How to Design a Compact Low-voltage BLDC Motor Drive Inverter Using a Monolithic GaN ePower Application Note
Brushless DC (BLDC) motors are popular and finding increasing application in robotics, e-mobility, and drones. Such applications have special requirements such as lightweight, small size, low torque ripple, and precision control. To address these needs, inverters powering the motors need to operate at higher frequency, but require advanced techniques to reduce the resultant higher power loss. GaN FETs and IC’s offer the ability to operate at much higher frequencies in hard-switching topologies without incurring significant losses. This application note presents the design of a high-frequency and compact BLDC motor drive inverter using the monolithic GaN half-bridge ePower™ Stage IC. It is capable of up to 3 MHz switching and 10 ARMS load current per phase.
Conclusion：A 60 V, 3-phase BLDC motor drive inverter designed with EPC2152 GaN ePower stage was demonstrated. The monolithic integration of the FETs and the gate driver ensures not only small size, but also low switching losses even at high switching frequency for the drive. The result is a compact drive solution that can easily be integrated with the motor.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2020/04/03 |
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2.1 MB |
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