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Toshiba expands line-up of motor controller, driver ICs

31 Jul 2014

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Toshiba America Electronic Components Inc. has released a couple of additions to its family of motor controller and driver ICs. The TC78H610FNG and TB67Z800FTG motor driver ICs promise to save space, thereby simplifying design, for a wide range of motor applications, noted the company.

The TC78H610FNG is an H bridge driver for low-voltage brushed DC motors, such as those used in battery-powered equipment, camera equipment and household electrical devices. Supplied in a SSOP16 package, it can reduce the required mounting area by 21 per cent compared to products with similar functionality housed in SSOP20 packages. This, in turn, enables a reduction in both PCB cost and equipment size.

The TC78H610FNG can control two brushed DC motors or one stepping motor. It has an operating voltage range from 2.5-15V and maximum output current of 1A. Output ON resistance is 1.2Ω (typical).

The second IC, the TB67Z800FTG, is a three-channel half-bridge driver that incorporates six double-diffused MOSFETs (DMOS). It can control a three-phase brushless DC motor by turning the DMOS on and off with the input signals from an MCU. The device includes shoot-through current protection whereby its logic circuit prevents the half-bridge MOSFETs from being turned on simultaneously. This capability removes the responsibility from the microcontroller, thus reducing the load on the MCU.

The TB67Z800FTG operates at 4-22V and has a maximum output current of 3A. Its 5 x 5 x 0.9mm leadless VQFN package enables the IC to be mounted on a small cooling fan with its thermal radiation pad designed to further enhance cooling. The TB67Z800FTG can be used in high-performance brushless DC motor applications such as server fans, water pumps and vacuum blowers.

Both devices incorporate over-current detection, thermal shutdown circuitry and an under-voltage lockout circuit to improve safety.

Both the TC78H610FNG and TB67Z800FTG entered mass production earlier this month. Samples are available.

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