Overview
Description
The BLDC/PMSM GaN-based motor drive power stage system is available in a variety of architectures to fit different end-application use cases and system-level requirements:
- 3.3kW Isolated Motor Drive System: Drives voltages up to 400V and power ratings up to 3.3kW. Ideal for high-power applications such as HVAC systems, heat pumps, and other high-end products that require a fully isolated solution.
- 1kW Non-Isolated Motor Drive System: Drives voltages up to 100V and power ratings up to 1kW. Ideal for space-constrained applications requiring a smaller bill of materials (BOM) and compact form factors, such as UAVs and drones.
The power stage integrates an inverter, isolated gate drivers, sensing, protection, and auxiliary power functions, while motor control algorithms and pulse-width modulation (PWM) generation are executed on an external motor control processor board.
The inverter stage implements SuperGaN® FETs in a three-phase bridge topology, with each switch driven by an isolated gate driver that provides galvanic isolation between the control and power domains. Current measurements, phase-voltage monitoring, temperature feedback, position sensors, Hall sensors, and other diagnostic signals are transferred through isolation amplifiers to the processing board, enabling comprehensive system protection and monitoring.
System Benefits:
- GaN-based inverter stage enables high-efficiency operation and evaluation at higher switching frequencies.
- Fast fault response with overcurrent and short-circuit protection is implemented through a dedicated hardware protection path independent of MCU processing.
- Enables direct reuse of the existing motor control software environment and supports future migration to Renesas motor control platforms.
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3.3kW Isolated Motor Drive System
Motor Control Processor
Products
Boards & Kits
Buck Converter
Small form factor, ultra-low quiescent current buck regulator with VIN UVLO, VOUT OVP, overcurrent, and over-temperature protection. Supports GaN's high power density, improves standby efficiency, and protects isolation and gate-drive circuits.
Products
Isolated AC/DC
Reliable, highly integrated isolated auxiliary power supply with PrimAccurate™ primary-side regulation, eliminating optocouplers to improve reliability. EZ EMI simplifies compliance and reduces filtering requirements in noisy GaN motor-drive environments.
Products
GaN FETs
GaN FETs deliver high-efficiency motor-drive operation with ultra-low switching losses, zero reverse-recovery charge, and superior thermal performance. They enable higher switching frequencies, increased power density, and more compact inverter designs.
Products
Half-Bridge Gate Driver
Enable fast, reliable GaN FET control with matched HS/LS timing, high dV/dt immunity, integrated shoot-through protection, and robust high-voltage switching for higher switching frequencies, improved efficiency, and increased power density.
Products
Photocoupler
Achieve robust digital communication across isolation barriers with high common-mode noise immunity and fast signal transmission for PWM control, protection, and feedback signals in high-voltage motor-drive systems.
Products
Photocoupler
Products
Isolation Amplifier
High-accuracy isolated current and voltage sensing with fast response enables precise motor control, rapid fault detection, and safe feedback transfer across the isolation barrier for high-performance GaN motor drives.
Products
Protection Logic: GreenPAK
Programmable mixed-signal logic IC implementing fast hardware protection, fault management, and gate-drive interlocking for safe, reliable operation of high-speed GaN motor drives. Configurable in Go Configure™ Studio for application-specific logic.
Products
Boards & Kits
Current Sense Amplifier
Products
Inductive Position Sensor
Renesas magnet-free contactless position sensors support on-axis, off-axis, linear, and arc position detection from small angles up to 360°. They enable absolute or incremental sensing for a wide range of motor-control applications.
Products
Exiting Interactive Block Diagram
1kW Non-Isolated Motor Drive System
Motor Control Processor
Products
Boards & Kits
GaN FETs
GaN FETs deliver high-efficiency motor-drive operation with ultra-low switching losses, zero reverse-recovery charge, and superior thermal performance. They enable higher switching frequencies, increased power density, and more compact inverter designs.
Products
Boards & Kits
Documentation
Half-Bridge Gate Driver
Drive high-speed FETs with anti-shoot-through protection, low propagation delay, and precise delay matching to improve inverter efficiency and switching reliability.
Products
Boards & Kits
LDO
Products
Inductive Position Sensor
Renesas magnet-free contactless position sensors support on-axis, off-axis, linear, and arc position detection from small angles up to 360°. They enable absolute or incremental sensing for a wide range of motor-control applications.
Products
Boards & Kits
Current Sense Amplifier
Provides accurate high-side or low-side current measurement for real-time motor monitoring, enabling FOC, torque regulation, and overcurrent protection to improve accuracy and system reliability.
Products
Boards & Kits
Protection Logic: GreenPAK
Programmable mixed-signal logic IC providing fast hardware protection, fault management, and gate-drive interlocking for safe, reliable operation of high-speed GaN motor drives. Configurable in Go Configure™ Studio for application-specific logic.
Products
Boards & Kits
Photocoupler
Enables robust digital communication across isolation barriers with high common-mode noise immunity and fast signal transmission for PWM control, protection, and feedback signals in high-voltage motor-drive systems.
Products
Documentation
Buck Converter
Products
Exiting Interactive Block Diagram
News & Blog Posts
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