In today’s rapidly evolving automotive and industrial markets, the demand for compact, efficient and reliable motor control solutions are vital components in the design. Motor drivers combining essential control and power management functions into a single, streamlined device accelerate design development. Integrated motor drivers not only simplify system designs and reduce component count, but also enhance reliability and performance—key factors in applications such as automotive body electronics, robotics and factory automation. As vehicles and industrial systems become increasingly sophisticated, integrated motor drivers play a crucial role in meeting stringent requirements for space, cost and energy efficiency, while enabling advanced features and connectivity.

Key Benefits

• Simplified Design and Reduced Component Count
  Three-Phase System-Basis-Chips (SBCs) motor drivers include power management circuits, PWM controllers and circuit protection, and are a great companion for microcontrollers. Integrating more analog functions into a single device reduces external components required. This simplifies the PCB layout, reduces the overall size of the solution and can lower manufacturing costs.
  
  
• Improved Reliability and Cost Efficiency
  Fewer components and interconnections mean fewer points of failure. An integrated solution can enhance system reliability, which is especially important in automotive and industrial applications.
  
  
• Optimized Communication
  The integrated LIN transceiver for devices such as the ATA6847L/P enables direct communication between the motor driver and the LIN bus, which is commonly used in automotive networks for body electronics (e.g., window lifters, seat adjusters, mirror controls).
  
  
• Simplified Certification and Compliance
  Using an integrated solution can make it easier to meet automotive standards (such as AEC-Q100) and EMC requirements, as the device is designed and tested as a single unit.
  
  
• Enhanced Diagnostics and Control
  Integrated solutions often provide advanced features such as fault diagnostics, current sensing and protection mechanisms. The status and control is available via SPI interface by the motor controller/MCU and remotely through the integrated LIN transceiver for the ECU to monitor (ATA6847L/P).  

Application Examples

• Automotive
  Window lifters, seat adjusters, mirrors, HVAC blower motors, fuel pumps and cooling fans, power steering.
  
  
• Industrial
  Conveyor belts, robotic arms, automated machinery, integrating power management and communication, drones, automated guided vehicles.
  
  
• Embedded and IoT
  
  • Smart Agriculture
    Irrigation valves, feeders and remote management systems

ATA6847, ATA6847L and ATA6847P SBCs

These three-phase brushless motor gate driver SBCs for brushless motor control are designed using advanced Silicon-on-Insulator (SOI) technology. In combination with a microcontroller and six discrete power MOSFETs, the SBC forms a brushless DC (BLDC) motor control unit. The gate driver units (GDU) are controlled independently through six dedicated parallel inputs. Charge pumps for low and high-side gate drive allow duty cycle operations from 0% to 100%. In addition, the SBC provides 5V and 3.3V low dropout voltage regulators, current-sensing operational amplifiers (op amps), an integrated Back-EMF (BEMF in schematics) detection module and a window watchdog. The microcontroller controls the ATA6847/ATA6847L using an SPI interface.

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MCP8021/22: 3-Phase BLDC Motor Gate Driver With Power Module, Sleep Mode, Op Amps

3-phase BLDC power modules containing three integrated half-bridge drivers, capable of driving three external NMOS/NMOS transistor pairs. The three half-bridge drivers are capable of delivering a peak output current of 0.5A at 12V for driving high-side and low-side NMOS MOSFET transistors. The drivers have shoot-through, overcurrent and short-circuit protection. A Sleep mode has been added to achieve a typical “key off” quiescent current of 5 µA. The MCP8021/2 devices integrate a 3.3V or 5.0V LDO regulator for host and peripheral power, an overtemperature sensor and user-configurable functions.

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MCP8027: 3-Phase BLDC Motor Gate Driver With Power Module, Sleep Mode

3-phase BLDC power module, containing three integrated half-bridge drivers, capable of driving three external NMOS/NMOS transistor pairs. The three half-bridge drivers are capable of delivering a peak output current of 0.5A at 12V for driving high-side and low-side NMOS MOSFET transistors. The drivers have shoot-through, overcurrent and short-circuit protection. A Sleep mode has been added to achieve a typical “key-off” quiescent current of 5 µA.

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Want More?

To accelerate your next motor control design, explore our three-phase brushless motor and gate driver solutions and see how they can streamline development while enhancing performance.