Abstract: A control device includes a control portion that controls a power supply portion that supplies power to a load based on received power received by a power receiving portion from a power transmitting device. In the case where the power receiving portion, after receiving a signal having a first frequency and a first duty from the power transmitting device, receives a signal having a second frequency that is different from the first frequency or a signal having a second duty that is different from the first duty, the control portion specifies an issued command based on a length of a reception period of the signal having the second frequency or the signal having the second duty.

Abstract: A control device includes a control portion that controls a power supply portion that supplies power to a load based on received power received by a power receiving portion from a power transmitting device. In the case where the power receiving portion, after receiving a signal having a first frequency and a first duty from the power transmitting device, receives a signal having a second frequency that is different from the first frequency or a signal having a second duty that is different from the first duty, the control portion specifies an issued command based on a length of a reception period of the signal having the second frequency or the signal having the second duty.

Abstract: A control device includes a control portion that controls a power supply portion that supplies power to a load based on received power received by a power receiving portion from a power transmitting device. In the case where the power receiving portion, after receiving a signal having a first frequency and a first duty from the power transmitting device, receives a signal having a second frequency that is different from the first frequency or a signal having a second duty that is different from the first duty, the control portion specifies an issued command based on a length of a reception period of the signal having the second frequency or the signal having the second duty.

Abstract: A control device includes a control portion that controls a power supply portion that supplies power to a load based on received power received by a power receiving portion from a power transmitting device. In the case where the power receiving portion, after receiving a signal having a first frequency and a first duty from the power transmitting device, receives a signal having a second frequency that is different from the first frequency or a signal having a second duty that is different from the first duty, the control portion specifies an issued command based on a length of a reception period of the signal having the second frequency or the signal having the second duty.

Abstract: An integrated circuit includes: an over-discharge detection circuit that is supplied with electric power from a secondary battery, and is configured to detect whether or not the secondary battery is in an over-discharged state, and upon detecting that the secondary battery is in an over-discharged state over a predetermined period, stop a detection operation according to an enable signal; and a power down cancel circuit configured to, when the over-discharge detection circuit has stopped the detection operation, cause the over-discharge detection circuit to re-start the detection operation when a current supplied to a detection terminal from a power feeding circuit is a predetermined current or more.

Abstract: A control device to be used in a power receiving device that receives power from a power transmitting device by contactless power transmission includes a power supply portion that supplies power to a load based on power received by a power receiving portion, a communication portion that performs communication in which communication data is transmitted to the power transmitting device, and a control portion that controls the power supply portion and the communication portion. The control portion causes the communication portion to start the communication when an output voltage of the power receiving portion becomes higher than a first voltage, and causes the power supply portion to start power supply to the load when, after the communication is started, the output voltage of the power receiving portion becomes higher than a second voltage that is different from the first voltage.

Abstract: Provided are a circuit device, a control device, a power receiving device, an electronic device, and the like that realize measurement of a remaining battery amount and excessive discharge detection with low power consumption, and can reduce power consumption from a battery. The circuit device includes a measurement circuit that measures a battery voltage, an interface circuit that outputs battery voltage information to a processing device, and a control circuit. The measurement circuit has a counter, a resistance circuit that divides the battery voltage by a voltage division ratio set by a count value of the counter, and a comparator that compares an output voltage of the resistance circuit with a reference voltage. When power supply to the processing device is off, the counter sets the count value to a fixed value, and the control circuit performs battery protection control processing based on the comparison result of the comparator.

Abstract: Provided are a control device, a power receiving device, an electronic device, a contactless power transmission system, and a control method capable of preventing an unintentional shutdown release in an electronic device that charges a secondary battery using a contactless power transmission. The control device includes a charging-system circuit that charges a charging subject based on electric power received from a power transmission device, and a discharging-system circuit that supplies power to a processing device based on electric power from the charging subject. The charging-system circuit has a charging-system control circuit that operates based on electric power received by the charging-system circuit. The charging-system control circuit receives a shutdown release notification sent from the power transmission device after the power receiving device is docked to the power transmission device, and based on the shutdown release notification, releases a shutdown state.

Abstract: A power reception control device provided in a power reception device of a non-contact power transmission system includes a power-reception-side control circuit that controls an operation of the power reception device, and a power supply control signal output terminal that supplies a power supply control signal to a charge control device, the power supply control signal controlling power supply to a battery. The power-reception-side control circuit controls a timing at which the power supply control signal (ICUTX) is output from the power supply control signal output terminal. The operation of the charge control device is compulsorily controlled using the power supply control signal (ICUTX).

Abstract: A control device includes a control portion that controls a power supply portion that supplies power to a load based on received power received by a power receiving portion from a power transmitting device. In the case where the power receiving portion, after receiving a signal having a first frequency and a first duty from the power transmitting device, receives a signal having a second frequency that is different from the first frequency or a signal having a second duty that is different from the first duty, the control portion specifies an issued command based on a length of a reception period of the signal having the second frequency or the signal having the second duty.

Abstract: The control device includes a charging-system circuit and a discharging-system circuit. The discharging-system circuit has a discharging-system control circuit, and a power supply circuit that performs power supply to a processing device. The discharging-system control circuit performs a first control that, when the power supply is in an off state, when motion of the power receiving device is detected by a motion sensor, switches the power supply to an on state based on a detection signal from the motion sensor, and a second control that switches the power supply between the on state on the off state based on a control signal. The discharging-system control circuit, in the first control, disables the second control when motion of the power receiving device has been detected by the motion sensor.

Abstract: A control device controls a first power transmission driver that applies a first drive signal to a first primary coil and a second power transmission driver that applies a second drive signal to a second primary coil. When intermittent power transmission is performed by applying the second drive signal in a period in which normal power transmission is performed by applying the first drive signal, a controller of the control device sets the phase difference between the first drive signal and the second drive signal to a predetermined phase difference.

Abstract: A control device on a power receiving side includes a charging portion that charges a battery based on power that is received by a power receiving portion that receives power from a power transmitting device, a control portion 54 that performs charging control, and a nonvolatile memory. The nonvolatile memory stores status information of the battery, and the control portion performs charging control based on the status information stored in the nonvolatile memory.

Abstract: A control device includes a control portion that controls a power supply portion that supplies power to a load based on received power received by a power receiving portion from a power transmitting device. In the case where the power receiving portion, after receiving a signal having a first frequency and a first duty from the power transmitting device, receives a signal having a second frequency that is different from the first frequency or a signal having a second duty that is different from the first duty, the control portion specifies an issued command based on a length of a reception period of the signal having the second frequency or the signal having the second duty.

Abstract: In the case where it is detected that a power receiving device has been removed from a power transmitting device, a control device turns on a power supply operation of a power supply portion when an operation mode is set to a first mode, and turns off the power supply operation of the power supply portion when the operation mode is set to a second mode.

Abstract: A control device, an electronic apparatus, a contactless power transmission system, and the like that can suppress deterioration in battery characteristics caused by recharging and realize power saving or the like. A control device on a power receiving side in a contactless power transmission system including a power transmitting device and a power receiving device includes: a charging unit that charges a battery based on power received by a power receiving unit that receives power from the power transmitting device; a discharging unit that performs an operation of discharging the battery and supplies the power from the battery to a power supply target; and a control unit that controls the discharging unit. The control unit starts the discharging operation of the discharging unit after an output voltage (VCC) of the power receiving unit has decreased and a start-up period (TST) of the discharging operation has elapsed.

Abstract: A power reception control device provided in a power reception device of a non-contact power transmission system includes a power-reception-side control circuit that controls an operation of the power reception device, and a power supply control signal output terminal that supplies a power supply control signal to a charge control device, the power supply control signal controlling power supply to a battery. The power-reception-side control circuit controls a timing at which the power supply control signal (ICUTX) is output from the power supply control signal output terminal. The operation of the charge control device is compulsorily controlled using the power supply control signal (ICUTX).

Abstract: A power reception control device provided in a power reception device of a non-contact power transmission system includes a power-reception-side control circuit that controls an operation of the power reception device, and a power supply control signal output terminal that supplies a power supply control signal to a charge control device, the power supply control signal controlling power supply to a battery. The power-reception-side control circuit controls a timing at which the power supply control signal (ICUTX) is output from the power supply control signal output terminal. The operation of the charge control device is compulsorily controlled using the power supply control signal (ICUTX).

Abstract: A control device controls a first power transmission driver that applies a first drive signal to a first primary coil and a second power transmission driver that applies a second drive signal to a second primary coil. When intermittent power transmission is performed by applying the second drive signal in a period in which normal power transmission is performed by applying the first drive signal, a controller of the control device sets the phase difference between the first drive signal and the second drive signal to a predetermined phase difference.

Abstract: Provided are a circuit device, a control device, a power receiving device, an electronic device, and the like that realize measurement of a remaining battery amount and excessive discharge detection with low power consumption, and can reduce power consumption from a battery. The circuit device includes a measurement circuit that measures a battery voltage, an interface circuit that outputs battery voltage information to a processing device, and a control circuit. The measurement circuit has a counter, a resistance circuit that divides the battery voltage by a voltage division ratio set by a count value of the counter, and a comparator that compares an output voltage of the resistance circuit with a reference voltage. When power supply to the processing device is off, the counter sets the count value to a fixed value, and the control circuit performs battery protection control processing based on the comparison result of the comparator.