A board includes a first motor driver control circuit, a first connector, and a second connector. The first motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector includes at least the following: a first pin to which a first output of the first H-bridge is input, a second pin to which a second output of the first H-bridge is input, and a third pin. The second connector is disposed apart from the first connector and includes at least the following: a first pin to which a first output of the second H-bridge is input, a second pin to which a second output of the second H-bridge is input, and a third pin of the second connector.

The present invention provides a motor driver and a motor driving system capable of suppressing power consumption when a motor is in a brake state. The motor driver of the present invention includes: a half-bridge power output section, including a high-side transistor and a low-side transistor; a high-side driving circuit, driving the high-side transistor; and a control portion. When switching to a brake mode, the low-side transistor is turned on and the control portion turns off the high-side driving circuit.

A motor controlling device configured to control an on-board motor is provided, which includes an H-bridge type drive circuit comprised of first switching elements and configured to drive the on-board motor, and a controlling circuit configured to control the on-board motor by controlling the drive circuit, the controlling circuit carrying out an ON control of one of the first switching elements connected to ground, when not operating the on-board motor.

A motor controlling device configured to control an on-board motor is provided, which includes an H-bridge type drive circuit comprised of first switching elements and configured to drive the on-board motor, and a controlling circuit configured to control the on-board motor by controlling the drive circuit, the controlling circuit carrying out an ON control of one of the first switching elements connected to ground, when not operating the on-board motor.

In a drive device, a first connection circuit, a second connection circuit, and a third connection circuit are connected individually between an input end and an output end. A first motor is connected between a connection node between a first input switch and a first output switch of the first connection circuit and a connection node between a third intermediate switch and a third output switch of the third connection circuit. A second motor is connected between a connection node between a second input switch and a second output switch of the second connection circuit and a connection node between a third input switch and the third intermediate switch of the third connection circuit.

In a drive device, a first connection circuit, a second connection circuit, and a third connection circuit are connected individually between an input end and an output end. A first motor is connected between a connection node between a first input switch and a first output switch of the first connection circuit and a connection node between a third intermediate switch and a third output switch of the third connection circuit. A second motor is connected between a connection node between a second input switch and a second output switch of the second connection circuit and a connection node between a third input switch and the third intermediate switch of the third connection circuit.

A steering column may include a first adjustment drive for adjustments in a length adjustment direction and a second adjustment drive for adjustments in a height adjustment direction. The adjustment drives each have a drive motor. A joint control unit for the drive motors comprises three half bridges arranged in parallel and connected between two voltage potentials. Each half bridge has a high-side switch and a low-side switch connected in series via a connection point. The connection point of the first half bridge is electrically conductively connected to a first connection of a first drive motor. The connection point of a second half bridge is electrically conductively connected to a second connection of the first drive motor and to a first connection of the second drive motor. The connection point of a third half bridge is electrically conductively connected to a second connection of the second drive motor.

An image forming apparatus includes a stacking portion, a pickup roller, a motor, an image forming unit, and a controller. Upon receiving an instruction for starting a first image forming job, the controller performs an initial operation of supplying current to a motor winding of the motor in a stop state and determining a phase of the rotor based on the flowing current. Based on the determined phase, the controller supplies current to rotate the rotor from its stop state and holds the rotor at a first phase when the first job ends. Upon receiving start instructions for a second image forming job within a period until a predetermined time elapses from when the rotor is held at the first phase, the controller rotates the rotor without performing the initial operation. The controller stops supplying current to the winding if no instructions are not received for starting the second job.

An image forming apparatus includes a stacking portion, a pickup roller, a motor, an image forming unit, and a controller. Upon receiving an instruction for starting a first image forming job, the controller performs an initial operation of supplying current to a motor winding of the motor in a stop state and determining a phase of the rotor based on the flowing current. Based on the determined phase, the controller supplies current to rotate the rotor from its stop state and holds the rotor at a first phase when the first job ends. Upon receiving start instructions for a second image forming job within a period until a predetermined time elapses from when the rotor is held at the first phase, the controller rotates the rotor without performing the initial operation. The controller stops supplying current to the winding if no instructions are not received for starting the second job.

A control unit is presented for controlling a driving unit arranged for adjustment of one or more first air guiding flaps of a motorised vehicle between a first outer position and a second outer position. The control unit comprises a communication module for communicating with a vehicle control network for receiving first adjustment instructions for adjusting the first flap, a power supply module comprising an input power terminal for receiving power from a vehicle power network and a first output power terminal for supplying a first current to the driving unit. The control unit further comprises a current sensor module for sensing variations in the first supply current and a control module arranged to control the first supply current in accordance with the adjustment instructions and the sensed variations. By separating the control module from the driving unit, functionality of the control module may be shared over multiple driving units.