Hangshun Motor Control MCU | BeiLuo Distributor

About Motor Control MCU

Hangshun Motor Control MCUs are specialized microcontrollers designed for efficient control of various motor types including BLDC (Brushless DC), PMSM (Permanent Magnet Synchronous Motor), stepper, and brushed DC motors. These MCUs integrate advanced motor control peripherals including high-resolution PWM units with dead-time insertion, integrated gate drivers for external MOSFETs, analog comparators for overcurrent protection, and operational amplifiers for current sensing. The ARM Cortex-M4 core with FPU enables complex control algorithms such as Field Oriented Control (FOC) and Sensorless Vector Control. Hardware acceleration for trigonometric functions and PID controllers reduces CPU load. The MCUs support both sensored (Hall effect, encoder) and sensorless (BEMF, observer) control methods. Integrated protection features include overcurrent, overvoltage, undervoltage, and overtemperature protection. With PWM frequencies up to 100kHz and dead-time resolution down to 1ns, these MCUs provide precise motor control for applications ranging from small fans to high-power industrial drives. Power range extends from 10W to 2kW depending on external power stage selection.

As an authorized distributor of Hangshun, BeiLuo provides a comprehensive range of Motor Control MCU products. These products are widely used in industrial control, automotive electronics, consumer electronics, and communication equipment. We offer a complete product line with multiple series to meet various application requirements. All products are genuine and original, backed by professional technical support and comprehensive after-sales service.

Selection Guide: How to Choose the Right Motor Control MCU

Product List

2 products available

Part Number ↕	Core ↕	Frequency ↕	PWM Channels ↕	PWM Resolution ↕	Gate Drive ↕	Package ↕	Stock Status	Action
HS32M100C8T6	ARM Cortex-M4	72 MHz	6	1ns dead-time	Integrated 200mA	LQFP48	In Stock	View Details
HS32M200RGT6	ARM Cortex-M4F	168 MHz	8	1ns dead-time	Integrated 500mA	LQFP64	In Stock	View Details

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Frequently Asked Questions

How do I select the right motor control MCU for my application?

Selecting the right motor control MCU depends on motor type, power level, and control requirements: 1) Motor type - BLDC (6-step or FOC): Need 6 PWM channels, commutation logic

PMSM (FOC): Need 6 PWM channels, high-performance CPU for Clarke/Park transforms

Stepper: Need 2-4 PWM channels, microstepping support

Brushed DC: Need 1-2 PWM channels, simple control

2) Power level - Low power (<100W): Integrated drivers may be sufficient

Medium power (100W-1kW): External MOSFETs with gate drivers

High power (>1kW): External IGBTs with isolated drivers

3) Control algorithm - 6-step commutation: Basic MCU with simple peripherals

FOC/Sensorless: Cortex-M4 with FPU recommended for real-time calculations

4) Sensing requirements - Current sensing: Integrated op-amps reduce external components

Position sensing: Encoder/Hall interfaces for sensored control

Sensorless: High-speed ADC for BEMF detection

5) Safety features: Overcurrent protection, fault inputs, emergency stop. Use the parametric table to filter by PWM channels, CPU performance, and integrated features.

Match PWM channels to motor type; select M4+FPU for FOC; check integrated op-amps for current sensing.

What is the difference between 6-step and FOC motor control?

Two main control methods for BLDC/PMSM motors have different characteristics: 6-Step (Trapezoidal) Control - Principle: Energize 2 of 3 phases at a time (6 combinations)

Complexity: Simple, low computational requirements

Efficiency: Good (85-90%)

Torque ripple: Higher (10-15%)

Speed range: Limited (typically 1:10)

Sensor requirements: Hall sensors or sensorless BEMF

CPU load: Low (any Cortex-M0/M3)

Best for: Cost-sensitive applications, high-speed motors. FOC (Field Oriented Control) - Principle: Control torque and flux independently like DC motor

Complexity: Complex, requires coordinate transforms (Clarke/Park)

Efficiency: Excellent (90-95%)

Torque ripple: Very low (<5%)

Speed range: Wide (1:100 or more)

Sensor requirements: Encoder preferred, sensorless possible

CPU load: High (Cortex-M4 with FPU recommended)

Best for: High-performance servo, energy-efficient applications. Selection guidance: Use 6-step for fans, pumps, simple drives where cost matters

Use FOC for servo systems, high-efficiency drives, low-speed torque control. Hangshun motor control MCUs support both methods with appropriate libraries.

Use 6-step for cost-sensitive fans/pumps; use FOC for servo and high-efficiency applications.

What motor control libraries does Hangshun provide?

Hangshun provides comprehensive motor control firmware libraries: 1) 6-Step BLDC Library - Sensorless BEMF detection

Hall sensor-based commutation

Speed and current control loops

Starting algorithms (alignment, ramp-up)

Fault protection

2) FOC Library - Complete FOC implementation (Clarke, Park, SVPWM)

Sensorless observer (sliding mode, flux observer)

Encoder-based position control

MTPA (Maximum Torque Per Ampere) optimization

Field weakening for high-speed operation

3) Stepper Library - Full-step, half-step, microstepping (up to 256x)

Acceleration/deceleration profiles

Stall detection

Closed-loop control with encoder

4) PMSM Library - Optimized for servo applications

Position, speed, torque control modes

Auto-tuning for motor parameters. Library features: Modular architecture for easy integration

Configurable parameters via header files

HAL-based for portability

Example projects for common motor types

Real-time debugging support. Resource requirements: 6-step: 8-12KB Flash, 2KB RAM

FOC: 20-30KB Flash, 4KB RAM

Stepper: 6-10KB Flash, 1KB RAM. The libraries are provided as source code with full documentation.

Use 6-step library for simple BLDC; FOC library for high-performance; stepper library for precise positioning.

How do I implement current sensing in motor control applications?

Current sensing is critical for motor control and can be implemented several ways with Hangshun MCUs: 1) Shunt resistor sensing - Place low-value resistor (0.01-0.1Ω) in current path

Measure voltage drop with integrated op-amp

Advantages: Low cost, accurate, bidirectional

Disadvantages: Power loss, requires amplification

2) Integrated op-amp usage - Hangshun motor MCUs include 2-3 op-amps

Configure for differential or single-ended mode

Programmable gain (typically 1-16x)

Direct connection to ADC

3) Sensing configurations - Single shunt: One resistor on DC bus, reconstruct phase currents

Dual shunt: Two resistors on lower phases

Triple shunt: Three resistors for direct measurement

4) Isolated sensing - Hall effect sensors for high-voltage applications

Current transformers for AC measurement

Isolated amplifiers for safety-critical systems. Design considerations: Shunt power rating: P = I² × R

Op-amp bandwidth > switching frequency

ADC sampling synchronized with PWM

Offset calibration for accuracy. Typical implementation: 0.05Ω shunt resistor

Op-amp gain of 10x

12-bit ADC resolution

Provides current resolution of ~50mA. The integrated op-amps reduce external component count significantly.

Use shunt resistors with integrated op-amps for cost-effective sensing; consider Hall sensors for high voltage isolation.

What protection features are important for motor control MCUs?

Motor control applications require robust protection features: 1) Overcurrent protection (OCP) - Fast analog comparator detection (<1μs)

Shutdown PWM immediately on fault

Configurable threshold via DAC or external reference

Essential for power stage protection

2) Overvoltage protection (OVP) - Detects regenerative braking overvoltage

Triggers braking resistor or shutdown

Protects DC bus capacitors

3) Undervoltage protection (UVP) - Prevents operation with insufficient gate drive

Configurable threshold (typically 80% of nominal)

Safe shutdown sequence

4) Overtemperature protection - Internal MCU temperature sensor

External NTC for power stage monitoring

Thermal derating or shutdown

5) Additional protections - Stall detection (motor stuck)

Open-phase detection (wiring fault)

Over-speed protection

Watchdog for software faults. Implementation: Hardware comparators for fast OCP (<1μs)

Software monitoring for other protections (10-100ms)

Safe state configuration on fault

Fault history logging for diagnostics. Hangshun motor control MCUs integrate most protection features, reducing external component count. The fast OCP is critical - software-only protection is too slow for power stage protection.

Implement hardware OCP for power stage protection; add software monitoring for other faults; configure safe states.