Providing overvoltage protection by using redundant feedback pins
AssigneeJuniper Networks, Inc.
InventorPhilip R. Quaife
Life of this patent
Estimating the term…
Abstract
A circuit board includes a controller, a first feedback pin, and a second feedback pin. The controller determines a first voltage measurement associated with the first feedback pin. The controller further determines whether the first feedback pin is disconnected from the controller based on the first voltage measurement. The controller determines a second voltage measurement associated with the second feedback pin when the first feedback pin is disconnected from the controller. The controller also adjusts an output voltage of the controller based on the second voltage measurement when the first feedback pin is disconnected from the controller.
Claims20
A circuit board comprising:
- a first feedback pin, at a first location of the circuit board, to determine a first voltage measurement at the first location;
- a second feedback pin, at a second location of the circuit board, to determine a second voltage measurement at the second location;
- and
- a controller to:
- determine whether the first feedback pin is disconnected from the controller,
- determine an amount of an output voltage based on the second voltage measurement when the first feedback pin is disconnected from the controller,
- determine the amount of the output voltage based on the first voltage measurement or the second voltage measurement when the first feedback pin is not disconnected from the controller, and
- adjust the amount of the output voltage transmitted across the circuit board based on at least one of the first voltage measurement or the second voltage measurement.
A method comprising:
- determining, by a controller of a circuit board, a first voltage measurement associated with a first feedback pin of the circuit board;
- determining, by the controller, whether the first feedback pin is disconnected from the controller based on the first voltage measurement;
- determining, by the controller, a second voltage measurement associated with a second feedback pin, of the circuit board, when the first feedback pin is disconnected from the controller;
- and
- adjusting, by the controller, an output voltage of the controller based on the second voltage measurement when the first feedback pin is disconnected from the controller.
A method comprising:
- providing a controller on a circuit board, where the controller comprises a converter to provide an output voltage;
- providing a first feedback pin on the circuit board, where the first feedback pin is to receive the output voltage as a first input voltage;
- and
- providing a second feedback pin on the circuit board, where the second feedback pin is to receive the output voltage as a second input voltage,
- where the controller is further to:
- adjust an amount of the output voltage based on a first voltage measurement of the first input voltage when the first voltage measurement is greater than zero, and
- adjust the amount of the output voltage based on a second voltage measurement of the second input voltage when the first voltage measurement is equal to zero or below a minimum predefined threshold.
Dependencies are inferred from the claim text.