EPC introduces 3-phase inverter eval board
Efficient Power Conversion (EPC) has announced the EPC91202 evaluation board, a complete three-phase BLDC motor drive inverter designed to accelerate development of high-efficiency motor drive applications in robotics, e-mobility, drones, industrial automation, and battery-powered systems.
The EPC91202 is based on the EPC2361 100 V eGaN FET and can output up to 70 A peak (50 ARMS) of current. It can also switch PWM frequencies up to 150 kHz, resulting in less motor noise, higher delivered torque-per-ampere than silicon-based motor drive solutions and reduced DC link size and cost.
Besides the GaN-based power stage, the EPC91202 board has all the necessary circuitry that are needed for a complete inverter. These include gate drivers, housekeeping power supplies, voltage and temperature monitoring, precision current sensing, and protection circuitry, making it quick and straightforward for engineers to quickly test and use high-density GaN motor drive designs.
Operating from input voltages between 14 V and 76 V, the EPC91202 is optimised for battery-powered systems and supports both sensorless and encoder-based control architectures. Its optimised dv/dt on the switching node (<10 V/ns) minimises EMI and motor acoustic emissions while reducing torque ripple, a key advantage for precision motion applications.
“The EPC91202 demonstrates how GaN technology transforms motor drive performance,” said Alex Lidow, CEO and co-founder of EPC. “By combining high switching speed, low losses, and integrated sensing, designers can dramatically increase power density while simplifying development and reducing system cost.”
