Coil driver IC having a circuit capable of placing a coil connected output terminal into a floating state

A coil-sharing electric device comprising:

• a coil;
• a first coil-driving IC having a first output terminal connected to a first terminal of the coil and a second output terminal connected to a second terminal of the coil;
• and
• a second coil-driving IC connected to both the first terminal of the coil and the second terminal of the coil,
• wherein,
• the first coil-driving IC comprises:
• a first switch connected to the first output terminal,
• a second switch connected to the second output terminal,
• a current driving part comprising a first current terminal connected to the first output terminal via the first switch and a second current terminal connected to the second output terminal via the second switch, and
• a gate driving part controlling the first switch and the second switch so that, when the coil is driven by a current provided from the first current terminal or the second current terminal, the first switch and the second switch are in an ON state, otherwise, the first switch and the second switch are in an OFF state.