Motor driver ICs reduce component count and save board space

Toshiba Electronics Europe GmbH offers four new motor driver ICs. The series comprises two constant-current dual H-bridge drivers for driving up to two motors each and a pair of two-phase bipolar stepping motor driver ICs. All four new drivers provide built-in charge pump capacitors. This signifies that even more board space can be saved, and overall system costs can be reduced.

The TB67S581FNG and the TB67S580FNG are two-phase bipolar stepping motor drivers. These devices offer a motor output voltage rating of up to 50V, with the TB67S581FNG having an output current rating of up to 2.5A and the TB67S580FNG being rated up to 1.6A.

The TB67H481FNG and TB67H480FNG are constant-current dual H-bridge drivers providing a motor output voltage rating of up to 50V and an output current rating of up to 2.5A. These ICs can be employed to power DC brushed motors or bipolar stepping motors. The pair present a choice between input interfaces, with the TB67H481FNG using a PWM input while the TB67H480FNG employs a PHASE/ENABLE input.

All four devices support motor power supply voltages from 8.2V to 44V operational range and consume less than 10μA (typ) in sleep mode. They are housed in HTSSOP28 packages with 6.4mm x 9.7mm dimensions. The mounting area of this package is approximately 39% smaller than the previous generation. Motor output on-resistance (RDS(ON)) is only 0.4-Ohm (typ) for high-side and low-side (at 24V when a 2A output current is applied). Safety features incorporate overcurrent, thermal shutdown and undervoltage lockout detection.

Key applications for the new drivers include multifunction printers, ATMs, surveillance cameras, factory automation and robotics.

Alongside the motor driver ICs, compact evaluation boards are available. Created in partnership with MikroElektronika, extending its Click Board series, Stepper 9 Click (TB67S581FNG), Stepper 20 Click (TB67S580FNG), DC Motor 13 Click (TB67H481FNG) and DC Motor 23 Click (TB67H480FNG) are supported by a mikroSDK-compliant library, simplifying software development.