Блог компании Supply ST Motor Drivers:Brushed DC/BLDC/GaN/Stepper Motor Drivers

Supply ST Motor Drivers:Brushed DC/BLDC/GaN/Stepper Motor Drivers

Shenzhen Mingjiada Electronics Co., Ltd. is a renowned distributor of electronic components. Adhering to the principle of ‘serving and benefiting our customers’, we provide a comprehensive range of high-quality electronic components.

[Supply Advantages]

1. Comprehensive product range covering all application scenarios

Extensive core product range: We specialise in integrated circuits for 5G, new energy, the Internet of Things (IoT), automotive-grade, telecommunications and artificial intelligence, whilst also covering memory, sensors, microcontrollers, Field-Programmable Gate Arrays (FPGAs), transceivers, Wi-Fi/Bluetooth wireless modules and connectors.

Precise Grading and Matching: We offer general-purpose, low-power, automotive-grade (AEC-Q100, ASIL-B/D functional safety) and industrial-grade (wide temperature range from –40°C to 125°C) products, serving diverse application scenarios such as household appliances, in-vehicle electronics, industrial control, medical equipment and smart wearable devices.

2. Strict Quality Control and Traceability

All products are sourced through official channels and come with original manufacturer certification and comprehensive quality traceability reports, ensuring the complete elimination of counterfeit and substandard products. Automotive-grade and industrial-grade products have all passed relevant industry standard tests (such as AEC-Q100).

Professional Quality Inspection Process: 100% incoming inspection + pre-shipment re-inspection to ensure batch consistency and reliability.

3. Ample Stock and Flexible Delivery

We maintain extensive stock levels, capable of fulfilling both single-unit sample orders and high-volume production requirements. We offer Supplier Managed Inventory (SMI) services and long-term supply agreements.

Standard orders are dispatched within 24 hours; urgent orders are responded to within 4 hours; next-day delivery is available in key regions. Our dual-warehouse network in Hong Kong and Shenzhen enables rapid global fulfilment.

4. Flexible Pricing and Services to Meet Diverse Needs

Volume purchasing offers cost advantages, whilst tiered pricing and long-term price protection mechanisms help customers manage their expenditure.

Value-added services include one-stop Bill of Materials (BOM) matching, alternative component recommendations, technical consultancy and obsolete stock management, effectively reducing procurement and design risks.

Through a hybrid distribution model combining authorised and unauthorised channels, we are able to rapidly source niche, discontinued or scarce components.

I. ST Brushed DC Motor Drivers

Brushed DC motors feature a simple structure, low cost and fast start-stop response, making them a common motor type for low-voltage consumer and small-scale industrial equipment. ST’s STSPIN series of brushed DC drivers, designed specifically for this type of motor, offers excellent value for money, minimal peripheral circuitry and wide voltage and current compatibility, significantly reducing the complexity of developing brushed motor control systems.

1. Key Technical Advantages

- High integration: A single chip integrates a full-bridge power stage, current control core and protection circuitry, eliminating the need for numerous discrete components. This effectively reduces PCB footprint and simplifies hardware design; certain models support independent drive of two motors, allowing a single chip to control two brushed DC motors, making them suitable for small multi-axis equipment.

- Wide compatibility range: Covers a broad voltage range from 3 V (low voltage) to 75 V (high voltage), with a comprehensive range of current settings to meet drive requirements from a few milliamps for micro-devices to tens of amps for industrial equipment, making it suitable for brushed DC motors of various power ratings.

- Stable and reliable operation: Built-in comprehensive protection mechanisms against overcurrent, overheating, overvoltage, undervoltage and short circuits effectively prevent chip burnout caused by motor stalling or abnormal loads, making them suitable for complex operating conditions.

- Simple and user-friendly control: Supports PWM speed control, forward/reverse switching and braking to stop, requiring no complex algorithms; standard MCUs can be quickly adapted for development, lowering the barrier to software R&D.

2. Representative Products and Application Scenarios

Mainstream models include the STSPIN220, STSPIN230, STSPIN820 and the high-voltage variant STSPIN9P2. The STSPIN9P2 supports a wide input voltage range of 7–75 V and delivers a maximum drive power of 300 W, making it suitable for high-voltage industrial brushed motors. This series of drivers is widely used in cost-sensitive applications with simple control logic, such as motors for smart home devices, electric toys, small water pumps, fans, access control systems, small automotive actuators and light-duty industrial transmission equipment.

II. ST Brushless DC Motor Drivers (BLDC)

Brushless DC (BLDC) motors eliminate the need for carbon brushes and offer the advantages of low noise, long service life, high efficiency and low electromagnetic interference; they are the mainstream choice for mid- to high-end smart devices and industrial equipment. ST’s BLDC motor drivers are specifically designed for three-phase brushless motors and are categorised into two main types: standalone driver chips and integrated driver-plus-MCU chips. They support two mainstream control methods—six-step commutation and Field-Oriented Control (FOC)—catering to both entry-level, simple applications and high-precision, high-end scenarios.

1. Core Technical Advantages

- Dual control algorithm support: Basic models support simple six-step commutation control, suitable for low-cost speed regulation applications; the high-end STSPIN32G0 series integrates a Cortex-M0+ core MCU and natively supports FOC (Field-Oriented Control), enabling smooth operation at low speeds and high-precision torque control, whilst significantly reducing motor vibration and energy consumption.

- Minimal peripheral design: Integrated gate drivers, power switches and bootstrap circuits; some models feature built-in zero-voltage drop bootstrap diodes, substantially reducing the number of external components and cutting PCB area by over 70 per cent compared to discrete solutions.

- Intelligent diagnostics and protection: Equipped with comprehensive fault diagnosis capabilities, it can accurately detect issues such as overcurrent, overheating, motor phase loss, stalling and busbar abnormalities. It supports fault reporting and self-locking protection, enhancing the safety of equipment operation and maintenance.

- Excellent energy efficiency: Optimised switching timing with precisely matched high-side and low-side switching propagation delays reduces switching losses. Combined with power transistors featuring low on-resistance, this effectively improves the motor’s overall operating efficiency.

2. Representative Products and Application Scenarios

Core products include the STSPIN32G0 integrated BLDC drive controller, as well as dedicated drive chips such as the STSPIN6760 and STSPIN830. Among these, the STSPIN32G0 is a benchmark product for high integration, combining control, drive and power output in a single unit, enabling it to drive three-phase BLDC motors independently without the need for an external MCU. This series is widely used in applications such as industrial fans, water pumps, air compressors, robotic joints, drone propulsion systems, variable-frequency motors in household appliances, and high-precision industrial speed control equipment.

III. ST Gallium Nitride (GaN) Motor Drivers

As demands for high-voltage, high-frequency and high-efficiency motor control continue to evolve, traditional silicon-based MOSFET drivers struggle to meet the energy efficiency and size requirements of high-end industrial and new energy equipment. ST’s GaN motor drivers are built on third-generation GaN semiconductor technology and are characterised by high-voltage tolerance, high-frequency and high-speed operation, ultra-low losses and extreme miniaturisation, making them the core solution for high-power, high-efficiency motor control systems.

1. Key Technical Advantages

- Ultra-high voltage rating and power density: The representative model, PWD5T60, operates at voltages up to 500 V, making it suitable for high-voltage industrial power supply applications. It integrates six power switches and gate drivers onto a single chip, achieving a power density far exceeding that of traditional silicon-based solutions; at equivalent power levels, its footprint is just 30 per cent of that of a discrete component solution.

- Ultra-low on-resistance and switching losses: The extremely low on-resistance and junction capacitance of GaN devices significantly reduce on-resistance losses and high-frequency switching losses, supporting high-frequency operation in the 100 kHz range. This results in faster motor speed control response and higher energy efficiency, making them suitable for energy-efficient, high-end equipment.

- High-speed, precise drive: Precise matching of high-side and low-side switching timing eliminates switching crosstalk and conduction delay, effectively suppressing electromagnetic interference and enhancing the operational stability of high-voltage motors, making it suitable for high-precision, high-frequency speed control applications.

- Highly integrated, redundancy-free design: With built-in bootstrap diodes, protection circuits and timing control modules, there is no need for additional high-voltage auxiliary circuits, simplifying the design of high-voltage, high-power motor systems and reducing the overall failure rate of the equipment.

2. Representative Products and Application Scenarios

The flagship product is the PWD5T60 high-voltage GaN drive power module, specifically designed for high-voltage three-phase motor drives. It is compatible with high-power BLDC motors and high-voltage stepper motor drives. It is primarily used in industrial high-voltage automation equipment, new energy vehicle motors, high-power variable-frequency drive equipment, high-end energy storage motors, and industrial servo auxiliary drive systems—all of which demand extremely high levels of energy efficiency, power and stability.

IV. ST Stepper Motor Drivers (Stepper)

Stepper motors are widely used in positioning and indexing applications due to their precise positioning accuracy, absence of cumulative error, and controllable start-stop behaviour. ST stepper motor drivers form part of the STSPIN high-end motion control series, focusing on high-precision microstep control, smooth motion and intelligent trajectory planning to address the pain points of traditional stepper motors, such as jitter, high noise levels and low positioning accuracy.

1. Core Technical Advantages

- Ultra-high microstep resolution: Supports microstep control up to 256 microsteps, which completely eliminates motor jitter and resonance at low speeds, enabling ultra-smooth motion trajectories and positioning accuracy far exceeding that of standard stepper motor driver solutions.

- Integrated motion trajectory generator: Features a built-in independent motion control core capable of autonomously managing acceleration, deceleration, constant-speed and positioning motion control, significantly reducing the computational load on the host MCU and making it suitable for multi-axis synchronised control systems.

- Strong Adaptability to a Wide Range of Operating Conditions: Operating voltage as low as 1.8 V; high-voltage models support a wide input voltage range of up to 75 V, covering everything from miniature precision stepper motors to industrial high-power stepper motors, and meeting power requirements across multiple scenarios.

- Comprehensive protection and intelligent diagnostics: Integrated overcurrent, overheat, stall and undervoltage protection, with support for real-time fault feedback. It also features adaptive current regulation, dynamically adjusting the output current according to the load to reduce energy consumption and heat generation.

2. Representative Products and Application Scenarios

Core models include the STSPIN222, STSPIN820 and the high-voltage, industrial-grade STSPIN9P1. The STSPIN9P1 supports a 7–75V input voltage range and delivers a maximum drive power of 300W, making it suitable for high-power industrial stepper motors. This series of drivers is widely used in precision positioning applications such as 3D printers, engraving machines, automated sorting equipment, security pan-tilt units, precision instruments, robotic locomotion axes and industrial CNC equipment.