Toshiba TC78H670FTG Ultra-Compact Stepper Motor Driver
Toshiba TC78H670FTG Ultra-Compact Stepper Motor Driver is a capable and flexible two-phase bipolar stepping motor driver that uses a PWM chopper and exhibits built-in dual H-bridges. This motor is suitable for 1 to 4-cell batteries or 12V-powered industrial, consumer, and healthcare devices requiring high integration. The TC78H670FTG stepping motor driver can operate from 2.5V to 16V with 2A output current handling capabilities. This motor driver features a 128-step resolution that offers ultra-precision control without a complex closed-loop design. The TC78H670FTG stepping motor driver allows full, half, quarter, 1/8, 1/16, 1/32, 1/64, and 1/128 step operations.
The TC78H670FTG stepping motor driver incorporates a built-in Advanced Current Detection System (ACDS) to eliminate the need for a sense resistor for current protection. This feature saves both cost and board space. This driver offers thermal shutdown (TSD), over-current shutdown, motor-load open, and under-voltage lockout (UVLO) error detect functions with a flag output function. The TC78H670FTG stepper motor driver provides flexibility in controlling speed and direction in simple clock input or host-supported serial interface. This motor driver comes housed in a compact and thermally efficient QFN16 package.
Features
- Built-in dual H-bridges capable of controlling one bipolar stepping motor
- Good power density 2.5-16V/2.0A
- PWM-controlled constant-current drive
- 2.5V to 16V power supply operating voltage
- 2A output current ratings (maximum) with an ultra-low standby current of 0.1uA (maximum)
- Low on-resistance (high + low side = 0.48Ω (typical)) MOSFET output stage
- Advanced Current Detection System (ACDS) eliminates the need for the current protection sense resistor
- The chopping frequency of a motor can be adjusted by the external resistor
- 128 micro-step allows ultra-fine adjustments between steps, even for the low-resolution type of stepper motors
- Allows full, half, quarter, 1/8, 1/16, 1/32, 1/64, and 1/128 step operations
- Multi-error detection functions
- Thermal Shutdown (TSD)
- Overcurrent Shutdown Detection (ISD)
- Motor-load Open (OPD)
- Under-voltage lockout (UVLO)
- Error detection (TSD/ISD/OPD) flag output function
- Built-in VCC regulator for an internal circuit
- Small QFN16 package with thermal pad (3mm x 3mm and 0.5mm pitch)
Applications
- Surveillance cameras
- PTZ Web conference cameras
- Smart locks
- Motorized shades and blinds
- Portable devices
- Dispensers
- Actuators
- Toy robotics
Block Diagram
Additional Resource
Related Development Tool
SparkFun ProDriver Stepper Motor Driver Kit
Makes it easy to start developing with the TC78H670FTG bipolar stepper motor driver from Toshiba.
Mikroe Stepper 8 Click
Motor control add-on board that features the Toshiba TC78H670FT stepping motor driver.
Related Products
Toshiba TC78H660FTG Dual H-Bridge Driver
For one or two DC brushed motors that incorporate DMOS with low on-resistance in output transistors.