BLDC Motor Drivers


Richtek offers a wide range of motor driver solutions covering the requirements of brushless DC motors for home appliance, PMSM/BLDC motors, water pumps, cooling fans, etc. Our solutions can be also applied to speed-control applications such as PC fans, NB fans, and server fans.

Richtek’s motor driver solutions are featured all the functions required to drive motors efficiently and accurately. Our portfolio includes motor controllers, gate drivers, Integrated control modules, and discrete power MOSFETs. With the complete product portfolio and advanced control algorithm, Richtek aims to provide our customers flexible, cost-effective, easy-implement, and highly reliable motor driver solutions. We also provide firmware and hardware technical support from product development through to launch.

Product Line

The following is a list of products released in the last

Part NumberDescriptionShareDatasheetFree Sample
RT7055System Integrated Power Module (sIPM™) for PMSM/BLDC Motor Drive Not available
RT7081AThree-Phase PMSM/BLDC Motor Drive with Gate Driver, Bootstrap Diodes and LDOs Not available
RT7083Three-Phase PMSM/BLDC Motor Controller with Pre-Driver Not available
RT7079Three-Phase PMSM/BLDC Motor Controller with Pre-Driver Not available
RT7080Integrated Power Module for PMSM/BLDC Motor Driver Not available

Brushless DC Motor Driver

Richtek has developed a comprehensive product portfolio of brushless DC motor driver solutions from discrete components to highly integrated modules with a built-in microprocessor. The system power solutions include critical conduction mode (CRM) PFC controller, standby power IC, motor controllers, two-in-one integrated control module, all-in-one integrated power module and discrete power MOSFETs.

Together with Richtek unique algorithm dedicated for motor driver control, the brushless DC motor driver solutions provide excellent performance, which makes it an ideal choice for the high-performance speed-control systems in a wide range of fan and water pump applications.

Key features

  • Sensorless sinewave Field Oriented Control (FOC)
  • 3 phase 80V-600V high-voltage gate driver
  • 600V low Qrr type power MOSFETs
  • The industry-leading 600V all-in-one integrated power module with built-in ARM 32-bit Cortex-M0 core

Technology & Advantages

  • Sensorless FOC algorithm for precise motor control
  • Intelligent system protecting algorithm for robust motor operation
  • Product development support for easy parameter adjusting to reduce development cycle
  • Embedded motor control libraries for effective motor tuning process
  • IC firmware reprogramming for modifying finished designs to lower the risk of wasted stock
  • Complying with UL IEC60730-1 Class B safety certification to ensure product safety operation

System Block Diagram