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Sharing of external components for the control of the switching dead-time of a plurality of integrated devices cooperating in driving and R-L multiphase actuator
Sharing of external components for the control of the switching dead-time of a plurality of integrated devices cooperating in driving and R-L multiphase actuator
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机译:共享外部组件,以控制在驱动和R-L多相执行器中协作的多个集成设备的开关死区时间
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摘要
In multiphase driving systems of electric motors in a switching mode employing distinct integrated half-bridge output stages, the use of multiple external components for each integrated half-bridge stage to implement functions of adjustment of the switching dead-time and of disabling/enabling of the half-bridge stage can be avoided and an improved matching obtained by using single external components connected in common to the dedicated pins of all the distinct integrated half-bridge output stages. This is achieved by duplicating the disabling comparator, respectfully for the power transistor of the pull-up branch and for the power transistor of the pull-down branch in each integrated half-bridge stage.
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