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Dual Full-Bridge Driver L298N

2016-05-16 19:04  
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L298N Dual Full-Bridge Driver


The L298N is an integrated monolithic circuit in a 15-lead Multi watt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the connection of an external sensing resistor. An additional supply input is provided so that the logic works at a lower voltage.

L298N Dual Full-Bridge Driver


L298N capable of handling loads up to 4A with a voltage 6-46V. in the circuit above the pin 6 and 11 are enabledwhich we can plug it into an OCR pins on the microcontroller to control the motor rotation. then pin 5 and 7 areinput to the H-bridges M1 and M2, and to pins 10 and 12 are input to the M3 and M4. LM2937 regulator used tohave a maximum input voltage of 26V. If you supply more than it can be replaced by 7805 that can handle inputvoltages up to 30V. Diode 1N5818 30V also has limitations. To a higher, use a 1N5819 which has the capabilityup to 35V.