In a significant development for the automotive industry, Diodes Incorporated has announced the expansion of its PowerDI8080-5 MOSFET portfolio with a new 100 V N-channel device. This latest offering is engineered to deliver industry-leading on-resistance, a critical factor for efficiency in demanding 48 V automotive applications. The introduction of this high-performance component underscores the ongoing innovation in EV Power Electronics, crucial for enhancing the capabilities of modern electric and hybrid vehicles.
The new device, designated DMTH10H1M7SPGWQ, boasts a remarkably low maximum RDS(on) of 1.5 mΩ. This characteristic is particularly vital for applications that require minimal power loss, directly translating to improved energy efficiency and reduced heat generation. Such advancements are indispensable for the sophisticated power management systems found in contemporary automotive designs.
Revolutionising 48V Automotive Architectures
The automotive industry is rapidly adopting 48V mild-hybrid and auxiliary power systems to meet stringent emissions regulations and power an increasing number of electrical loads. These systems demand highly efficient and robust power components. The DMTH10H1M7SPGWQ is specifically tailored for 48V Brushless DC (BLDC) motor drives, which are fundamental to crucial vehicle functions.
Key applications targeted by this new MOSFET include electric power steering and advanced braking systems, where precise control and high efficiency are paramount for both safety and performance. Beyond motor drives, the device is also well-suited for battery disconnect switches, which provide essential safety and power management functions in electric vehicles, and for onboard chargers (OBCs), which facilitate efficient battery recharging.
The PowerDI8080-5 Package: A Leap in Miniaturisation and Thermal Management
A significant highlight of Diodes Incorporated’s new offering is its innovative PowerDI8080-5 package. The company emphasises that this package itself represents a substantial engineering achievement, directly addressing the automotive sector’s continuous demand for smaller, more powerful, and highly reliable components. Its compact footprint and advanced thermal characteristics set a new benchmark for EV Power Electronics.
Space Efficiency and Profile Optimisation
The PowerDI8080-5 package features a footprint of just 64 mm², which is approximately 40% of the board area typically occupied by a conventional TO-263 (D2PAK) package. This drastic reduction in size is a game-changer for space-constrained applications within modern vehicles, where every millimetre of board space is critical. Furthermore, its low 1.7 mm profile contributes to overall system miniaturisation, allowing for more flexible design layouts and integration into compact modules.
Enhanced Thermal Performance for Reliability
Beyond its compact size, the package excels in thermal management, a crucial factor for the longevity and performance of power semiconductors. Diodes Incorporated has leveraged copper-clip die bonding technology to significantly reduce the junction-to-case thermal resistance to as low as 0.3 °C/W. This superior thermal pathway enables the MOSFET to handle high power densities, allowing for impressive drain currents of up to 847 A without compromising reliability.
Effective heat dissipation is a cornerstone of robust EV Power Electronics. Components that can operate efficiently at higher currents and temperatures contribute directly to the overall reliability and performance of automotive systems, particularly in the demanding environments of electric and hybrid vehicles. The enhanced thermal performance ensures consistent operation even under heavy loads, mitigating the risk of thermal runaway and extending component lifespan.
Gullwing Leads: Boosting Manufacturing and Durability
The PowerDI8080-5 package incorporates gullwing leads, a feature designed to offer distinct advantages in both manufacturing and long-term reliability. These leads facilitate automated optical inspection (AOI) during the manufacturing process, allowing for more precise and reliable solder joint verification. This is essential for ensuring high-quality assembly in high-volume automotive production lines.
Moreover, the gullwing lead structure contributes to improved temperature-cycling reliability. In automotive applications, components are frequently subjected to wide temperature fluctuations, which can induce mechanical stress on solder joints. The flexibility of gullwing leads helps to absorb these stresses, significantly enhancing the component’s durability and operational lifespan in harsh automotive environments. This feature is particularly valuable for the robust requirements of EV Power Electronics.
A Comprehensive Portfolio for Diverse Automotive Needs
Alongside the flagship 100V device, Diodes Incorporated has also broadened its PowerDI8080-5 lineup with additional MOSFETs covering various voltage requirements. This expanded portfolio offers automotive designers greater flexibility and optimal solutions for different power domains within a vehicle. The availability of a wide range of voltage and resistance options in a consistent package simplifies design integration and inventory management for manufacturers.
The new additions include 40V, 60V, and 80V devices, all housed within the same high-performance 8 mm x 8 mm gullwing-leaded package. Among these, a notable 40V part stands out with an exceptionally low 0.4 mΩ maximum RDS(on). Diodes Incorporated states that this particular device offers one of the lowest on-resistances in the industry, making it ideal for applications where even minimal power loss must be avoided.
Specific examples from this broader lineup include the 80V DMTH81M2SPGWQ, designed for higher voltage auxiliary systems, and the 60V DMTH6M70SPGWQ, which targets 24V applications commonly found in heavy-duty vehicles and certain automotive subsystems. Furthermore, the 40V parts are well-suited for 12V motor drives, various DC-DC conversion tasks, and a range of microcontroller-driven automotive loads, providing robust solutions for standard vehicle electrical systems.
Ensuring Automotive-Grade Reliability and Compliance
Crucially, all these devices are AEC-qualified, signifying their compliance with the Automotive Electronics Council’s rigorous reliability standards. This qualification ensures that the MOSFETs meet the stringent requirements for operation in automotive environments, which are characterised by extreme temperatures, vibrations, and electrical transients. AEC qualification is a prerequisite for components used in safety-critical and performance-critical automotive systems, providing assurance of their robustness and dependability.
Further bolstering confidence in their quality, Diodes Incorporated confirms that these devices are manufactured in facilities certified to IATF 16949. This international standard specifies requirements for a quality management system specifically for the automotive industry. Adherence to IATF 16949 ensures consistent product quality, robust manufacturing processes, and a commitment to continuous improvement, all of which are essential for components integrated into modern vehicles.
The Broader Impact on EV Power Electronics
The continuous innovation in components like Diodes Incorporated’s new MOSFETs plays a pivotal role in the advancement of EV Power Electronics. As the automotive industry accelerates its transition towards electrification, the demand for more efficient, compact, and reliable power management solutions grows exponentially. These new devices directly contribute to this evolution by enabling more effective power conversion, reducing energy waste, and allowing for smaller, lighter system designs.
From enhancing the performance of electric power steering systems to optimising the charging efficiency of onboard chargers, these high-performance MOSFETs are foundational to the functionality and efficiency of next-generation electric vehicles. Diodes Incorporated’s commitment to developing such critical components ensures that automotive manufacturers have access to the cutting-edge technology required to build safer, more reliable, and environmentally friendly vehicles.
The availability of a comprehensive range of these advanced MOSFETs in a common, high-performance package allows designers to streamline their component selection and layout processes, ultimately reducing development cycles and time-to-market for new automotive platforms. This strategic product launch reinforces Diodes Incorporated’s position as a key enabler in the rapidly evolving landscape of automotive power solutions and EV Power Electronics.