With the increase in government mandates to combat climate change, automakers are moving quickly to leverage new technology to respond by switching from the internal combustion engine to electric-drive vehicles. This article presents the design of a 2 kW, two-phase 48 V/12 V bi-directional converter using GaN FETs that achieves 96% efficiency and is targeted for the 48 V mild hybrid system.

PSD North America
March, 2023
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An exploration of a GaN-based design of a 2 kW 48V/12V bi-directional power module for 48 V mild hybrid electric vehicles.

Electronics Today
January, 2023
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With increasing legislation aimed at higher fuel efficiency standards, vehicle manufacturers are searching for cost-effective solutions to meet these demands while still providing the power required for ever-increasing electronically driven functions.  This article details a bi-directional high power converter for mild-hybrid cars and battery backup units using GaN FETs to achieve efficiency exceeding 96% when converting from 48 V to 14.3 V at 500 kHz switching frequency.

Power Electronics Europe
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This article presents the design and performance of an automotive buck/reverse-boost converter with GaN for efficient 48 V power distribution.

Electronics Today
December/January Edition
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The EPC9137 is a two-phase 48 V – 12 V bidirectional converter that delivers 1.5 kW with 97% efficiency in small solution size for mild-hybrid cars and battery power backup units.

EL SEGUNDO, Calif.— May, 2021 — EPC announces the availability of the EPC9137, a 1.5 kW, two-phase 48 V – 12 V bidirectional converter that operates with 97 % efficiency in a very small footprint. The design of this demonstration board is scalable; that is, two converters can be paralleled to achieve 3 kW or three converters can be paralleled to achieve 4.5 kW. The board features four EPC2206 100 V eGaN^® FETs and is controlled by a module that includes the Microchip dsPIC33CK256MP503 16-bit digital controller.