Passive Components


Capacitors for next-gen EV charger designs

28 February 2023 Passive Components

The EV charger market has seen a marked upswing in the last few years and shows no sign of slowly down as the world embraces the automotive electrification taking place. Cornell Dubilier Electronics (CDE) has responded to the rapidly growing demand for high-performance DC-link capacitors for these EV chargers.

The latest EV charger designs are pushing the envelope with respect to higher voltage and current handling in an effort to reduce charging times. The design of these level 3 chargers is a balancing act to reduce the unwanted circuit harmonics that cause significant heating.

The capacitors available for these applications include screw terminal and snap-in aluminium electrolytics, and polypropylene film capacitors that are either air- or water-cooled, and with oil-impregnated or dry-epoxy construction. The metal or plastic housings include multiple terminal options.

CDE offers high capacitance values with low inductance of less than 5 nH, high ripple current, self-healing, and low loss dielectrics. Voltage ranges on these capacitors start at 450 V and move up to 3800 V  DC. With a typical life expectancy of 200 000 hours and an operating temperature range of -40 to 135°C, the range is well-suited to all high-performance charging systems.


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