The motor coil is fully utilized due to the bipolar drive, allowing the motor to attain the best drive.Ī stepping motor subdivision driving circuit is constructed when two pieces of L297 are used to drive the two windings of a stepping motor through L298, and the Vref corresponding to each winding is adjusted through two D/A converters. A double full bridge mode is used to power it. The stepper motor's power output is driven by the L298. Set the drive signal (A, B, C, D) and the motor current. The L297 is a stepper motor controller that produces two-phase bipolar voltage. It's powered by a constant current mode, and each phase's peak current can reach 2A. A two-phase bipolar stepper motor drive circuit can be built using L297 and L298.
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