Pairing features for driving DC motors with parallel capacitors in overcurrent recovery mode

By introducing protection circuit devices and logic circuit devices into the DC motor controller circuit, using blanking window mechanism and parallel motor capacitors, the problems of accidental shutdown and radio frequency interference of DC motors in overcurrent recovery mode are solved, achieving higher stability and reliability.

CN120200182APending Publication Date: 2025-06-24INFINEON TECHNOLOGIES AG
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Patent Information

Application Number
CN202411880037.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-12-22
Filing Date
2024-12-19
Publication Date
2025-06-24

AI Technical Summary

Technical Problem

Prior art When controlling a DC motor, overcurrent recovery mode may cause the motor to be accidentally shut down, and charging and discharging of the parallel motor capacitor during OCR mode may cause radio frequency interference.

Method used

A motor controller circuit device is designed, including a protection circuit device and a logic circuit device. By storing pairing information, the protection circuit device is controlled to apply a blanking window in the overcurrent recovery mode to avoid unnecessary motor shutdown, and to reduce radio frequency interference through parallel motor capacitors.

Benefits of technology

It effectively prevents unexpected motor shutdown caused by overcurrent recovery mode, reduces RF interference, and improves system stability and reliability.

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Abstract

The invention relates to a pairing feature for driving a DC motor having a shunt capacitor in an overcurrent recovery mode. The motor controller circuitry is configured to operate two or more motors by driving motors connected to output terminals of the motor controller circuitry. Each output terminal of the motor controller circuitry may be connected to a driver circuit of the motor controller circuitry. Two or more motors may share an output terminal. For a motor sharing an output terminal, operation of a first motor may affect operation of other motors connected to the shared output terminal. The motor controller circuitry may store information about output terminals that may be paired, i.e., information about output terminals that may be connected to the same motor. Based on the pairing information stored by the motor controller circuitry, protection circuitry of the motor controller circuitry may operate to prevent accidental shutdown of the motor due to operation of another motor sharing the same output pin.
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