EPC GaN FET-based Motor Drive Reference Design Enhances eMobility, High-power Drone Performance

Article By : Efficient Power Conversion

The EPC9186 is suitable for applications such as electric scooters, small electric vehicles (EVs), forklifts, and high-power drones.

Efficient Power Conversion (EPC) has launched the EPC9186, a 3-phase BLDC motor drive inverter using the EPC2302 eGaN FET. Supporting a wide input DC voltage ranging from 14V to 80V, the EPC9186 is suitable for applications such as electric scooters, small electric vehicles (EVs), agricultural machinery, forklifts, and high-power drones.

The EPC9186 uses four EPC2302 FETs in parallel per switch position and can deliver up to 200Apk maximum output current. The EPC9186 contains all the necessary critical function circuits to support a complete motor drive inverter including gate drivers, regulated auxiliary power rails for housekeeping supplies, voltage, and temperature sense, accurate current sense, and protection functions.  The boards can also be configured for multiphase DC–DC conversion and support both phase and leg shunt current sensing.

Major benefits of a GaN-based motor drive are exhibited with this reference design, including lower distortion for lower acoustic noise, lower current ripple for reduced magnetic loss, lower torque ripple for improved precision, and lower filtering for lower cost.

EPC provides full demonstration kits, which include interface boards that connect the inverter board to the controller board development tool for fast prototyping that reduce design cycle times.

“GaN-based inverters increase motor efficiency and can increase power capability without increasing size,” said Alex Lidow, CEO of EPC. “This enables motor systems that are smaller, lighter, less noisy, have more torque, more range, and greater precision for a wide range of consumer and industrial applications.”

Designers interested in replacing their silicon MOSFETs with a GaN solution can use the EPC GaN Power Bench’s cross-reference tool to find a suggested replacement based on their unique operating conditions.

The cross-reference tool can be found at: https://epc-co.com/epc/DesignSupport/GaNPowerBench/CrossReferenceSearch.aspx.


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