Toshiba Electronic Components & Storage Devices Corporation announces the launch of a new generation of brushed motor driver ICs, the TB67H420FTG, to expand its lineup of small surface mount (SMT) brushed motor driver ICs for high voltage and large current drive applications for home use Sweeping robots, printers and other office equipment.
High-power drives are essential requirements for printers and other office equipment, bank terminals, cash dispensers, and home appliance motors that require high torque drive. As the range of applications increases, the market for miniaturization and savings The demand for space equipment is also on the rise.
High-power brushed-motor drives require high-voltage outputs and therefore require high-power motor drivers and inrush currents that are unique to brushed motors Adopting a discrete component (MOSFET) combinational circuit with high voltage and low on-resistance characteristics Is a common solution.However, although this method enables high-power drive, it leads to an increase in the number of components, which hinders the miniaturization of the motor.
The TB67H420FTG supports advanced high-power drivers that help save space by using a small surface mount package that also controls two brushed motors (50V, 4.5A / two channels) because it includes a dual bridge mode , Each channel can be individually controlled in a separate internal output unit.
In addition to these improvements, the new driver IC incorporates not only the basic built-in error detection functions, such as overheating and overcurrent, but also the most commonly used error detection signal output function to support the evaluation of specific errors using external devices.
Features
High-voltage, high-current driver High-voltage, high-current driver with Toshiba's latest 130nm process technology Built-in single bridge mode (9.0A large current drive) and dual bridge mode (4.5A high current drive / 2 channels) , Support for a variety of different applications.
Low heat generation using low on-resistance (TB67H420FTG: 0.17Ω - single bridge mode, 0.33Ω double bridge mode - upper limit + lower limit: typical), the heat generated during motor drive decreases.
The small package features a small, thermally enhanced QFN package that allows the user to simplify the thermal design of the chip and the module for cost-effective solutions in terms of space and cost.
Built-in error detection circuit In addition to over-temperature protection, over-current protection and under-voltage lockout, there is also integrated motor load open-circuit detection function.