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In today's highly automated era, the performance and efficiency of electronic products have become the focus of engineers. Toshiba's TB67H301FTG full-bridge DC motor driver IC came into being, and with its excellent technology and reliability, it has become an ideal choice for many applications. Whether in robots, home appliances, industrial automation, or other fields that require precise control and high-efficiency drive, TB67H301FTG has demonstrated strong advantages.

1. Product Overview

TB67H301FTG is a silicon monolithic integrated circuit manufactured using Bi-CDMOS technology, designed for full-bridge DC motor drive. Its DMOS output transistors and low on-resistance technology enable it to provide strong driving capabilities while having extremely high thermal efficiency.

2. Main features

1. High performance drive
   • voltage: Up to 40V
   • Output current: Up to 3A
   • Direct PWM control: Support PWM constant current control to meet various motor drive requirements
2. Multiple operation modes
   • Four operating modes, clockwise (CW), counterclockwise (CCW), short brake and stop, can be selected through the IN1 and IN2 pins to flexibly cope with different application scenarios.
3. Complete protection mechanism
   • Overcurrent protection (ISD): Prevent excessive current from damaging the circuit
   • Thermal shutdown protection (TSD): Prevent performance degradation caused by overheating
   • Undervoltage Lockout (LVD): Ensure circuit safety when voltage is too low

3. Technical specifications

• Supply voltage range: 4.5V to 24V
• Control signal input voltage: 0V to 5.5V
• range of working temperature: -40°C to 85°C
• Encapsulation：P-WQFN24-0404-0.50-004, weight only 0.036g

4. Typical Applications

1. robot technology
   • Precise PWM constant current control enables it to perform excellently in robot joint drive and motion control, providing smooth operation and efficient energy usage.
2. automated industry
   • In industrial automation equipment, TB67H301FTG can drive various DC motors to achieve efficient operation and reliable control of the equipment.
3. Home appliances
   • In household appliances such as vacuum cleaners and washing machines, TB67H301FTG provides efficient and quiet motor drive solutions to enhance user experience.

5. Function and Pin Description

TB67H301FTG has 24 pins, rich functions and flexible design. The main pin functions are as follows:

• IN1 and IN2: Control signal input pin, used to select the motor operation mode
• STBY: Standby input pin, low level enters standby mode to reduce power consumption
• OUT1 and OUT2: Motor output pin, connect the positive and negative ends of the DC motor
• VCC and VM: Power pins, providing power to the logic circuit and motor respectively
• RS/GND and PGND: Ground pin to ensure stable operation of the circuit

6. Protection function

TB67H301FTG has multiple built-in protection functions to ensure the stability and safety of the circuit under various harsh conditions:

1. Overcurrent protection (ISD): When the output current exceeds the set value, the circuit will automatically shut down the output to protect the motor and driver IC.
2. Thermal shutdown protection (TSD): When the chip temperature exceeds 170°C, the circuit will shut down the output and automatically recover when the temperature drops to a safe range.
3. Undervoltage Lockout (LVD)：When the power supply voltage is lower than the set value, the circuit will turn off the output to prevent instability caused by low voltage.