ROHM debuts integrated motor driver with TriC3™ technology

November 20, 2025 /SemiMedia/ — ROHM has introduced the BD67871MWV-Z, a three-phase brushless DC motor gate driver designed for 12- to 48-volt systems. The device integrates the company’s TriC3™ active gate drive technology, enabling lower switching losses in external FETs while suppressing ringing and keeping EMI levels low.

Electric motors account for a significant share of global power consumption, prompting manufacturers to adopt more efficient control solutions. Mid-voltage motor designs have traditionally relied on an MCU paired with three discrete gate drivers, but demand for higher efficiency and tighter control has driven wider use of integrated three-phase motor drivers. One of the main engineering challenges has been balancing power reduction with noise and EMI performance.

TriC3™ reduces switching loss and stabilizes EMI

ROHM’s TriC3™ technology monitors voltage conditions on the external FETs and adjusts gate-drive current in real time. Testing on actual motors shows the approach can lower FET heat generation by about 35% compared with ROHM’s conventional constant-current drive while maintaining comparable EMI levels.

Product rollout and related device lineup

The BD67871MWV-Z adopts a UQFN28 package and pin layout widely used in industrial mid-voltage motor driver ICs, allowing manufacturers to streamline design updates and reduce engineering overhead.

Mass production began in September 2025, with samples priced at US$5.5 each before tax. ROHM also offers general-purpose variants — the BD67870MWV-Z and BD67872MWV-Z — featuring the same package and pin configuration for constant-voltage motor drive applications.