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Toshiba Launches Surface-mount Brushed Motor Driver IC

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Toshiba Electronic Devices & Storage Corporation has broadened its line-up of small surface-mount brushed motor drivers with the addition of “TB67H420FTG," which supports high-voltage, large-current drive for home-use robot vacuum cleaners, printers and other office equipment. Mass production starts immediately.

A high power drive is a basic requirement for the motors used in printers and other office equipment, banking terminals, cash dispensers, and home appliances that need high torque drive. As the scope of application increases, so too does the demand for downsizing and space-saving devices.

Realizing high-power brushed motor drives requires high-voltage output, which imposes demands on high-power motor drivers, and support for rush current, which is peculiar for brushed motors. Combination circuits, applying discrete components (MOSFET) with high-voltage and low on-resistance characteristics, are the usual solution. However, while this approach realizes high-power drive, it increases the component count and prevents motor downsizing.

TB67H420FTG support industry-leading high power drives[1], and contributes to space-saving by adopting a small surface-mount package. It can even control two brushed motors (50V, 4.5A / 2 channels), as it incorporates a dual bridge mode that can control each channel independently in the separated internal output unit. In addition to these advances, and alongside essential built-in error detections for over temperature, over current, etc., the new driver also integrates a frequently requested error detection signal output function, which allows an external device to evaluate specified errors.

Toshiba Electronic Devices & Storage Corporation positions TB67H420FTG as its flagship next-generation DC brushed motor driver, due to its high level capabilities in realizing high-voltage and large-current drive, and its wider range of applications as a result of its dual bridge mode and error detection signal output function.


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