FAN MOTOR DRIVING MEANS, DRIVING METHOD, AND COOLING DEVICE AND ELECTRONIC EQUIPMENT USING THE SAME

摘要

The present invention inhibits the voltage jump of a source voltage or an output voltage by an approach which is different from a conventional one. A logic circuit allows an H bridge circuit to be shifted among a plurality of states in a specific sequence. A compulsory regenerating circuit is configured to be switched between an enabled state and a disabled state; while being in the enabled state, the current that flows in from a ground line via the H bridge circuit and a motor coil to a power line back-flows to the ground line.

主权项

1. A motor driving device, characterized for driving a single-phase motor and comprising:
an H bridge circuit, configured to receive a source voltage and a ground voltage, and couple to a motor coil of the single-phase motor between a first output and a second output thereof; a logic circuit, configured to allow the H bridge circuit to be shifted among a plurality of states in a specific sequence; and a compulsory regenerating circuit, configured to be switched between an enabled state and a disabled state, and while being in the enabled state, allow a current flowing from a ground line via the H bridge circuit and the motor coil to a power line to back-flow to the ground line.