DC/DC converter/charger used in electric supercar

The DC/DC converter/charger was selected by the Racing Green Endurance team of Imperial College London for use on-board its SRZero, a proof-of-concept all-electric supercar with an estimated range of 400km on one charge.

The role of HVI 300-600/14 in the SRZero is effectively the same as an alternator in an internal combustion car, enabling the SRZero's 600V lithium iron phosphate battery pack to float charge a 12V battery, which in turn powers the car's low-voltage control system.

It is essential that the unit delivers 300W continuously and reliably as the control system operates all safety features as well as lights, display and other components.

The HVI 300-600/14 is equipped with non-destructive reverse polarity protection on the input, surge protection and high-grade input/output filtering; 3kVDC input-to-output isolation ensures that the control system is protected from high voltages from the 56kW battery pack.

The unit is filtered to meet EN55022 Class A EMI conducted and radiated - an important consideration in electric vehicles where EMI can cause electrical systems to behave unreliably.

Cooling is combined: by conduction to a base plate, and by convection.

The compact unit measures 132 x 64 x 300mm and ruggedising and conformal coating provide added immunity to shock, vibration and humidity - essential for rugged, open-road conditions.