News: Microelectronics
16 March 2026
EPC91202 evaluation board added for three-phase BLDC motor drive inverter
Efficient Power Conversion Corp (EPC) of El Segundo, CA, USA — which makes enhancement-mode gallium nitride on silicon (eGaN) power field-effect transistors (FETs) and integrated circuits for power management applications — has introduced the EPC91202 evaluation board, a complete three-phase brushless DC (BLDC) motor drive inverter designed to accelerate the 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 100V eGaN FET and can output up to 70Apeak (50ARMS) of current. It can also switch PWM frequencies up to 150kHz, 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 14V and 76V, the EPC91202 is optimized for battery-powered systems and supports both sensorless and encoder-based control architectures. Its optimized dv/dt on the switching node (<10V/ns) minimizes 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,” says CEO & co-founder Alex Lidow. “By combining high switching speed, low losses and integrated sensing, designers can dramatically increase power density while simplifying development and reducing system cost.”
The inverter is compatible with multiple controller platforms from leading microcontroller suppliers, allowing developers to leverage existing firmware and development ecosystems. Accurate phase current and voltage sensing enables advanced control techniques such as field-oriented control (FOC) and space-vector PWM for high-performance motion systems.
The EPC91202 is suitable for humanoid robot joints, compact servo drives, robotics, drones, and eMobility platforms. Complete design support files, including schematic, bill of materials (BOM) and Gerber files, are available on the EPC91202 product page.
The EPC91202 reference design board is priced at $500. Reference design boards and devices are available for immediate delivery from distributors Digi-Key and Mouser.
EPC adds 3-phase BLDC motor drive inverter evaluation board for humanoid robot joint applications
EPC launches 3-phase BLDC motor drive inverter for robot joints and UAVs
EPC launches first GaN-based motor drive reference design for humanoid robot joints and UAVs
