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Brushed DC motor driver IC supports high voltages, currents

Posted: 28 Aug 2013 ?? ?Print Version ?Bookmark and Share

Keywords:motor driver? home appliance? office automation equipment?

Toshiba America Electronic Components Inc. has introduced a 2-channel motor driver IC supporting the high voltage and current requirements of brushed DC motors in industrial and office automation (OA) equipment under continuous operation. According to the firm, the TB67H400A improve operation for various applications such as home appliances, ATMs, banknote recognition equipment, amusement park machines and office automation equipment.

Toshiba leveraged its latest high-voltage analogue process in the design of the TB67H400A. The device realises a 50V maximum rating and low-on resistance of 0.5 (maximum, sum of the upper and lower side MOSFETs) during motor drive output, thereby creating a maximum operating current of 3A (4A rated), per channel, for a 2-channel drive. Toshiba's unique parallel channel control function (high-current mode) delivers a 6A maximum operating current (8A rated) when 2-channel outputs are used as a 1-channel driver.

The driver IC is available in a four package line-up to address various customer requirements. A thermally efficient ZIP package improves power dissipation for applications that need a continuous motor drive at high current. Small QFN and HTSSOP packages enable downsizing of equipment and reduction of material costs. An HSOP package allows flow soldering on a paper phenolic board that helps reduce cost of PCB development.

The TB67H400A integrates abnormality detection functions for high reliability. The IC includes a thermal shutdown circuit, over-current shutdown circuit and under-voltage lockout circuit.

Sample pricing for the TB67H400A is $2.40. Samples have begun shipping with mass production scheduled for October 2013.





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