Abstract: The present invention relates to driving apparatus for a brushless direct current motor, comprising: at least three half-bridge circuits, each having two switches connected in series and being configured to supply a voltage to a terminal of a rotor coil; a zero crossing detection module configured to detect whether the rotor coils experience BEMF zero crossing and provide a control module with an indication signal that indicates whether the rotor coils experience BEMF zero crossing, based on a type of the brushless direct current motor; and a control module configured to transmit to the zero crossing detection module information regarding the type of the brushless direct current motor, and generate and output, based on the indication signal, pulse width modulation signals to control the switches of the half-bridge circuits. The driving apparatus may drive a plurality of types of brushless direct current motors.

Abstract: The present invention relates to driving apparatus for a brushless direct current motor, comprising: at least three half-bridge circuits, each having two switches connected in series and being configured to supply a voltage to a terminal of a rotor coil; a zero crossing detection module configured to detect whether the rotor coils experience BEMF zero crossing and provide a control module with an indication signal that indicates whether the rotor coils experience BEMF zero crossing, based on a type of the brushless direct current motor; and a control module configured to transmit to the zero crossing detection module information regarding the type of the brushless direct current motor, and generate and output, based on the indication signal, pulse width modulation signals to control the switches of the half-bridge circuits. The driving apparatus may drive a plurality of types of brushless direct current motors.

Abstract: A Local Interconnect Network (LIN) driver circuit employs a charging/discharging current applied to the gate of a driver transistor coupled to an LIN bus. The charging current includes a constant charging current and an additional soft charging current, whereas the discharging current includes a constant discharging current and an additional soft discharging current. As a result of the soft charge/discharge components, there is a significant reduction in electromagnetic emission on the LIN bus.