US 12,487,258 B2 · Systems and methods for power supplies with dynamic voltage drop compensation

Abstract

In one embodiment, a power supply comprises: a conversion circuit that outputs an output voltage at a first end of a cable; a remote voltage sensor measures a load delivered voltage from a second end of the cable; a control logic, wherein the power conversion circuit regulates the output voltage based on a signal from the control logic; a current sensor that measures current flow through the cable; and a resistance measurement circuit that computes a resistance of the cable as a function of the load delivered voltage, the current flow and the output voltage. The control logic regulates the load delivered voltage based on a voltage drop calculated utilizing the resistance. The control logic detects a change in the resistance of the cable based on the load delivered voltage and dynamically updates a value of the resistance for calculating the voltage drop when the change exceeds a tolerance.

Claims11

Dependent claims

A method for dynamically updating a resistance of electrical conductors configured to electrically couple an output of a power supply to a radio, wherein first ends of the electrical conductors are electrically coupled to the radio and a second ends, opposite the first ends of the electrical conductors, are electrically coupled to the output of the power supply, the method comprising:

obtaining a first resistance of the electrical conductors;
determining a first voltage at first ends of the electrical conductors based on the first resistance;
receiving a signal indicative of a voltage measured at the first ends of the electrical conductors based upon a parameter of the signal or data modulated on the signal;
determining a second voltage at the first ends of the electrical conductors based on the parameter of the signal or the data modulated on the signal;
determining a second resistance of the electrical conductors based on the second voltage;
measuring a level of current flowing through the output of the power supply;
and
providing an output voltage at the output of the power supply based on the level of current and the second resistance.

5 more elements

A power supply configured to provide electrical power through electrical conductors to an output port of a radio coupled to first ends of the electrical conductors, wherein the first ends of the electrical conductors are electrically coupled to the radio and a second ends, opposite the first ends of the electrical conductors, are electrically coupled to the output port of the power supply, the power supply comprising:

an input port;
the output port;
a current sensor configured to measure a level of current flowing through the output port;
processing circuitry coupled to the current sensor, wherein the processing circuitry is configured to control an output of power conversion circuitry, wherein the processing circuitry is configured to:
receive the level of current flowing through the output port;
obtain a first resistance of the electrical conductors;
determine a first voltage at the first ends of the electrical conductors based on the first resistance;
receive, at the output port, a measurement signal indicative of a voltage measured at the first ends of the electrical conductors based upon a parameter of the measurement signal or data modulated on the measurement signal;
determine a second voltage at the first ends of the electrical conductors based on the parameter of the measurement signal or the data modulated on the measurement signal;
determining a second resistance of the electrical conductors based on the second voltage;
and
providing a voltage control signal based upon the level of current and the second resistance;
and
the power conversion circuitry coupled to the processing circuitry, configured to receive an input voltage from the input port and the voltage control signal from the processing circuitry, and configured to provide an output voltage, based upon the voltage control signal, to the output port.

11 more elements

Dependencies are inferred from the claim text.

Systems and methods for power supplies with dynamic voltage drop compensation

Life of this patent

Systems and methods for power supplies with dynamic voltage drop compensation

Life of this patent

Abstract

Claims11