Power Integrations’ 1700 V Switcher IC Delivers Reliability and Space-Saving Benefits in 800 V BEVs

Power Integrations announced five new reference designs targeting 800 V automotive applications based on the company’s 1700 V InnoSwitch™3-AQ flyback switcher ICs. Spanning power levels from 16 W to 120 W, the designs leverage both wound and low-profile planar transformers and target automotive applications such as DC-DC bus conversion, inverter emergency power, battery management and power supplies for auxiliary systems. The designs feature Power Integrations’ new wide-creepage InSOP™-28G package, which supports 1000 VDC on the primary side while providing appropriate creepage and clearance between pins in pollution degree 2 environments.

The new InSOP™-28G package, with its wide 5.1 mm drain-to-source pin creepage distance, addresses the critical need for enhanced safety and reliability in high-voltage applications. It provides sufficient isolation that conformal coating can be eliminated, saving a manufacturing process step and associated qualification effort. The InnoSwitch3-AQ IC, featuring a 1700 V silicon-carbide (SiC) switch, is an ideal solution for 800 V vehicles, simplifying manufacturing while enhancing overall system performance and reliability (more info).