The L298N driver module, using ST's L298N chip can directly drive two 3-30V DC motor, and provides a 5V output interface can 5V single-chip circuitry to supply, support 3.3VMCU control, you can easily control the DC motor speed and direction, you can also control the 2-phase stepper motor, smart car essential. Using L298N made by ST company as the control chip,the module has such characteristics as strong driving ability, low calorific value and strong anti-interference ability. Features: ? This module uses ST's L298N as the main driver chip, which has the characteristics of strong driving ability, low heat generation and strong anti-interference ability. ? This module can use the built-in 78M05 to take power from the drive power supply, but in order to avoid damage to the voltage regulator chip, when using a drive voltage greater than 12V, please use an external 5V logic power supply. ? This module uses large-capacity filter capacitors and freewheeling protection diodes, which can improve reliability. Precautions: 1. When your driving voltage (identified as 12V input in the above figure, the actual acceptable input range is 7-12V) is 7V When -12V, the onboard 5V logic power supply can be enabled. After using the onboard 5V power supply, the +5V in the interface The power supply does not need to input voltage, but it can lead out 5V voltage for external use. (This is a regular application!) 2. When the driving voltage is higher than 12V and less than or equal to 24V (the chip manual proposes that it can support up to 35V, but according to the experience The general experience of 298 conservative application maximum voltage support to 24V is already very remarkable! ), for example, to drive a rated voltage of 18V motor. First, the jumper cap of the onboard 5V output enable must be removed. Then connect 5V externally to the 5V output port 5V enable is a control signal with a level of 5V. When the signal input is valid and the power supply in the motor drive module is normal, the motor drive module outputs current. Otherwise, even if the power supply is normal, there will be no current on the motor. The voltage supplies power to the logic circuits inside the L298N. (This is an unconventional application for high voltage drives!)
