MOTIX™ | BLDC Motor Driver ICs

Overview

Infineon’s comprehensive product portfolio for BLDC motor control applications

When it comes to increased efficiency and durability, BLDC Motor Driver ICs offer the ideal solution for power electric motor applications. Compared to traditional brushed motor drivers, brushless DC motor drivers (BLDC) are quieter, lighter, and offer an overall smaller design footprint while providing increased reliability. -Brushless DC motor drivers come in one-, two-, and three-phase configurations. However, three-phase BLDC motor drivers are the most common.

While BLDC Motor Driver ICs offer fast speeds, increased durability, and a smaller design footprint, 3-phase brushless DC motor controller/drivers are more expensive and difficult to program compared to traditional motor drivers. This is because 3-phase brushless DC motor driver circuits are designed to ensure precision and accuracy when it comes to speed and torque control. For this reason, Infineon’s 3-phase DC motor controller circuits are designed with extended protection and supervision features.

The three-phase motor driver portfolio from Infineon offers a range of BLDC motor controllers with advanced features such as built-in protection, monitoring, and diagnostics with a high level of integration. This is complemented by Infineon microcontrollers, sensors, transceivers, voltage regulators, and MOSFETS for whole system solutions.

Our portfolio of automotive qualified discrete brushless 3-phase DC motor ICs covers high current motor drive applications up to 48V. These products are ideal for a variety of automotive applications such as electric power steering, brake booster, MHEV starter generator, active roll control, HVAC compressors, pumps and fans, as well as any application where efficiency, space savings, and monitoring functions are priorities.

With a comprehensive range of BLDC motor controller IC products, Infineon’s three-phase motor driver ICs are suitable for a range of applications where steady operation is required at variable speeds. Consequently, reliability, durability, and accurate motion control have become critical for the functioning of body applications. As reliability and durability increase, the need for maintenance is reduced for BLDC motors. BLDC motor controllers enable high RPM with high dynamic and agility.

With a comprehensive range of BLDC motor controller IC products, Infineon offers a complete MOTIX™ BLDC motor system IC that is one of the first systems in the world to combine integrated power supply, CAN FD, and LIN functionality for both DC and BLDC motor controllers. For industrial usage Infineon adds to the 3-phase brushless DC motor controller IC portfolio. The MOTIX™ three-phase motor driver circuit, 6EDL7141, is fully configurable and designed to offer high-performance and excellent system efficiency for battery operated BLDC or PMSM motors.

Infineon’s automotive qualified MOTIX™ Motor System ICs, with integrated 3-phase BLDC motor driver IC, power supply, and communication interface provides a unique level of integration reducing the required board space and amount of component counts. Infineon’s brushless motor controller chip system also feature Infineon’s patented Adapted MOSFET control to improve MOSFET switching, reduce power dissipation, and remove external components such as capacitors, diodes or resistors. They are ideal for automotive applications such as as transfer case, pumps, and fans.

Products
Highlights

Typical BLDC motor applications for automotive include powertrain, chassis, safety and ADAS systems such as electric power steering, brake booster, MHEV starter generator, active roll control, HVAC compressor, transfer case, pumps and fans

Infineon offers different system solutions to meet customer-specific preferences. Infineon´s extensive offering of intelligent motor control ICs is complemented by microcontrollers, sensors, transceivers, voltage Regulators and MOSFETs to simplify the design of end-to-end system solutions and different integration levels are offered based on different customer needs. The TLE9180D 3-phase driver ICs provide the advanced feature set for high current motor drives upto 48V. The latest innovative product family of the Motor System ICs combines the 3-phase driver with supply and communication interface as CAN FD or LIN.

  • High performance with smooth operation from 0…100% duty cycle, precise dead-time control and a high power gate driver stage with typ. 2 A output current
  • Reduced BoM due to functional independent phase voltage feedback, safety barrier to protect the MCU, functional independent OpAmps and smart supply concept that is capable to drive external phase separation MOSFETs
  • Safety features such as somprehensive and configurable protection modes, detailed diagnosis supporting safety relevant use cases and limp home mode increasing the system availability
  • Digital configuration over the SPI interface and diagnostic functions for fast design changes
  • Versatility with a wide input voltage range to operate at 12 V, 24 V and 48 V battery voltage domains that fosters platform concepts and enables simplified variant handling
  • First IC with integrated half-bridge driver, power supply and communication interface in the market significantly reducing the required board space and amount of component counts
  • MOSFET-independent switching time gives the targeted EMC/switching losses trade-off without binning or calibration
  • Self-adaption of external MOSFET switching allows balancing of power dissipation vs. EMC performance and reducing the power dissipation in the FW MOSFET
  • Reduced amount of external components (e.g. resistor, diode, capacitor) due to Adaptive MOSFET Control
  • Extends battery life with very low quiescent current modes
  • Meets major car OEM requirements with excellent EMC and ESD performance
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