New dual-channel H-bridge motor driver IC with PWM control


Toshiba Electronics Europe GmbH has expanded its portfolio of driver solutions for brushed DC and stepper motors with the launch of the TC78H660FNG. This H-bridge motor driver IC, based on the company’s latest generation DMOS process, can produce a PWM-controlled current of 2A (maximum). Running off a 2.5V to 16V input supply voltage, the device can drive two brushed DC motors or a single stepper motor.

The on-resistance of this driver at typical operating conditions is only 0.48Ohm. This is highly beneficial from a thermal management standpoint, as there is much less heat that requires to be dissipated - thereby leading to system cost and space savings.

The driver is ideal for a wide spectrum of potential applications including mobile devices running off a 3.7V Li-Ion battery and 5V USB-powered equipment, as well as 12V-rated household appliances. Supporting energy-efficient operation, it provides ultra-low current needs when in standby mode, drawing 0.1µA. An array of safety features has been included. These include under-voltage lockout, over-current detection and thermal shut down. Keeping PCB utilisation to a minimum, this IC is provided in a compact 5mm x 6.4mm TSSOP16 package.