Environmental pressures are creating pressure to quickly adopt newer, cleaner, and more efficient transportation options. In 2025, 1 in 10 vehicles sold are expected to be a more fuel efficient 48 V mild hybrid. These systems will require a 48V – 12V bidirectional converter, with power ranging from 1.5 kW to 6 kW. The design priorities for these systems are size, cost, and high reliability. GaN power conversion solutions are perfect to support a 48 V to 12 V bidirectional converter used in these newer models.
A new reference design demo board, the EPC9165, is available to help jump start the design of a 2 kW bi-directional converter. The EPC9165 is a synchronous buck/boost converter with other supporting circuitry including current sensors and temperature sensor. The EPC9528 controller board ships with the EPC9165 to incorporate digital control and housekeeping power supply; this board uses the dsPIC33CK256MP503 digital controller from Microchip.