Control is secured using just three ports, unlike previous devices that required all four ports for full step control of a stepper motor. This addresses challenges in applications where the lack of MCU control ports is an issue.
The TC78H620FNG is compatible with low-voltage drives (for motor drive: 2.5V and above, for logic control: 2.7V and above) making it suitable for mobile devices with a 3.7V Li-ion battery drive. Either two DC brushed motors or a single stepping motor can be controlled. A maximum current consumption of 1µA in standby mode contributes to reduced power consumption.
Toshiba’s driver is supplied in a compact SSOP16 package that permits a smaller mounting area and helps reduce the size and cost of boards. Built-in motor protection and safety features include overcurrent detection, thermal shutdown and under-voltage lockout functionality. In addition, shoot-through current protection supports motor control without needing to consider deadtimes when switching output ON and OFF.