MOTOR DRIVER DEVICE AND SEMICONDUCTOR APPARATUS

• Main Author: SUGIE TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 11.03.2021
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To make a contribution to improvement in operation involved in a windowless driving system.SOLUTION: A driving control unit, of a motor driver device, for drivingly switching a DC motor, detects a zero-cross timing of counter electromotive force generated in a coil in a prescribed phase of the DC motor during a window section for stopping a current flow to the coil in the prescribed phase, and drivingly controls the motor by a first driving system (window driving system) of drivingly controlling the motor on the basis of the detected zero-cross timing of counter electromotive force, or by a second driving system (windowless driving system) of drivingly controlling the motor on the basis of a zero-cross timing of a driving current flowing through the coil in the prescribed phase and a zero-cross timing of a driving voltage applied to the coil in the prescribed phase. The driving control unit is configured to be able to detect a zero-cross timing of counter electromotive force by setting a window section even when drivingly controlling the motor by the second driving system.SELECTED DRAWING: Figure 17 【課題】ウィンドウレス駆動方式に関わる動作の改善に寄与する。【解決手段】直流モータをスイッチング駆動するモータドライバ装置の駆動制御部は、直流モータの所定相のコイルに対する通電を停止させるウィンドウ区間において所定相のコイルに生じる逆起電力のゼロクロスタイミングを検出し、逆起電力の検出ゼロクロスタイミングに基づいてモータの駆動制御を行う第１駆動方式（ウィンドウ駆動方式）、又は、所定相のコイルに流れる駆動電流のゼロクロスタイミングと所定相のコイルに印加される駆動電圧のゼロクロスタイミングに基づいてモータの駆動制御を行う第２駆動方式（ウィンドウレス駆動方式）にて、モータの駆動制御を行う。駆動制御部は、第２駆動方式にてモータの駆動制御を行っているときにも、ウィンドウ区間を設定して逆起電力のゼロクロスタイミングを検出可能に構成されている。【選択図】図１７