Το εταιρικό blog για Recycle Infineon Motor Drivers:BLDC/BDC/Stepper/Servo/MOSFET Bridge Motor Driver

Recycle Infineon Motor Drivers:BLDC/BDC/Stepper/Servo/MOSFET Bridge Motor Driver

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I. MOSFET Bridge Motor Drivers (General Core Architecture)

MOSFET bridge drivers form the fundamental core of Infineon’s motor drive system; all BDC, BLDC, stepper and servo drive solutions are derived from half-bridge, full-bridge (H-bridge) and three-phase bridge MOSFET drive architectures. Infineon’s MOSFET bridge drivers are divided into two main categories: discrete gate driver ICs and integrated MOSFET single/multi-bridge driver chips, catering to motor control requirements across all scenarios, from high to low voltage and from high to low power.

1.1 Classification of Core Architectures

The half-bridge architecture is primarily used for single-bridge-channel drive of three-phase BLDC motors; multiple half-bridges are combined to form a complete three-phase drive system; The H-bridge (full-bridge architecture) is the mainstream drive architecture for DC motors and stepper motors, enabling forward and reverse rotation, speed regulation and braking control; the three-phase bridge architecture is specifically designed for permanent magnet synchronous and brushless DC motors, and forms the core architecture of high-precision industrial speed control systems. All bridge drive solutions incorporate MOSFET drive circuits developed in-house by Infineon, featuring ultra-fast switching response and low on-state losses.

1.2 Core Products and Technical Advantages

The low-voltage general-purpose series is represented by the 6EDL7141 and 6ED2742S01Q. The 6EDL7141 is suited to low-voltage battery-powered applications and can be paired with the XMC1400 microcontroller to achieve efficient drive of BLDC/PMSM motors; The 6ED2742S01Q is a 160V high-voltage gate driver based on SOI technology, integrating a bootstrap diode and a trickle charge pump. It supports continuous operation at 100% duty cycle, completely eliminating the issue of high-voltage drive voltage dead zones.

Discrete multi-channel bridge drivers support up to 16 external MOSFETs, making them suitable for high-power multi-motor coordinated control systems. The entire range of MOSFET bridge drivers comes standard with a full suite of protection functions, including under-voltage lockout, overcurrent protection, thermal shutdown and short-circuit protection, whilst also supporting fault diagnosis and signal feedback. This significantly enhances system stability and makes them ideally suited to demanding industrial and automotive applications.

II. BDC Brushed DC Motor Drivers

BDC brushed DC motors feature a simple structure, low cost and high start-stop torque, and are widely used in automotive body systems, smart home applications and small industrial equipment. Infineon’s BDC motor drivers are centred on a highly integrated H-bridge drive architecture, comprising two main series: motor control SoCs and integrated driver ICs. These products are characterised by minimal peripheral circuitry, high reliability and automotive-grade compliance.

2.1 Core Product Series

Mainstream products include the three major MOTIX™ motor control SoCs—TLE985x, TLE986x and TLE988x—which are based on Arm Cortex-M0/M3 cores, and integrate an MCU, flash memory, analogue peripherals, an H-bridge driver stage and LIN/CAN-FD communication interfaces onto a single chip. Without the need for additional driver ICs, they enable complete BDC motor speed regulation, forward/reverse operation and braking control, representing the industry’s most highly integrated BDC single-chip solution to date.

For high-power applications, Infineon has introduced multi-MOSFET array driver ICs capable of driving multiple external power MOSFETs, thereby extending the upper limit of motor output power whilst retaining precise current closed-loop control and fault diagnosis functions.

2.2 Key Advantages and Application Scenarios

The products are certified to the automotive-grade AEC-Q100 standard, operate within a temperature range of –40 °C to 150 °C, and offer exceptional immunity to interference; It integrates intelligent freewheeling control, effectively reducing commutation losses and improving motor operating efficiency; the minimalist single-chip design significantly reduces PCB footprint and lowers the overall bill of materials for the system. It is primarily used in applications such as automotive window lifts, wing mirror adjustment, windscreen wiper motors, household appliance fans and small industrial drive equipment.

III. BLDC Brushless DC Motor Drivers

Brushless DC (BLDC) motors eliminate the need for carbon brushes, offering advantages such as low noise, long service life, high efficiency and maintenance-free operation, making them the mainstream choice for mid- to high-end motion control applications. Infineon’s BLDC drivers are categorised into high-voltage industrial-grade and low-voltage consumer/automotive-grade variants, supporting various algorithms such as square-wave control and field-oriented control (FOC), and are suited to speed control requirements demanding high precision and dynamic response.

3.1 Core Products and Architecture

A representative product in the low-voltage automotive-grade range is the TLE9879QXA40 single-chip three-phase BLDC driver. It integrates a Cortex-M3 core, a three-phase bridge driver stage, a LIN transceiver and memory units, and natively supports the advanced FOC control algorithm. This single chip enables motor position detection, current sampling and closed-loop speed control, and is specifically designed for mechatronic BLDC motors in automotive applications, offering significant value for money.

The industrial high-voltage series is based on the 6ED series of three-phase gate drivers, enabling the construction of high-power BLDC/PMSM drive systems with voltages up to 200 V, suitable for high-power applications such as industrial fans, water pumps and automation equipment. When paired with Infineon’s XMC series of microcontrollers, high-precision, highly stable three-phase brushless motor drive systems can be rapidly developed.

3.2 Key Advantages and Application Scenarios

Supports both sensorless and sensor-based control modes, compatible with Hall sensors, encoders and sensorless detection solutions; precise current closed-loop control effectively suppresses motor vibration and enhances smoothness during low-speed operation; The entire product range features overcurrent, overvoltage, overtemperature and stalled-rotor protection functions, preventing damage to both the motor and the driver board. Widely used in applications such as automotive cooling fans, in-vehicle water pumps, industrial variable-frequency equipment, smart home ventilation systems and drone propulsion systems.

IV. Stepper Motor Drivers

Stepper motors are characterised by precise positioning, open-loop control and the absence of cumulative error, and are frequently used in point-to-point control and low-speed precision transmission applications. Infineon’s stepper motor drivers are based on a multi-channel half-bridge/H-bridge array architecture, specifically designed for two-phase and four-phase stepper motors, and are characterised by high positioning accuracy, low vibration and high immunity to interference.

4.1 Core Products and Features

Key representative products include the TLE8444SL quarter-bridge driver IC and the TLE4206-2G H-bridge driver chip. The TLE8444SL is a dedicated stepper motor driver chip that integrates four independent half-bridge drive channels, capable of directly driving two-phase four-wire and four-phase stepper motors. It features built-in current limiting, over-temperature protection and short-circuit protection, and supports microstepping control to effectively reduce motor operating noise and vibration.

The TLE4206-2G, as a general-purpose H-bridge driver IC, is compatible with small stepper motors and micro-servo mechanisms. With its streamlined design and high stability, it is well-suited to lightweight position control applications.

4.2 Application Scenarios

The product holds dual automotive and industrial certifications and is suitable for low-speed motion applications requiring high positioning accuracy, such as in-vehicle lighting adjustment, in-vehicle camera gimbals, industrial automation positioning equipment, 3D printers, security camera gimbals and precision instrument drives.

V. Servo Motor Drivers

Servo motors are characterised by high precision, high dynamic response and closed-loop servo control, serving as core power components for high-end automation and precision equipment. Infineon’s servo drivers focus on small-to-medium power servo systems; leveraging a highly integrated drive architecture and precise algorithmic support, they achieve accurate closed-loop control of speed, position and torque.

5.1 Core Technologies and Product Solutions

Infineon’s servo drive solutions are based on a core architecture comprising high-performance gate driver ICs and industrial-grade MCUs; certain integrated chips enable single-chip servo drive control. Dedicated driver chips such as the TLE4206-2G are suited to micro-servo systems, supporting rapid forward/reverse switching and precise torque control; high-voltage three-phase drive solutions are suitable for industrial low-to-medium-power servo motors, supporting high-speed dynamic speed regulation and high-precision position tracking.

The solutions natively support encoder signal acquisition and high-speed closed-loop processing, offering fast response times and high speed regulation accuracy, making them ideally suited to the high-speed start-stop and precise positioning requirements of automated equipment.

5.2 Application Scenarios

These solutions are primarily used in industrial automation production lines, precision CNC equipment, robotic joints, intelligent warehouse transmission systems, high-end medical devices and other scenarios requiring high-precision, high-dynamic motion control, whilst balancing stability and control accuracy.

VI. Core Advantages of the Full Product Range

1. Comprehensive architecture coverage: Based on a standardised MOSFET bridge driver core, the range fully covers the four mainstream motor types—BDC, BLDC, stepper and servo—to meet motion control requirements across all scenarios;

2. Comprehensive high and low voltage coverage: 12V low voltage is suitable for consumer and automotive applications, whilst high voltage up to 200V is suitable for high-power industrial equipment, offering a wide power range;

3. High Integration and Reliability: The single-chip SoC solution significantly simplifies peripheral circuitry; utilising automotive-grade and industrial-grade manufacturing processes, it features a comprehensive suite of protection and fault diagnosis functions, making it suitable for demanding operating conditions;

4. Strong Algorithm Adaptability: Native support for mainstream high-end algorithms such as FOC (Field-Oriented Control), microstepping and three-loop servo control, catering to both basic speed regulation and high-precision control requirements.