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Infineon Announces 650V CoolSiC Device For Cars

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Hybrid discrete enables performance boost for fast switching automotive on-board charger applications

Infineon has launched the 650 V CoolSiC hybrid discrete for automotive. The device contains a 50A TRENCHSTOP 5 fast-switching IGBT and a CoolSiC Schottky diode to enable a cost-efficient performance boost as well as high reliability. This combination builds a perfect cost-performance trade-off for hard-switching topologies and supports high system integrity in addition to bi-directional charging. This makes the device ideal for fast switching automotive applications such as On-Board Chargers (OBC), Power Factor Correction (PFC), DC-DC and DC-AC converters.

The integrated fast-switching 50 A IGBT enables MOSFET-like turn-off behaviour outperforming pure silicon solutions. In contrast to regular SiC MOSFETs, the plug-and-play solution for a fast time-to-market achieves 95 to 97 percent system efficiency at a lower cost level. Furthermore, the CoolSiC Schottky diode supports reduced turn-on and recovery losses.

In comparison to pure silicon designs, the device is suitable for hard commutation with 30 percent lower losses. With its low cooling requirements, the diode also provides a good cost-performance trade-off on the system level, according to Infineon.

Shenzhen VMAXPower (VMAX) is a OBC supplier in China, focusing on the development of automotive power electronics and providing customers with OBCs and DC-DC converters. VMAX uses Infineon's latest CoolSiC hybrid discrete in their next-generation OBC/DC-DC system (pictured above).

“The partnership we have with Infineon is an essential cornerstone of our philosophy of consistently creating maximum value for our customers,” said Xu Jinzhu, R&D Director of VMAX. “The CoolSiC Hybrid Discrete allows us to simplify driver design, accelerate product development, lower costs and increase system robustness. The integrated SiC diodes without reverse recovery charge further optimise the EMC characteristics of the system. This results in greater performance benefits and a better price/performance ratio in topologies such as totem-pole PFC and DAB.”

“We are very happy about this close partnership and the great collaboration with VMAX. This project further highlights our strong position in the on-board charger application”, said Jürgen Spänkuch, VP for Automotive High Power Discretes and Chips at Infineon.

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