Controller for a power supply with transition region regulation
First Claim
1. A method for regulating a flow of energy from an input of a power converter to an output of the power converter, comprising:
- receiving a first signal representative of an output voltage of the power converter;
receiving a second signal representative of a current of the power converter;
determining an output current of the power converter in response to at least one of the first and second signals;
switching a power switch of the power converter to regulate the output current of the power converter to a substantially constant output current value for a first range of power converter output voltages;
switching the power switch of the power converter to regulate an output power of the power converter to a substantially constant power value for a second range of power converter output voltages;
switching the power switch of the power converter to regulate the output voltage of the power converter at substantially a highest output voltage value of the second range of power converter output voltages for a range of power converter output current values;
adjusting the first range of power converter output voltages and the second range of power converter output voltages in response to an adjustment signal received at a terminal of a controller of the power converter.
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Accused Products
Abstract
A method for regulating a flow of energy from an input to an output of a power converter includes receiving a first signal representative of an output voltage, and receiving a second signal representative of a current of the power converter. An output current of the power converter is determined in response to at least one of the first and second signals. A power switch of the power converter is switched to regulate the output current of the power converter to a substantially constant output current value for a first range of power converter output voltages, to regulate an output power of the power converter to a substantially constant power value for a second range of power converter output voltages, and to regulate the output voltage of the power converter at substantially a highest output voltage value of the second range of power converter output voltages.
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Citations
16 Claims
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1. A method for regulating a flow of energy from an input of a power converter to an output of the power converter, comprising:
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receiving a first signal representative of an output voltage of the power converter; receiving a second signal representative of a current of the power converter; determining an output current of the power converter in response to at least one of the first and second signals; switching a power switch of the power converter to regulate the output current of the power converter to a substantially constant output current value for a first range of power converter output voltages; switching the power switch of the power converter to regulate an output power of the power converter to a substantially constant power value for a second range of power converter output voltages; switching the power switch of the power converter to regulate the output voltage of the power converter at substantially a highest output voltage value of the second range of power converter output voltages for a range of power converter output current values; adjusting the first range of power converter output voltages and the second range of power converter output voltages in response to an adjustment signal received at a terminal of a controller of the power converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A regulator circuit for use in a power converter, comprising:
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a voltage regulation circuit coupled to receive a first signal representative of an output voltage at an output of the power converter, wherein the voltage regulation circuit is coupled to generate a third regulation signal in response to the first signal; a current regulation circuit coupled to receive a second signal representative of a current of the power converter, wherein the current regulation circuit is coupled to determine an output current of the power converter in response to the second signal and generate a first regulation signal in response to the second signal; a transition region regulation circuit coupled to receive the first signal, the second signal, and an adjustment signal received at a terminal of the regulation circuit, wherein the transition region regulation circuit is coupled to generate a second regulation signal in response to the first signal, the second signal, and the adjustment signal; and a controller coupled to receive a feedback signal responsive to the first, second and third regulation signals, wherein the controller is coupled to generate a drive signal in response to the feedback signal to control a switching of a power switch of the power converter to regulate the output current of the power converter to a substantially constant output current value for a first range of power converter output voltages, wherein the switching of the power switch is further coupled to regulate an output power of the power converter to a substantially constant power value for a second range of power converter output voltages, wherein the controller is coupled to adjust the first range of power converter output voltages and the second range of power converter output voltages in response to the adjustment signal, and wherein the switching of the power switch is further coupled to regulate the output voltage of the power converter at substantially a highest output voltage value of the second range of power converter output voltages for a range of power converter output current values. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A regulator circuit for use in a power converter, comprising:
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a power switch; and a controller coupled to the power switch, and coupled to receive a first signal representative of an output voltage of the power converter, a second signal representative a current of the power converter, and an adjustment signal received at a terminal of the controller, wherein the regulator circuit is coupled to determine the output voltage and an output current of the power converter in response to at least the first and second signals and the adjustment signal, wherein the controller is coupled to control a switching of the power switch to regulate the output current of the power converter to a substantially constant output current value for a first range of power converter output voltages, wherein the switching of the power switch is further coupled to regulate an output power of the power converter to a substantially constant power value for a second range of power converter output voltages, wherein the controller is coupled to adjust the first range of power converter output voltages and the second range of power converter output voltages in response to the adjustment signal, and wherein the switching of the power switch is further coupled to regulate the output voltage of the power converter at substantially a highest output voltage value of the second range of power converter output voltages for a range of power converter output current values. - View Dependent Claims (16)
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Specification