Control loop parameter setting in a voltage regulator controller
AssigneeInfineon Technologies Austria AG
InventorsZhiqing You, Tim Ng, Benjamim Tang
Life of this patent
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Abstract
A method is provided for configuring a controller for a voltage regulator system having an output filter response set by an inductance (L) and a capacitance (C). The method includes applying one or more pulses of known on-time and off-time to the voltage regulator system, and taking measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time. The method further includes constructing a model of the output filter response of the voltage regulator system based on the measurements, and setting one or more control loop parameters of the controller based on the model of the output filter response.
Claims18
A method of configuring a controller for a voltage regulator system comprising an output filter having an output filter response that is based upon an inductance (L) and a capacitance (C) of the output filter, the output filter response describing a relationship of an input to an output of the output filter, the method comprising:
- applying one or more pulses of known on-time and off-time to the voltage regulator system;
- taking measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time;
- constructing a model of the output filter response of the voltage regulator system based on the measurements;
- and
- setting one or more control loop parameters of the controller based on the model of the output filter response, wherein operation of the control loop is based upon the control loop parameters,
- wherein the controller is configured to implement a linear control loop and the one or more control loop parameters are coefficients that define operation of the linear control loop,
- wherein the setting of the one or more control loop parameters comprises adjusting nominal control loop parameters based upon a difference between the constructed model of the output filter response and a nominal model of the output filter response.
A voltage regulator system comprising:
- an output filter comprising an input and an output, and having an output filter response that is based upon an inductance (L) and a capacitance (C) of the output filter, wherein the output filter response describes a relationship of signals applied to the input and signals resulting at the output;
- and
- a controller comprising a parameter setting circuit configured to:
- apply one or more pulses of known on-time and off-time to the voltage regulator system;
- take measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time;
- construct a model of the output filter response based on the measurements;
- and
- set one or more control loop parameters of the controller based on the model of the output filter response,
- wherein operation of the control loop is based upon the control loop parameters,
- wherein the controller is configured to implement a linear control loop and the control loop parameters are coefficients that define operation of the linear control loop,
- wherein the controller is configured to set the one or more control loop parameters by adjusting nominal control loop parameters based upon a difference between the constructed model of the output filter response and a nominal model of the output filter response.
A method of configuring a controller for a voltage regulator system comprising an output filter having an output filter response that is based upon an inductance (L) and a capacitance (C) of the output filter, the output filter response describing a relationship of an input to an output of the output filter, the method comprising:
- applying one or more pulses of known on-time and off-time to the voltage regulator system;
- taking measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time;
- constructing a model of the output filter response of the voltage regulator system based on the measurements;
- and
- setting one or more control loop parameters of the controller based on the model of the output filter response, wherein operation of the control loop is based upon the control loop parameters,
- wherein the controller includes a proportional-integral-derivative (PID) controller,
- wherein the one or more control loop parameters comprise at least one of a proportional coefficient, an integral coefficient, and a derivative coefficient of the PID controller,
- wherein the setting of the one or more control loop parameters comprises adjusting a nominal value of at least one of the proportional coefficient, the integral coefficient, and the derivative coefficient of the PID controller,
- wherein the adjusting is based upon a difference between the constructed model of the output filter response and a nominal model of the output filter response.
A voltage regulator system comprising:
- an output filter comprising an input and an output, and having an output filter response that is based upon an inductance (L) and a capacitance (C) of the output filter, wherein the output filter response describes a relationship of signals applied to the input and signals resulting at the output;
- and
- a controller comprising a parameter setting circuit configured to:
- apply one or more pulses of known on-time and off-time to the voltage regulator system;
- take measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time;
- construct a model of the output filter response based on the measurements;
- and
- set one or more control loop parameters of the controller based on the model of the output filter response,
- wherein operation of the control loop is based upon the control loop parameters,
- wherein the controller includes a proportional-integral-derivative (PID) controller,
- wherein the one or more control loop parameters comprise at least one of a proportional coefficient, an integral coefficient, and a derivative coefficient of the PID controller,
- wherein the controller is configured to set the one or more control loop parameters by adjusting a nominal value of at least one of the proportional coefficient, the integral coefficient, and the derivative coefficient of the PID controller, the adjusting being based upon a difference between the constructed model of the output filter response and a nominal model of the output filter response.
Dependencies are inferred from the claim text.