Source: ROHM
    Shanghai, China, October 23, 2025 - ROHM, a globally renowned semiconductor manufacturer headquartered in Kyoto, Japan, today announced the launch of the "BD67871MWV-Z" three-phase brushless DC motor driver IC, which adopts the "TriC3TM" technology and is suitable for medium withstand voltage systems (12V to 48V systems). By equipping ROHM's own drive logic, this motor driver IC has successfully achieved low EMI*1 while reducing the heat generation of the FET. However, there is a trade-off between these two aspects, and it is usually difficult to achieve both simultaneously.

    The electricity consumption of motors accounts for approximately 60% of the global electricity consumption. From the perspective of energy efficiency, it is increasingly important to further enhance their control technology. Especially in application products with voltage levels ranging from 12V to 48V, the mainstream solution for motor drives typically adopts a simple architecture that controls three gate drivers through an MCU. However, in recent years, the demand for high-efficiency and precise control has been on the rise, and the solution combining MCU with integrated three-phase motor drivers is accelerating its popularization. On the other hand, three-phase motor drivers also face technical challenges - there is a trade-off between "suppressing power consumption" and "reducing noise", which has long been regarded as difficult to balance both simultaneously. In response to these issues, ROHM has fully leveraged its advanced circuit control technology accumulated in the development of various gate driver ics such as motor drivers, and successfully developed a new technology called "TriC3TM" that can simultaneously suppress "power consumption" and "noise".
    The new product adopts ROHM's own intelligent gate drive technology "TriC3TM", which can rapidly sense the voltage information from the FET and perform gate control in real time. By adopting this control method, not only is the heat generation reduced by lowering the power consumption of the FET during switching, but also the generation of ringing *2 is suppressed, achieving low EMI characteristics. According to actual motor verification, compared with ROHM's previous constant current drive products, the new product can reduce the FET heat generation by approximately 35% under the same EMI level. In addition, the new product adopts the commonly used packaging form (UQFN28) and pin arrangement for medium-voltage industrial equipment motor driver ics, which helps to reduce the workload during circuit modification and new design.
    The new product has started mass production since September 2025 (sample price: 800 yen per piece, excluding tax). In addition, ROHM also offers evaluation boards (BD67871MWV-EVK-003) that can assist in the development and design of application products. This product has also opened up e-commerce sales channels and can be purchased through e-commerce platforms.
    In addition, ROHM has also launched constant voltage drive universal motor drivers (BD67870MWV-Z, BD67872MWV-Z) that adopt the same packaging and pin configuration as the new products. From the general type to the adoption of TriC3 this time? ROHM's high value-added products in technology can offer a rich product range to meet the diverse needs of customers. In the future, ROHM will continue to be committed to improving motor efficiency, enhancing the functionality, performance and energy consumption of application products.

＜Product lineup＞

＜Application example＞
    Industrial equipment: Various motors used in electric drill bits, electric screwdrivers, industrial fans and other equipment
    Consumer electronics: various motors used in vacuum cleaners, air purifiers, air conditioners, exhaust fans and other devices, as well as electric-assisted bicycles

＜TriC3TM＞
    The real-time segmentation constant current control drive technology developed by ROHM. By precisely setting the control gate current in three stages, high-speed and efficient operation is achieved, while suppressing the ringing phenomenon, which helps to reduce noise and ensure stable operation.
    "TriC3TM" is a trademark or registered trademark of ROHM Co., Ltd.

 
＜Term explanation＞
    1) EMI (Electromagnetic Interference)
    EMI is an indicator used to measure how much noise the operation of an object product generates and whether it causes problems for peripheral ics and the system. The "low EMI characteristic" means that very little noise is generated.
    2) Ring the bell
    High-frequency oscillation and overshoot phenomena generated during switching. This phenomenon is caused by the resonance of the parasitic inductance and parasitic capacitance in the circuit when the MOSFET operates on and off.

 

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