US 2024/0266952 A1 · POWER SUPPLY CONTROL METHOD AND POWER SUPPLY DEVICE

Abstract

A method for controlling supply of power from a power source to a terminal device includes monitoring voltage inputted from the power source, and determining a maximum suppliable power on the basis of an input-output relationship that has been set in advance. Control is executed control so as to supply to the terminal device an output power equal to or lower than the maximum suppliable power. In the input-output relationship, first to N-th input voltage ranges IR1-IRN are set as input voltage ranges in an ascending order, and first to N-th output power values OP1-OPN are set as discrete values respectively corresponding to the first to N-th input voltage ranges in an ascending order. In the monitoring, one of the output power values corresponding to the input voltage range to which an input voltage from the power source belongs is determined as the maximum suppliable power value.

Claims8

Dependent claims

A method for controlling supply of power from a power source to a terminal device, the method comprising:

a monitoring step monitoring input voltage from the power source to decide a maximum suppliable power value, which is suppliable to the terminal device, based on a predetermined input-output relationship set in advance, wherein:
in the predetermined input-output relationship, first to Nth input voltage ranges are defined in ascending order as input voltage ranges while first to Nth output power values having discrete values are defined in ascending order as output power values, where N is an integer equal to or larger than 2, and the first to Nth output power values are respectively made to correspond to the first to the Nth input voltage ranges;
and the output value corresponding to the input voltage range to which the input voltage from the power source belongs is set as the maximum suppliable power value;
and
a control step controlling output power to supply the output power equal to or smaller than the maximum suppliable power value to the terminal device.

2 more elements

A power supply device comprising:

a voltage converter which converts input voltage from a power source to supply voltage based on a control signal;
a power source voltage monitor which monitors the input voltage from the power source to decide a maximum suppliable power value, which is suppliable to the terminal device, based on a predetermined input-output relationship set in advance, wherein:
in the predetermined input-output relationship, first to Nth input voltage ranges are defined in ascending order as input voltage ranges while first to Nth output power values having discrete values are defined in ascending order as output power values, where N is an integer and equal to or larger than 2, and the first to the Nth input voltage ranges are respectively made to correspond to the first to Nth output power values;
and the output power value corresponding to the input voltage range to which the input voltage from the power source belongs is set as the maximum suppliable power value;
and
a PD (power delivery) controller which controls the voltage converter so that the supply voltage corresponds to a power value equal to or smaller than the maximum suppliable power value.

3 more elements

Dependencies are inferred from the claim text.

Power supply control method and power supply device

Life of this patent

Power supply control method and power supply device

Life of this patent

Abstract

Claims8