With the push for carbon neutrality, dual-motor systems are seeing increased adoption across new energy vehicles, industrial automation, medical devices, and renewable energy. These systems offer higher efficiency, better integration, and smarter control. According to Business Research Insights, the global dual-motor market is expected to reach USD 2.7 billion in 2024 and grow from USD 2.89 billion in 2025 to USD 5.0 billion by 2033, at a CAGR of 7.2%.

To meet growing market demand, Geehy introduces the APM32F411 low-voltage sensorless FOC dual-motor solution, featuring two GHD3440 motor gate drivers. The solution delivers high efficiency, low noise, and strong reliability with integrated protections such as overcurrent, overvoltage, and fault detection. It is ideal for a wide range of applications, including smart appliances (air conditioners, refrigerators), camera gimbals, AGV chassis, drone ESCs, mopping robots, servo drives, automotive motors, fuel pumps, and more.

APM32F411 Low-Voltage Sensorless FOC Dual-Motor Solution Overview

At the core is the high-performance, highly adaptable APM32F411 MCU, equipped with two advanced timers that generate three-phase complementary PWM signals with deadband time, enabling sensorless FOC control of two BLDC or PMSM motors on a single chip. Two independent 12-bit ADCs provide precise current sampling for each motor. The back end features GHD3440 motor gate drivers, which amplify drive signals to control MOSFETs, enabling efficient and precise motor control.

Solution Advantages

• High Performance Control: Powered by an Arm® Cortex®-M4F core running at 120 MHz, the APM32F411 can execute dual-loop (speed + current) control for two independent PMSM or BLDC motors on a single core.
• Versatile Peripheral Integration: Includes U(S)ART, I2C, QSPI, SDIO, CAN, and supports both sensorless/sensored FOC and square-wave control. Compatible with Hall, magnetic, and optical encoders.
• Efficient Execution: Current loop executes at 32kHz with only 14µs per cycle, using just 50% of system resources, leaving headroom for speed control, PFC, communication, and display functions.
• Flexible Sampling: Supports single/dual shunt and three-phase BEMF sampling methods.
• Wide Input Voltage: DC input range of 12V–72V, with up to 100W per motor.

APM32F411 MCU Features

• Arm® Cortex®-M4F @120 MHz with FPU and DSP support for complex motor control tasks.
• Up to 128KB SRAM, 512KB Flash, and integrated SMC for powerful algorithm processing and flexible development.
• Rich peripherals: 6x U(S)ART, 3x I2C, 5x SPI, 1x QSPI, 1x USB_OTG, 2x CAN, 1x SDIO.
• On-chip CRC32 unit, ensuring system integrity and reliability.

GHD3440 Motor Gate Driver Features

• 200V dual N-channel three-phase driver, designed for battery-powered BLDC systems.
• Supports 5.5V–18V input and 3.3V/5V logic levels, amplifying control signals for precise, fast, and low-power motor control.
• Built-in undervoltage protection, shoot-through prevention, 250ns deadband time.
• Peak input: 1.0A@12V (60ns fall time, 3.3nF load); Peak output: 0.8A@12V (90ns rise time, 3.3nF load).
• Operating temperature: -40°C to +105°C, suitable for demanding environments.

The APM32F411 low-voltage sensorless FOC dual-motor solution is backed by comprehensive documentation, software, and hardware tools, as well as localized technical support. Designed for advanced consumer and industrial motor control applications, it helps engineers rapidly evaluate and develop motor systems. As intelligent and connected motor systems become the norm, Geehy continues to enhance its MCU lineup, delivering higher performance and cost-efficiency to accelerate the adoption of dual-motor control solutions.