Renesas RAJ306001 and RAJ306010 motor control ICs

Renesas Electronics has expanded its motor control solutions portfolio with two system-in-package (SiP) solutions to simplify brushless DC (BLDC) motor control design for a wide range of cordless battery-powered applications such as power tools, drones, water pumps, vacuums, cleaning robots, fans and other systems.

Combining multiple functions into a SiP solution, the RAJ306001 and RAJ306010 motor drive ICs deliver low- or high-speed rotation and high torque control while minimising required board space. This results in a turnkey design for easy, efficient and safe BLDC motor control.

The single-package motor control ICs control three-phase BLDC motors used in a wide range of battery-powered devices. The ICs integrate an RL78/G1F microcontroller (MCU) and pre-driver into an 8 x 8 mm QFN package. The highly integrated SiP form factor allows users to eliminate as many as 30 external components, shrinking the solution area by up to 50%.

Designed with heat management in mind, the ICs feature self-aligned dead time (SADT) to prevent the shoot through and offer adjustable pre-driver output current capacity — up to 500 mA — to drive large-capacity MOSFETs, which makes heat dissipation design easy. This allows the ICs to drive MOSFETs at the optimum switching timing — reducing FET switching margin times to around one-tenth of the time compared with conventional systems and enabling efficient motor drive control with reduced heat generation, according to the company.

With the prevalence of motor-based devices such as power tools cutting the cord, demand is high for motor control solutions that deliver high output levels, long-term operation and safety improvements while adhering to size constraints. Renesas’s sensor-less motor control ICs are designed to pack the control, high-precision and high-efficiency levels that users require in a small package.