| 摘要 |
<p>The present invention relates to a motor driving device capable of reducing voltage headroom losses due to shunt resistance by detecting a current from a connection point of a PMOS transistor and an NMOS transistor of a motor driving circuit. The motor driving device comprises: a driving unit which includes a first transistor unit and a second transistor unit that are connected to each other in parallel between a driving power end and a ground, wherein the first transistor has a first PMOS transistor and a first NMOS transistor that are connected to each other in series between the driving power end and the ground, and the second transistor unit has a second PMOS transistor and a second NMOS transistor that are connected to each other in series between the driving power end and the ground, and which drives a motor according to switching operations of the first and second transistor units by connecting the motor to a connection point of the first PMOS transistor and the first NMOS transistor and a connection point of the second PMOS transistor and the second NMOS transistor; and a detection unit to detect a current from the connection point of the PMOS transistor and the NMOS transistor of at least either the first transistor unit or the second transistor unit.</p> |
