Solenoid driving device and active vibration isolating support device equipped with the same

A solenoid driving device comprising:

• a booster circuit which boosts a source voltage when supplying electric power;
• a driving circuit which drives and controls an actuator including a solenoid by supplying the actuator with the electric power which is boosted and supplied by the booster circuit;
• a drive frequency determining unit which determines a drive frequency at which the actuator is driven based on drive request information for driving the actuator;
• a target voltage determining unit which determines on the basis of the determined drive frequency a target voltage value to which the source voltage is boosted and at which the electric power is supplied to the solenoid;
• wherein
• the determined target voltage value is input to the booster circuit, and the booster circuit supplies the driving circuit with the electric power required to drive the solenoid at the target voltage value;
• and
• the target voltage value varies according to the determined drive frequency.

A solenoid driving device comprising:

• a booster circuit which boosts a source voltage when supplying electric power;
• a driving circuit which drives and controls an actuator including a solenoid by supplying the actuator with the electric power which is boosted and supplied by the booster circuit;
• a drive frequency determining unit which determines a drive frequency at which the actuator is driven based on drive request information for driving the actuator;
• a target voltage determining unit which determines on the basis of the determined drive frequency a target voltage value to which the source voltage is boosted and at which the electric power is supplied to the solenoid in such a manner that the target voltage value becomes low at least in a part of a range of the drive frequency used where the drive frequency is low, wherein the target voltage is associated with the drive frequency;
• wherein
• the determined target voltage value is input to the booster circuit, and the booster circuit supplies the driving circuit with the electric power required to drive the solenoid at the target voltage value.