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High Performance 1 kW per Phase 48 V/12 V Converter Using GaN ePower Stage
Automotive 48 V/12 V converters are essential in modern hybrid electric vehicles, as the energy is exchanged between the 48 V and 12 V buses. This two-voltage system accommodates legacy 12 V systems and provides higher power for 48V to loads such as vacuum and water pumps, electric super chargers, steering, and audio systems. Among all the requirements for the 48 V/12 V converter, efficiency, power density, size and cost are on the top of the list. This article addresses these design criteria by employing the GaN ePower Stage, EPC23101, and compares it with a previous design using discrete EPC2206 devices.
Bodo’s Power Systems