Renesas Electronics launches current-emitting motor driver IC for sensorless brushless DC motor zero-speed full-tire

 


【Lansheng Technology News】Renesas Electronics recently announced the launch of its first series of sensorless motor driver ICs suitable for brushless DC (BLDC) motor applications. This series uses Renesas’ new patent-pending technology to enable motors to operate without sensors. Achieving full torque at zero speed is the first in the industry. The new motor driver IC enables Renesas customers to design sensorless BLDC motor systems with greater horsepower and speed for a given torque. In addition, power consumption is reduced, reliability is improved, and cost and board space are reduced by reducing the number of components designers need to use.


Renesas has released three new motor driver ICs using new technologies. Among them, RAA306012 is an independent 65V, 3-phase smart driver that can be paired with Renesas or various other MCUs; RAJ306101 integrates Renesas RX13T 32-bit MCU and RAA306012 in a single package, thereby reducing circuit board space and cost , improved reliability; RAJ306102 integrates Renesas RL78/G1F 16-bit MCU with RAA306012, bringing similar integration advantages.


The ability to achieve full torque at zero speed without a sensor is enabled by two Renesas innovations: Enhanced Inductive Sensing (EIS) for stable position detection when the motor comes to a complete stop; During operation, the motor rotor position recognition (MRI) method is used. At higher speeds, new motor driver ICs take a traditional approach. Both the new EIS and MRI algorithms incorporate cutting-edge patent-pending technology developed by Renesas.


Key Features of Renesas’ New Motor Driver IC

● Highly integrated, including driver, power management and current sensing

● Adaptive and adjustable dead time promotes efficiency improvement

● Charge pump maintains stable gate drive voltage under programmed settings

● Programmable gate drive voltage can drive N MOSFET and GaN FET

● Rich sensing blocks enable higher precision and wide-speed RPM driving

● 16 programmable slew rate settings to minimize electromagnetic radiation

● Supports all types of motor control algorithms such as trapezoidal, sine and FOC

● Rich protection functions improve system security


Successful product portfolio

Renesas has combined the new motor driver IC with the many compatible devices in its portfolio to create a broad "successful product portfolio" including cordless vacuum cleaners and 20V cordless leaf blowers. These "win portfolios" are based on compatible and seamlessly working devices with technically proven system architectures, resulting in optimized, low-risk designs to accelerate time to market. Renesas has now launched more than 400 "successful product portfolios" based on various products in its product lineup, enabling customers to accelerate the design process and bring products to market faster.


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