A semiconductor device and a power-off method of the semiconductor device, the semiconductor device including a first power source group including first and second power sources, a second power source group including a third power source and a power sequence controller. The power sequence controller performs power-on operations and power-off operations of the first to third power sources. The power sequence controller starts a power-off operation of the first power source group at a first time, and starts a power-off operation of the second power source group when the power voltage of the first power source group becomes a first voltage or when a first reference time has passed from the first time.

One or more embodiments relate to a multi-phase voltage regulator with AVP or droop configured to implement a non-linear load line. According to certain aspects, the non-linear load line can have a non-linear or zero slope in a first current/voltage region and a constant non-zero slope in second current/voltage region. In embodiments, the non-linear or zero slope region can specify that for any value of output current in that region, the output voltage will be the same predetermined value. The non-zero slope region can specify that for any value of the output current in that region, output current will be multiplied by a constant non-zero droop resistance value.

One or more embodiments relate to a multi-phase voltage regulator with AVP or droop configured to implement a non-linear load line. According to certain aspects, the non-linear load line can have a non-linear or zero slope in a first current/voltage region and a constant non-zero slope in second current/voltage region. In embodiments, the non-linear or zero slope region can specify that for any value of output current in that region, the output voltage will be the same predetermined value. The non-zero slope region can specify that for any value of the output current in that region, output current will be multiplied by a constant non-zero droop resistance value.

A communication device includes an interface connector for connecting to a computing circuit to receive a media data and an external power supply, a transmission circuit, wherein the circuit transmits the media data to a network, a battery power supply, a controller circuit powered by the battery power supply, a sensor, communicatively coupled to the controller circuit, for detecting a movement of the communication device, a switch circuit for switchably connecting the battery power supply to the transmission circuit responsive to a first switch control signal, and a test circuit, communicatively coupled to the controller circuit, for generating the first switch control signal based on an external power control signal indicating whether the interface connector is connected to the computing circuit and a motion detection signal indicating whether the sensor detects the movement of the communication device.

An electronic device, according to various embodiments, comprises: a battery connecting circuit; a charging circuit for supplying power supplied from an external electronic device to a component and battery of the electronic device; and a processor. The processor may be configured to: in a first state in which the electronic device of which the battery is not connected to the battery connecting circuit receives power from the external electronic device, measure the voltage of the battery when it is confirmed that the battery is connected to the battery connecting circuit; and after confirming the capacity of the battery on the basis of the measured voltage, switch to a second state in which the charging circuit supplies power from the external electronic device to the battery connected to the battery connecting circuit. Various other embodiments may be provided.

An operational circuit of a virtual currency data processing device includes: at least two operational chip groups (31) configured to operate within respective operating voltage threshold ranges of the operational chip groups (31) to receive a communication signal which includes an issued task, perform calculations according to the issued task, and transmit a communication signal which includes a calculation result; a control module (32) configured to operate within an operating voltage threshold range of the control module (32) to transmit the communication signal which includes the issued task and receive the communication signal which includes the calculation result; at least two signal forwarding and electrical isolation modules, each of which is communicatively connected to the control module and a respective operational chip group and is configured to forward communication signals between the control module and the respective operational chip group, and isolate an operating voltage threshold of the operational chip groups from an operating voltage threshold of the control module to make the operational chip groups and the control module capable of identifying communication signals sent by each other.

An operational circuit of a virtual currency data processing device includes: at least two operational chip groups (31) configured to operate within respective operating voltage threshold ranges of the operational chip groups (31) to receive a communication signal which includes an issued task, perform calculations according to the issued task, and transmit a communication signal which includes a calculation result; a control module (32) configured to operate within an operating voltage threshold range of the control module (32) to transmit the communication signal which includes the issued task and receive the communication signal which includes the calculation result; at least two signal forwarding and electrical isolation modules, each of which is communicatively connected to the control module and a respective operational chip group and is configured to forward communication signals between the control module and the respective operational chip group, and isolate an operating voltage threshold of the operational chip groups from an operating voltage threshold of the control module to make the operational chip groups and the control module capable of identifying communication signals sent by each other.

A housing of an example of an electronic apparatus has a top surface and a bottom surface and has a flat shape. A power supply section having a flat shape is a power supply section, which is a housing case capable of accommodating a battery or is a battery, and the power supply section is provided at a position inside the housing that intersects with a reference plane perpendicular to the up-down direction. A first substrate is provided parallel to the reference plane on the top surface side relative to the power supply section. A second substrate is provided parallel to the reference plane on the bottom surface side relative to the power supply section. The electronic apparatus includes at least one of a vibrator and a speaker at a position that intersects with the reference plane.

A housing of an example of an electronic apparatus has a top surface and a bottom surface and has a flat shape. A power supply section having a flat shape is a power supply section, which is a housing case capable of accommodating a battery or is a battery, and the power supply section is provided at a position inside the housing that intersects with a reference plane perpendicular to the up-down direction. A first substrate is provided parallel to the reference plane on the top surface side relative to the power supply section. A second substrate is provided parallel to the reference plane on the bottom surface side relative to the power supply section. The electronic apparatus includes at least one of a vibrator and a speaker at a position that intersects with the reference plane.

A control method of a power supply path includes detecting a plug-in state of a first connector through a configuration channel pin of the first connector; acquiring a plurality of rated voltages of a first power adaptor externally connected to the first connector and a rated current corresponding to each of the rated voltages; detecting a plug-in state of a second connector through a direct-current (DC) input pin of the second connector; acquiring a power quota of a second power adaptor externally connected to the second connector; selecting, from the plurality of rated voltages, the largest one that is not greater than an operating voltage, as a selected rated voltage; calculating a power quota of the selected rated voltage; and controlling a switching circuit to couple a power circuit to a power pin of one of the first and second connectors according to the two power quotas.