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Toshiba Releases DC Brushed Motor Driver IC with Current Limiter Detection

September 26, 2018

TOKYO--(BUSINESS WIRE)--Sep 26, 2018--Toshiba Electronic Devices & Storage Corporation (“Toshiba”) today launches an integrated dual H-bridge DC brushed motor driver IC that includes an output current limiter function rated at 50V / 3.0A. The new TB67H401FTG device can handle applications where monitoring and feedback of the motor state is necessary, including office equipment, ATMs, home appliances, robotic cleaners and more—all devices that have grown in popularity in recent years and that often incorporate DC brushed motors.

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Toshiba: An integrated dual H-bridge DC brushed motor driver IC “TB67H401FTG” that includes an output current limiter function. (Photo: Business Wire)

Until now, safe control of DC brushed motors has been accomplished by limiting the upper value of the motor current through a constant current limit. Over current is generated by the motor lock and is read from an external resistor through external circuitry, operational amplifiers and comparators, which increases the component count and circuit complexity.

The highly integrated TB67H401FTG is fabricated with Toshiba’s BiCD process and has an inbuilt flag output circuit, which monitors the current state and indicates when it has reached the upper threshold. This ends the need for external circuitry and delivers smaller, more efficient motor solutions with reduced BOM costs.

The TB67H401FTG supports a total of four drive modes; forward (CW), reverse (CCW), brake (short brake) and stop (off). It also includes a mode switching function that extends the application range. Single-bridge mode supports a single channel current of up to 6.0A, while dual-bridge mode allows use of two motors, with a single IC driving up to 3.0A per motor.

The low on-resistance MOSFETs incorporated into the H-bridge (High side + Low side =0.49Ω typ.) ensure low losses and efficient operation. An internal regulator allows the device to be driven from a single 5V supply.

The tiny device is housed in a 7mm x 7mm x 0.9mm QFN48 package, which also includes thermal shutdown detection, over current protection and under voltage lockout. A general error detection signal enhances system safety by providing a warning to the main system controller.

TB67H401FTG is now in mass production.

Applications Applications that need to monitor and feedback results on the motor drive state—industrial equipment, including office equipment and ATMs, home appliances, and robotic cleaners.

Main features 1. Flag output function A flag output function outputs results from the current limiter detection to an external device. It helps reduce the number of external amplifiers and comparators.

2. Mode switching function (single-bridge and dual-bridge modes) Single-bridge mode supports high load drives (large current drive of 6.0 A). Dual-bridge mode supports driving of two motors with a single IC (3.0 A / 2 channels). It widens the range of applications.

3. Other error detections Thermal shutdown detection, over current protection, and under voltage lockout. The error detection signal can be output to the external device, helping to enhance safety.

For further information about the new product, please visit: https://toshiba.semicon-storage.com/ap-en/product/linear/motordriver/detail.TB67H401FTG.html

Customer Inquiries Mixed Signal IC Sales and Marketing Department Tel: +81-44-548-2876 https://toshiba.semicon-storage.com/ap-en/contact.html

Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba Electronic Devices & Storage Corporation Toshiba Electronic Devices & Storage Corporation combines the vigor of a new company with the wisdom of experience. Since becoming an independent company in July 2017, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Our 19,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 700-billion yen (US$6 billion) and to contributing to a better future for people everywhere. Find out more about us at https://toshiba.semicon-storage.com/ap-en/company.html

View source version on businesswire.com:https://www.businesswire.com/news/home/20180925006329/en/

CONTACT: Media Inquiries:

Toshiba Electronic Devices & Storage Corporation

Chiaki Nagasawa, +81-3-3457-4963

Digital Marketing Department

semicon-NR-mailbox@ml.toshiba.co.jp

KEYWORD: ASIA PACIFIC JAPAN

INDUSTRY KEYWORD: TECHNOLOGY CONSUMER ELECTRONICS HARDWARE OTHER TECHNOLOGY SEMICONDUCTOR MANUFACTURING OTHER MANUFACTURING

SOURCE: Toshiba Electronic Devices & Storage Corporation

Copyright Business Wire 2018.

PUB: 09/26/2018 02:50 AM/DISC: 09/26/2018 02:50 AM

http://www.businesswire.com/news/home/20180925006329/en

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