OREANDA-NEWS. Toshiba Corporation announced the launch of the "TB67S14x" constant current control motor driver series for unipolar stepping motors. The three motor drivers in the series realize a monolithic structure and small package by using the industry's leading 80V analog process. Evaluation sample shipments are scheduled to start from December, this year.

High speed, high power motor drives are required in applications that include amusement machines, home appliances and industrial equipment, where unipolar stepping motors are widely used. Driver ICs that operates such motors require a 60V or higher absolute maximum rating to hold tolerance against overshoot of reverse voltage, and a hybrid structure combining motor controllers and high voltage discrete FET (output circuit) or bipolar transistor is generally applied, resulting a large package size.

The "TB67S14x" series realize a monolithic structure by using a newly developed high voltage analog process, enabling adoption of a small package. The newly introduced QFN48 package reduces the mounting area to approximately 27% and the package volume to less than 2% that of equivalent products in a HZIP25 package, and will contribute to equipment downsizing. The series does not require the highly accurate external resistance for current detection essential for a conventional constant current control motor driver IC, due to integration of Toshiba original current detecting circuit (ACDS), which also reduces the number of materials.