2-Channel Stepping Motor Driver

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For wide range of high-speed motion control designs

Electronics & Electricity

2-Channel Stepping Motor Driver
2-Channel Stepping Motor Driver

Toshiba Electronics  has expanded its family of stepper motor drivers with an ultra-compact device offering a maximum output withstand voltage of 40V and output current of 2.0A. The TC78S122FTG will help designers save space, reduce power consumption, lower heat dissipation and minimise vibration and acoustic noise in high-speed motion control designs. Target applications include surveillance cameras, ATMs, office automation equipment, factory automation and home appliances.

The TC78S122FTG is a two-in-one chip that delivers a 2-channel drive function, capable of running two stepping motors simultaneously. Integrating functions into a single chip frees up valuable space on the board to help reduce device size. Heat generated by the IC itself was one of the reasons that conventional drivers could not achieve continuous operation in applications requiring drive currents in the 2.0A range. However, the TC78S122FTG can simultaneously drive two channels thanks to a low maximum on resistance of 0.6Ω. It not only drives the stepping motors, but also provides an interface for driving brushed DC motors. For example, this could include one-channel for the stepping motor, and two channels for running brushed DC motors. To provide reduced vibration and noise, the product offers high-resolution motor driving of ¼ steps (max.) and a decay mode switching function for constant current control. Built-in error detection features include a thermal shutdown circuit and an overcurrent shutdown circuit to provide enhanced reliability and safety. The TC78S122FTG is housed in a compact QFN package that measures just 7mm x 7mm x 0.9mm.

Posted on November 2, 2016 - (824 views)
Toshiba Electronics Europe GmbH
Hansaallee 181
40211 Duesseldorf - Germany
+49-211-5296235
+49-211-5296404
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