en.Wedoany.com Reported - Efficient Power Conversion (EPC) has introduced four new evaluation platforms based on gallium nitride (GaN) technology to accelerate the development of high-performance brushless DC (BLDC) motor drive systems. The EPC91128, EPC91129, EPC91130, and EPC91131 boards target applications such as robotics, industrial automation, battery-powered equipment, and electric mobility assistance systems.
The new platforms are built using EPC's integrated ePower™ Stage ICs, specifically the EPC23108, EPC23109, EPC23110, and EPC23111 devices. These evaluation boards support an input voltage range of 10V to 80V and offer output current capability up to 29A RMS, enabling rapid evaluation of GaN-based motor control architectures across a wide power range.
To simplify system development, the evaluation boards integrate key inverter functions in a compact design, including gate drivers, current and voltage sensing, auxiliary power supply, temperature monitoring, and protection circuits. The high level of integration reduces the need for additional external components, allowing engineers to focus on motor control algorithm development and system optimization.
These evaluation platforms deliver high switching performance while minimizing torque ripple and noise. Additionally, configurable dv/dt control allows developers to optimize switching behavior for specific motor and system requirements.
The platforms are compatible with development environments from Microchip Technology, Texas Instruments, STMicroelectronics, and Renesas Electronics, facilitating easy integration into existing motor control workflows. Depending on the variant, the boards support complementary PWM and single PWM control schemes.
EPC also released performance data from motor drive tests. Under a 48V DC bus and switching frequencies up to 100kHz, the EPC91128 and EPC91129 platforms successfully drove a 3kW BLDC motor, providing 15A RMS continuous phase current without a heatsink and up to 20A RMS with passive heatsink cooling. Under pulsed operating conditions, the system can achieve peak currents up to 29A RMS.
The EPC91130 and EPC91131 variants operate continuously at 10A RMS without a heatsink and at 15A RMS with a heatsink, while supporting peak pulse currents up to 18A RMS. According to EPC, these results demonstrate that the integrated GaN ePower Stage architecture can support demanding motor control applications while maintaining good thermal performance and high-frequency operation.
Complete design resources, including schematics, bill of materials, and Gerber files, are available on the EPC91128/29–EPC91130/31 product pages to support evaluation and development activities.
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