Specially designed for the next generation of electric vehicle infrastructure, providing compact unit solutions for high-efficiency on-board charging and inverters
Littelfuse Corporation (NASDAQ: LFUS) is an industrial technology manufacturing company dedicated to providing power for a sustainable, interconnected, and safer world. The company announced today the launch of the TPSMB asymmetric TVS diode series, which is the first asymmetric transient voltage suppression (TVS) diode to be launched, specifically designed to protect silicon carbide (SiC) MOSFET gate drivers in automotive applications. This innovative product meets the growing demand for reliable overvoltage protection in next-generation electric vehicle (EV) systems, providing a compact single element solution that replaces traditional multiple Zener diodes or TVS components used for gate driver protection.
The PSMB asymmetric TVS diode series provides excellent protection for SiC MOSFET gate drivers. Compared to traditional silicon-based MOSFETs or IGBTs, SiC MOSFET gate drivers have faster switching speeds and are therefore prone to overvoltage faults. The unique asymmetric design of the TPSMB series supports different rated voltages of positive and negative gate drivers for SiC MOSFETs, ensuring higher performance in various demanding automotive power applications that use SiC MOSFETs, including:
Car charger (OBC)
Electric vehicle traction inverter
Input/output interface
VCC bus
These applications require SiC MOSFET gate drivers to have high-performance overvoltage protection (OVP) to ensure optimal performance, lifespan, and efficiency.
Charlie Cai, Director of Product Management for Littelfuse Protection Business, emphasized the value that this product brings to automotive engineers, stating that the TPSMB asymmetric TVS diode series provides an innovative solution for SiC MOSFET gate driver protection, eliminating the need for multiple components and simplifying the design process for engineers. Its compact and reliable design ensures that critical automotive power systems are protected from overvoltage faults, providing support for the continued development of electric vehicles and other high-performance applications
The TPSMB asymmetric series surface mount TVS diodes have the following main characteristics and advantages:
Single element SiC MOSFET gate driver protection: replaces multiple Zener or TVS diodes, simplifies design and reduces component count;
Asymmetric gate driver voltage protection: designed specifically to protect SiC MOSFET gate drivers, which require different negative and positive voltage ratings;
Compact design: This series of products adopts DO-214AA (SMB J-Bend) packaging, which is very suitable for space constrained automotive design;
Vehicle grade quality: Passed AEC-Q101 certification to ensure the highest reliability for automotive applications;
High power loss: 600W peak pulse power loss (10 × 1000 μ s waveform) can provide strong protection against transient overvoltage faults;
Low clamp voltage: VC< 10V@30A (8/20 µ s), providing optimal negative gate drive protection;
Wide frequency stability: With stable capacitance over a wide operating frequency range of up to 2 MHz, it is an ideal choice for SiC MOSFET applications;
Compatible with mainstream SiC MOSFETs: suitable for Littelfuse and other market leading automotive SiC MOSFETs.
Supply situation
The TPSMB asymmetric series TVS diodes are supplied in a coiled form, with a quantity of 3000. All authorized Littelfuse distributors worldwide can accept sample requests. For a list of Littelfuse distributors, please visit Littelfuse.com.
More information
More information can be viewed through the TPSMB Asymmetric Series TVS Diode Product Page. To contact Charlie Cai for technical support, please visit the Littelfuse website or directly through CCai@littelfuse.com Contact Charlie.
About Littelfuse
Littelfuse is a diversified industrial technology manufacturing company dedicated to driving sustainable development, interconnectivity, and creating a safer world. With business coverage in over 20 countries and approximately 17000 global employees, we collaborate with clients to design and deliver innovative and reliable solutions. Serving over 100000 end customers, our products are applied daily in various industrial, transportation, and electronic terminal markets around the world. Littelfuse was founded in 1927 and is headquartered in Chicago, Illinois, USA.
