Toshiba Electronics: new stepper-motor controller

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Toshiba Electronics Europe has begun sampling a new 40V/3.0A stepper-motor control.

The IC requires no external current-sense resistors, and hence enables more economical and compact drives in equipment.

Toshiba’s Advanced Current Detection System (ACDS), integrated in the new 5mm x 5mm TB67S508FTG stepper-motor controller, performs on-chip current sensing thereby saving component costs.

In addition, the built-in power stage leverages the latest DMOS technology to boost energy efficiency, which aids space-saving design and eases thermal management by reducing internal heat generation. Toshiba’s Advanced Dynamic Mixed Decay (ADMD) mode ensures smooth and quiet movement over a wider speed range by maintaining accurate step control up to high speeds.

The transistors of the output bridge have very low on-resistance (RDS(ON) of 0.45Ω typical, high-side + low-side).

The TB67S508FTG for 2-phase bipolar stepper-motor applications supports full-, half- and quarter-step resolution modes, and is delivered in a space-saving QFN36 package.

The controller is suitable for printers, office machines, surveillance cameras, banking terminals, banknote identification machines, and home appliances.

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