High-definition microstepping motor driver cuts power consumption

High-definition microstepping motor driver cuts power consumption

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By Rich Pell

The TB67S128FTG meets requirements for high speed, high performance and reduced power consumption. Toshiba’s Active Gain Control (AGC) optimizes the drive current to suit the required torque, preventing stalling and realising power savings. High-speed and high-performance motor control and lower power consumption are required for applications that include 3D printers, office equipment, banking terminals such as ATMs, cash dispensers, amusement machines, and home appliances.

The TB67S128FTG reduces noise and vibration by delivering 128 microstepping, compared to the 32 steps of other drive ICs. It also incorporates Selectable Mixed Delay (SMD) – a current adjustment function to select the best SMD configuration and optimises drive current. Toshiba’s original current detection technology, Advanced Current Detection System (ACDS) allows the control of motor current without requiring an external current detection resistor.

Higher torque operation is enabled by the high current drive (50V / 5A) while the low on-resistance (0.25Ω) reduces heat generation. The device also incorporates overcurrent protection and an open detection function that detects motor disconnection.

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