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Toshiba expands motor controller portfolio

Posted: 08 Nov 2007 ?? ?Print Version ?Bookmark and Share

Keywords:stepping motor driver? H-bridge DC motor drivers?

TB6593FNG

Toshiba America Electronic Components Inc. (TAEC) has added three devices to its line of motor drivers: a new stepping motor driver (TB6560AHQ/AFG) and two new H-bridge DC motor drivers (TB6559FG and TB6593FNG).

The TB6560AHQ/AFG was designed to control the two- phase bipolar stepping motors used in printers, where the driver's two phase operation can provide smoother transition between motor speeds to prevent paper jams. The TB6559FG and TB6593FNG DC motor drivers target applications such as vending machines, gaming machines, printers and small appliances.

The TB6560AHQ/AFG is a pulse width modulation (PWM) controlled, chopper-type, sinusoidal, micro-step bipolar stepping motor driver. It supports the excitation modes 2-phase, 1-2-phase, 2W1-2-phase and 4W1-2-phase, as well as forward/reverse mode. The TB6560AHQ/AFG provides a low vibration, high-performance drive for 2-phase bipolar type stepping motors using only one clock signal. The driver was developed in Toshiba's BiCD (bipolar/CMOS/DMOS) process.

The TB6559FG full-bridge DC motor driver IC offers support for two motor control-operating modes, either internal constant current PWM (for Vref between 0V and 3V) or direct PWM (for Vref between 4.5V and VREG). The TB6593FNG motor driver IC has a very low R(on) of 0.35, which allows the device to provide high performance while drawing power at levels similar to a motor driver intended for battery-powered applications. The TB6559FG operates with an output current of up to 2.5A (peak) and supply voltages of up to 30V. The TB6593FNG operates with an output current of up to 3.2A (peak) and supply voltages of up to 13.5V. These devices were also developed in Toshiba's BiCD manufacturing process.

"Toshiba offers a wide range of motor control solutions with specifications that provide real-world benefits to the consumers that use the devices these drivers reside in, be it smoother action printer feed motors to reduce paper jams or more power efficient drivers that can save dollars and cents on an electric bill," said Andrew Burt, VP of imaging and communications marketing group in the ASSP business unit at TAEC.

TB6560AHQ/AFG supports several excitation modes, including 4W-1-2 phase excitation. It has a high output withstand voltage of 34V (max) and reset and enable mode. It also offers HZIP25 and HQFP64 packages are selectable for power or surface mount.

The TB6593FNG driver touts a low voltage detection circuit and Pb-free small faced package (0.65mm pitch).

TB6559FG offers selectable control modes: direct PWM and constant-current PWM. It also has forward, reverse, short break and stop function modes.

All devices feature built-in overheat protection circuit. Engineering samples of the TB6560AHQ/AFG will be available in Q4, with mass production set to begin by year-end.

Both the TB6559FG and TB6593FNG are currently in mass production. The evaluation price in 10,000 unit quantities for the TB6560AHQ/AFG is $ 3.30 each, 62 cents for the TB 6 559FG and 66 cents each for the TB 6 593FNG.




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