Motor driving circuit
AssigneeHitachi-LG Data Storage, Inc.
InventorsHirotoshi Fukuda, Junichi Iida
Life of this patent
Estimating the term…
Abstract
A motor driving circuit includes at least one set of switching elements, each set of switching elements being two switching elements connected in series to each other, and a diode connected in parallel with one of the two switching elements connected on a power source side, a terminal of a motor to be driven being connected to a junction point between the two switching elements. A voltage transfer element is provided for transferring, from the junction point between the two switching elements, a voltage of a counter electromotive force generated at the motor, to an input end of the other of the two switching elements connected on a ground side.
Claims5
A motor driving circuit comprising at least one set of switching elements, each set of switching elements being two switching elements connected in series to each other, and a diode connected in parallel with one of said two switching elements connected on a power source side, a terminal of a motor to be driven being connected to a junction point between said two switching elements, wherein:
- a voltage transfer element is provided for transferring, from a junction point between said two switching elements, a voltage of a counter electromotive force generated at the motor, to an input end of another one of said two switching elements connected on a ground side, said another switching element being turned on by a voltage caused by that said counter electromotive force generated at the motor is transferred thereto through said voltage transfer element.
Dependencies are inferred from the claim text.