MCM packaging shrinks stepper motor driver

A Toshiba Electronics Europe product story

Edited by the Electronicstalk editorial team Mar 21, 2001

The TA84002F stepper motor driver from Toshiba Electronics uses an innovative multichip module design to improve thermal performance and reduce board space requirements.

The new TA84002F stepper motor driver from Toshiba Electronics uses an innovative multichip module design to improve thermal performance and reduce board space requirements by 66% compared with equivalent devices housed in conventional packages.

Designed to drive both windings of a two-phase stepper motor, the new device incorporates a main bipolar chip and four P-channel mosfets within a low-profile surface-mount HSOP20 package measuring only 16.5 x 12.0 x 2.7mm.

The TA8400F is a chopper-type stepper motor driver offering full-step or half-step variation by means of internal PWM (pulse width modulation) current control.

It features built-in thermal protection circuitry and requires no additional external diodes.

Suitable for motor supply voltages ranging from 10 to 30V, the TA84002F has an output current rating of 1A and a low on-resistance of typically 0.6ohm.

Operating temperature range is specified as -30 to +85C.