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Dual unipolar motor driver geared for stepping motors

13 Aug 2014

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Toshiba Corp. has announced the TB67S158, a dual unipolar motor driver IC for stepping motors. The company's current driver IC TB67S149 can control only one unipolar motor, but the TB67S158 can support dual motor control by incorporating an 8ch-MOSFET. For example, by setting the output to the constant voltage control mode, 4ch-outputs can control the motor while the other 4ch can control the other motor.

The number of motors and driver ICs required in products including amusement machines, home appliances and industrial equipment, is growing. On top of this, manufacturers are being asked to downsize equipment to save space and cut energy consumption. As a result, driver ICs are increasingly expected to play multiple roles in driving motors.

Incorporating a monolithic package structure using Toshiba's latest analogue high-voltage process has realised both a small, high-radiation, surface-mounting type package and lead-inserting type package (SDIP) for flow mounting. This package line-up meets various requirements for space-saving equipment and support part reductions toward downsizing the equipment.

TB67S158

The TB67S158 incorporates 8ch-MOSFET outputs to control dual unipolar motors simultaneously and integrates a monolithic structure by adopting the latest analogue high-voltage process (BiCD 130nm, 80V). This reduces the mounting space and number of parts, compared with that of control circuits based on transistor arrays, and so on. It also features surface-mounting type QFN package, best suited for downsizing of the module and set, and mounting type SDIP package for flow mounting, can be selected. In addition, the TB67S158 features thermal shutdown circuit and overcurrent shutdown circuit. Higher equipment safety and reliability are maintained by outputting ERR signal in operation.

The device can be used in amusement machines such as pachinko and video slot machines; home appliances such as refrigerators and air conditioners; industrial equipment including banking terminals, office- and factory-automation equipment.

Sample shipments start today, with mass production scheduled to start in October.




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