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Behind the Design: 11 kW Matrix OBC Innovation
Go behind the design of an 11 kW matrix on-board charger that supports global charging standards while reducing passive components, size, and cost.
White Paper Overview
Conventional on-board chargers typically rely on multiple conversion stages and numerous passive components. This white paper presents an alternative 11 kW matrix converter design that combines AC/DC conversion, power-flow control, and galvanic isolation within a single stage.
Through an interview with the design engineer, the paper examines the Matrix-DAB topology, smart-capacitor filtering, advanced FPGA- and processor-based control, and compatibility with both three-phase European charging and single-phase North American standards. It also covers design improvements that increased power density to 2.4 kW/L and peak efficiency to 97.2%, including optimized component placement and top-cooled EliteSiC MOSFETs.
Go inside the design to understand how the matrix topology increases power density and supports multiple regional charging standards.
