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An H bridge circuit is used by the bipolar stepper motor’s internal driver to reverse the current flow through the phases. All of the coils can be used to turn the motor by energising the phases and switching the polarity.
By better using the coil windings than a typical unipolar stepper motor, bipolar stepper motors are more powerful and cost-effective to operate. The majority of the necessary instructions and behaviours are typically handled by an integrated driver chip, despite the fact that bipolar stepper motors are technically more difficult to manage.
As a result of unipolar stepper motors’ ability to perform stepping functions without requiring the current flow to be reversed, which makes their internal electronics much simpler and less expensive to produce, the trade-off is that they are typically more expensive at first than standard unipolar versions.
The Global Bipolar stepper motor driver market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
A stepper motor of the 1.8° or 0.9° high-torque type, the PKP series offers much increased torque. Higher torque is provided, resulting in smoother performance, less heat, and space savings.
With microstepping and a programmable current profile look-up table to enable flexible adaption of the stepper motor characteristics and intended operating circumstances, the L9942 is an integrated stepper motor driver for bipolar stepper motors. Depending on the goal criteria—audible noise, vibrations, rotation speed, or torque—different current profiles may be used.