Power supply dual remote sense
AssigneeDell Products L.P.
InventorsSandor T. Farkas, Quy N. Hoang
Life of this patent
Estimating the term…
Abstract
A system and method for providing a power supply dual remote sense. A power supply with a positive remote sense input is coupled to first and second load positions. The load positions are each coupled to a pull-down circuit to provide first and second voltages, respectively, to the inputs of the pull-down circuit. The pull-down circuit output is coupled to the positive remote sense input of the power supply. The voltage level of the pull-down circuit output is no greater than either of the first or second voltages provided at its inputs.
Claims21
An information handling system, comprising:
- a power supply having a positive remote sense input;
- a pull-down circuit having at least two inputs and an output, the output conductively coupled to provide a first voltage to the positive remote sense input of the power supply;
- a first load position coupled to the power supply and conductively coupled to provide a second voltage to the first input of the pull-down circuit;
- and
- a second load position coupled to the power supply and conductively coupled to provide a third voltage to the second input of the pull-down circuit;
- wherein the first voltage is no greater than either the second voltage or the third voltage.
A method for providing a feedback voltage to a power supply, comprising the steps of:
- applying power from a power supply to a first load position and a second load position;
- conductively coupling a first voltage from the first load position to a first input of a pull-down circuit;
- conductively coupling a second voltage from the second load position to a second input of the pull-down circuit;
- generating a third voltage at an output of the pull-down circuit that is no greater than either the first voltage or the second voltage;
- coupling the third voltage to a remote sense input of the power supply;
- and
- adjusting a parameter of the power applied by the power supply based on the third voltage.
An information handling system, comprising:
- a power supply having positive and negative terminals and a remote sense input;
- a first load position coupled to a first circuit including the positive and negative terminals of the power supply, the first load position including a connector capable of connecting to and disconnecting from devices;
- a second load position coupled to a second circuit including the positive and negative terminals of the power supply, at least a portion of the second circuit parallel to at least a portion of the first circuit, the second load position including a connector capable of connecting to and disconnecting from devices;
- and
- a sense module having first and second inputs and an output, the first input coupled to the first load position on a side of the connector closest to the positive terminal of the power supply, the second input coupled to the second load position on a side of the connector closest to the positive terminal of the power supply, the output coupled to the remote sense input of the power supply, a voltage at the output equal to or less than the lesser of a voltage at the first input and a voltage at the second input, and the voltage at the output within 1% of the lesser of the input voltages.
Dependencies are inferred from the claim text.