The APM32 family of SiC power modules meets the requirements of automotive on-board chargers and DC-DC converters
onsemi has announced a trio of SiC-based power modules intended for use in on-board charging systems and high voltage (HV) DC-DC converters. The new family of modules APM32 will enable faster charging and increased range, two critical factors for consumers, on all types of electrical vehicles (xEV).
Specifically designed for high-power 11-22kW on-board chargers (OBC), APM32 is the first product family which combines silicon carbide technology with a transfer molded package, thus increasing the efficiency and reducing the charging time of xEVs.
All the three modules feature low conduction and switching losses, excellent thermal resistance and high voltage isolation able to support 800V EV bus voltage. Additionally, high efficiency and reduced heat production allow for more performing and robust OBC.
The APM32 modules provide high levels of reliability and each module is serialized for full traceability by utilizing onsemi’s end-to-end SiC supply chain capability and tested SiC MOSFETs and diodes. The modules can operate at junction temperatures (Tj) of up to 175°C, providing reliability even in harsh and space-constrained automotive applications.
Suitable for high voltage battery stacks, the NVXK2TR40WXT and NVXK2TR80WDT APM32 power modules are based on a common H-bridge topology with a breakdown voltage of 1200 V. These two modules have been specifically designed to satisfy the requirements of on-board chargers and HV DC-DC conversion stages.
The third module of the trio, the NVXK2KR80WDT, is based on a Vienna Rectifier topology which is suitable for implementing the power factor correction (PFC) stage of the OBC. In the near feature, the APM32 series will be extended by adding six-pack and full-bridge modules which will complete the SiC OBC portfolio.
A robust and compact dual in-line package (DIP) is used to house all three modules, ensuring low module resistance. The most stringent requirements of the automotive industry are met by the high insulation feature, while the IEC 60664-1 and IEC 60950-1 standards are satisfied by the creepage and clearance distances.
The modules also meet the requirements of AQG 324 and AEC-Q101 for usage in automobiles.
