Semiconductor device and power feed system
AssigneeRenesas Electronics Corporation
InventorTakefumi ENDO
Life of this patent
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Abstract
A semiconductor device includes a power supply circuit which generates an output voltage to be supplied to a USB device connected to a USB connector, a sensing circuit which senses an output voltage or an output state of the power supply circuit, a control circuit which controls the power supply circuit, and a register which stores an output set voltage value associated with the power supply circuit or various types of information. The control circuit outputs a notification signal based on a result of sensing by the sensing circuit to the outside.
Claims13
A semiconductor device comprising:
- a power supply circuit which generates an output voltage to be supplied to a USB device connected to a USB connector;
- a sensing circuit which senses the output voltage or an output state of the power supply circuit;
- a control circuit which controls the power supply circuit;
- and
- a register which stores an output set voltage value associated with the power supply circuit or various types of information,
- the control circuit outputting a notification signal based on a result of sensing by the sensing circuit to outside.
A semiconductor device comprising:
- a power supply unit which generates an output voltage to be supplied to a USB device connected to a USB connector;
- and
- a control unit which controls the power supply unit,
- the power supply unit including
- a power supply circuit,
- a sensing circuit which senses an output voltage or an output state of the power supply circuit,
- a power supply control circuit which controls the power supply circuit, and
- a register which stores an output set voltage value associated with the power supply circuit or various types of information,
- the power supply control circuit having the register store the output set voltage value of the power supply circuit or information on a state of the power supply circuit based on a result of sensing by the sensing circuit, and
- the control unit performing a prescribed operation based on the output set voltage value of the power supply circuit or the information on the state of the power supply circuit stored in the register.
A power feed system which feeds power to a USB device connected to a USB connector, the power feed system comprising:
- a control unit which obtains information on an output voltage which can variably be set for driving the USB device by communicating with the USB device;
- and
- a power supply unit which generates an output voltage to be supplied to the USB device based on the obtained information on the output voltage,
- the power supply unit including
- a power supply circuit,
- a sensing circuit which senses an output voltage or an output state of the power supply circuit,
- a power supply control circuit which controls the power supply circuit, and
- a register which stores information on the power supply circuit,
- the power supply control circuit outputting a notification signal based on a result of sensing by the sensing circuit to outside.
Dependencies are inferred from the claim text.