POWER TRANSMISSION DEVICE AND ELECTRONIC INSTRUMENT
First Claim
1. A power transmission device that includes a primary coil and electromagnetically couples the primary coil with a secondary coil of a power reception device to supply power to a load of the power reception device, the power transmission device comprising:
- coil connection terminals respectively connected to ends of the primary coil;
a resonant capacitor that forms a series resonant circuit with the primary coil;
a first power transmission driver and a second power transmission driver that drive the primary coil from the ends of the primary coil through the coil connection terminals; and
a control IC that outputs driver control signals to the first power transmission driver and the second power transmission driver,the coil connection terminals, the resonant capacitor, the first power transmission driver, the second power transmission driver, and the control IC being provided on a substrate;
the control IC being formed in the shape of a quadrangle that has a first side, a second side, a third side, and a fourth side, a first output terminal that outputs the driver control signal to the first transmission driver being provided adjacent to the first side, a second output terminal that outputs the driver control signal to the second transmission driver being provided adjacent to the second side crossing the first side, and an input terminal that receives a signal waveform at one of the coil connection terminals through a waveform detection wiring pattern being disposed adjacent to the third side opposite to the second side;
the resonant capacitor, the first power transmission driver, and the second power transmission driver being disposed between a first substrate side and the control IC, the first substrate side being parallel to the first side of the control IC; and
the waveform detection wiring pattern extending in an area between a second substrate side parallel to the third side of the control IC and an extension of the third side of the control IC and being connected to one of the coil connection terminals.
1 Assignment
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Accused Products
Abstract
A power transmission device includes a resonant capacitor that forms a series resonant circuit with a primary coil, a first power transmission driver and a second power transmission driver that drive the primary coil, and a control IC that outputs driver control signals to the first and second power transmission drivers. The resonant capacitor, the first and second power transmission drivers, and the control IC are provided on a substrate. An output terminal that outputs the driver control signal to the first transmission driver is provided on a first side of the control IC, an output terminal that outputs the driver control signal to the second transmission driver is provided on a second side of the control IC, and an input terminal that receives a signal waveform at one of coil connection terminals through a waveform detection wiring pattern is disposed on a third side of the control IC. The resonant capacitor, the first power transmission driver, and the second power transmission driver are disposed between a first substrate side parallel to the first side of the control IC and the control IC, and the waveform detection wiring pattern extends in an area between a second substrate side and an extension of the third side of the control IC and is connected to one of the coil connection terminals.
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Citations
11 Claims
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1. A power transmission device that includes a primary coil and electromagnetically couples the primary coil with a secondary coil of a power reception device to supply power to a load of the power reception device, the power transmission device comprising:
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coil connection terminals respectively connected to ends of the primary coil; a resonant capacitor that forms a series resonant circuit with the primary coil; a first power transmission driver and a second power transmission driver that drive the primary coil from the ends of the primary coil through the coil connection terminals; and a control IC that outputs driver control signals to the first power transmission driver and the second power transmission driver, the coil connection terminals, the resonant capacitor, the first power transmission driver, the second power transmission driver, and the control IC being provided on a substrate; the control IC being formed in the shape of a quadrangle that has a first side, a second side, a third side, and a fourth side, a first output terminal that outputs the driver control signal to the first transmission driver being provided adjacent to the first side, a second output terminal that outputs the driver control signal to the second transmission driver being provided adjacent to the second side crossing the first side, and an input terminal that receives a signal waveform at one of the coil connection terminals through a waveform detection wiring pattern being disposed adjacent to the third side opposite to the second side; the resonant capacitor, the first power transmission driver, and the second power transmission driver being disposed between a first substrate side and the control IC, the first substrate side being parallel to the first side of the control IC; and the waveform detection wiring pattern extending in an area between a second substrate side parallel to the third side of the control IC and an extension of the third side of the control IC and being connected to one of the coil connection terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification