comment on this article

2-phase stepping motor driver IC from Toshiba

Toshiba Electronics Europe has introduced the TB9120AFTG, a constant-current 2-phase bipolar stepping motor driver for automotive use, that can significantly streamline motor system implementations.

The device delivers a sine-wave output signal (with up to 1/32 incremental steps supported) while requiring only a simple clock input. A sophisticated microcontroller unit (MCU) or dedicated software is not required.

Each of the AEC-Q100-compliant TB9120AFTG driver ICs incorporates low on-resistance DMOS FETs, and can deliver a 1.5A (maximum) current. Thanks to the large number of micro-steps they support, motor noise can be significantly reduced, with smoother operation and more precise control being benefited from.

The built-in mixed decay mode helps to stabilise the current waveforms. Numerous protection mechanisms are incorporated, these include over-current and over-temperature detection, plus thermal shutdown. There is also a stall detection function.

These devices are supplied in compact VQFN packages (with 6.0 mm x 6.0mm dimensions) featuring wettable flanks to allow the use of automated optical inspection (AOI) for ensuring the quality of solder joints. They support an operational temperature range covering -40°C to 125°C. Key applications include battery management systems, or refrigeration circuit expansion valves for air conditioning.

Neil Tyler

Comment on this article

This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:

Add your comments


Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

Ethical Concerns

Kyle Dent talks New Electronics through some of the ethical issues that have to ...

On the charge

The UK throws away around 600 million household batteries every year, with ...