Infineon Technologies has launched an integrated power management IC (PMIC) targeting high-voltage traction inverters for electric vehicles and hybrid vehicles. The key feature is consolidating power supply, resolver excitation, and safety functions into a single chip to reduce design complexity and component count.

This product replaces the power supply, resolver excitation, and safety engine functions that were previously composed of multiple discrete components with a single chip.

Along with a reduction in bill of materials (BOM), the company explained that PCB area can be reduced by up to 70% compared to existing designs.

The TLE9744QK generates resolver excitation signals directly within the chip and operates without external driver and monitoring circuits.

With broad power supply compatibility across various microcontrollers (MCU) and gate drivers, existing MCU platforms can be utilized without major hardware modifications, according to Infineon.

Support for off-board sensor power supply also enhances design flexibility.

From a functional safety perspective, integrated safety logic (ISL) is implemented with an independent hardware architecture.

The ISL continuously monitors phase current, DC link voltage, and MCU and gate driver status, forcing a transition to a safe state when the main MCU malfunctions.

Redundant supply input is provided separately to allow the ISL to continue operating even in situations of main low-voltage power failure.

According to Infineon, this design supports meeting ISO 26,262 standard requirements including △ASIL-D compliance △securing an independent secondary safety path △maintaining safety functions during power anomalies.

For more details, visit Infineon's official product page (www.infineon.com/part/TLE9744QK).