ChipSourceTek-CST6307 is a driver chip designed for brushed DC motors with outstanding performance and multiple protection features. The chip is capable of operating in a voltage range of 6.5V to 25V and provides peak current up to 3.6A. A current modulation circuit is integrated into the design to set the operating current through the VREF pin and the external sensing resistor ISEN.

1. Product overview

    The ChipSourceTek-CST6307 is a driver for brushed DC motors with a wide operating voltage range (6.5V-25V) and a maximum peak current capability of 3.6A. The driver chip integrates current regulation and can be connected to the controller via a simple PWM interface, enabling precise control of the motor. When the system does not need to drive the motor, it can enter a low-power sleep mode, significantly reducing energy consumption. At the same time, it also provides internal shutdown functions such as UVLO (undervoltage lock) and overheat protection to ensure the safe operation of the equipment in abnormal conditions.

2. Main features

    The main features of ChipSourceTek-CST6307 include:

1.     Single channel H-bridge motor driver：Capable of driving a DC motor, stepper motor, or other load.

2.     Low on-resistance：The total on-resistance of the high + low side is only 560mΩ, which helps to improve energy efficiency.

3.     Pulse width modulation (PWM) control interface：Allows the user to control the voltage or power of the output signal by changing the ratio of the high level time to the low level time of the signal.

4.     Built-in protection：Undervoltage latching (UVLO) and thermal shut-off (TSD) are included to prevent damage to the chip due to too low voltage or too high temperature.

5.     Low power sleep mode：When the system is inactive, the chip can automatically enter a sleep state, reducing energy consumption.

3. Application fields

    ChipSourceTek-CST6307 is suitable for a variety of application scenarios, including but not limited to high-current toys, robots, printers, POS machines, home appliances, and other small mechanical devices. These applications typically require high performance, reliability, and flexibility in motor drives, and the ChipSourceTek-CST6307 is designed to meet these needs.

4. Working principle and advantages

    The ChipSourceTek-CST6307 is an H-bridge configuration consisting of four n-channel MOSFETs for bidirectional control of the motor. This design allows the motor to switch between forward and reverse, making it ideal for applications that require frequent changes of direction. In addition, the chip supports a current attenuation mode to adjust the motor speed by pulse width modulation (PWM) of the input signal for smooth motion control.

     A notable feature of the ChipSourceTek-CST6307 is its low-power sleep mode. When the motor does not need to run, the chip can enter a low-power state, which not only reduces energy consumption, but also extends battery life. This is especially important for battery-powered devices, as it directly affects the device's portability and usage time.

5, installation and use precautions

    When using ChipSourceTek-CST6307, note the following:

1.     Power supply selection：Ensure that the supply voltage is between 6.5V and 25V to avoid exceeding the recommended range.

2.     Heat dissipation measure：Since the chip will generate heat when working, it is necessary to take appropriate heat dissipation measures, such as using heat sinks or installing the chip in a well-ventilated location.

3.    Current monitoring：The current flowing through the motor is monitored via the ISEN pin to ensure that it does not exceed the maximum rating of the chip.

4.     Logic input control：Properly connect the two logical inputs to control the state of the H-bridge driver to avoid device damage due to misoperation.

5.     Protection mechanism：Using the UVLO and TSD functions provided by the chip, it can respond in time to abnormal voltage and excessive temperature, and protect the motor from damage.

    The ChipSourceTek-CST6307 is a powerful and flexible brushed DC motor driver used in a wide range of devices requiring precise control and high performance. Its unique design combines advanced technology and practical features to provide users with a cost-effective and efficient solution.