ISO 26262 functional safety standard into the entire R&D process, ensuring that safety requirements are embedded in every stage of development and, through continuous iterative optimization, that the process consistently enhances the product’s high safety and high reliability.

l   End-to-end capabilities spanning the entire system-to-chip stack Naxinwei possesses end-to-end technical capabilities spanning system-level safety concept definition, chip architecture, and chip design and implementation, enabling it to provide customers with comprehensive functional safety solutions that integrate both systems and chips.

l   A Reliable and Collaborative Organizational Culture A dedicated functional safety team is engaged from the product definition stage and provides end-to-end support throughout the entire lifecycle. Beyond individual projects, the company is committed to fostering a robust functional safety culture at Naxin Micro, establishing a Functional Safety Competence Center (FuSa CoC) to create cross-departmental collaboration and independent audit mechanisms, thereby ensuring that every safety-related activity is controlled, trustworthy, and fully traceable.

NaCore Micro’s ISO 26262 V-Model Development Process

Naxinwei Obtains TÜV Rheinland ISO 26262 ASIL D “Defined-Practiced” Certification

In the rapid evolution of intelligent vehicle technology, safety is an uncompromising non-negotiable requirement and one of the most complex challenges. Naxinwei leverages its end-to-end functional safety capabilities spanning from chips to systems, a process framework certified by authoritative bodies, and an ever-expanding SafeNovo® portfolio of functional safety products to build a comprehensive “ Functional Safety Empowerment System “By deeply integrating process control with technology focus, we ensure that every chip serves as the most reliable safeguard for system security. NaXinWei is committed to collaborating with industry partners, leveraging robust semiconductor technology and a comprehensive functional safety development framework to protect the safety of every journey.”

(Source: Naxinwei official website)