METHOD AND APPARATUS FOR INTEGRATED CABLE DROP COMPENSATION OF A POWER CONVERTER
First Claim
1. An integrated circuit controller for a power converter to be coupled to a distribution network, comprising:
- a switching control circuit that outputs a drive signal to control switching of a switch to regulate an output of the power converter; and
a cable drop compensator that outputs a compensated reference voltage signal to the switching control circuit in response to a switching signal, wherein the switching signal is representative of the drive signal and wherein the compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network, wherein the switching of the switch is responsive to the compensated reference voltage signal and a feedback signal.
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Accused Products
Abstract
An integrated circuit controller for a power converter to be coupled to a distribution network is disclosed. An example integrated circuit controller according to aspects of the present invention includes a switching control circuit that outputs a drive signal to control switching of a switch to regulate an output of the power converter. The integrated circuit controller also includes a cable drop compensator that outputs a compensated reference voltage signal to the switching control circuit in response to a switching signal. The switching signal is responsive to the drive signal. The compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network. The switching of the switch is responsive to the compensated reference voltage signal and a feedback signal.
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Citations
25 Claims
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1. An integrated circuit controller for a power converter to be coupled to a distribution network, comprising:
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a switching control circuit that outputs a drive signal to control switching of a switch to regulate an output of the power converter; and a cable drop compensator that outputs a compensated reference voltage signal to the switching control circuit in response to a switching signal, wherein the switching signal is representative of the drive signal and wherein the compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network, wherein the switching of the switch is responsive to the compensated reference voltage signal and a feedback signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling a power converter, comprising:
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switching a switch to control a transfer of energy from an input of the power converter to an output of the power converter; generating a switching coefficient in response to the switching of the switch; generating a compensated reference voltage signal in response to a reference voltage and the switching coefficient to compensate for a distribution voltage across the distribution network coupled to the output of the power converter and a load voltage across a load coupled to the distribution network; and controlling the switching of the switch in response to the compensated reference voltage and a feedback signal. - View Dependent Claims (12, 13, 14, 15)
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16. A power converter, comprising:
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an energy transfer element having an input and an output; a sensor coupled to the energy transfer element to generate a feedback signal in response to an output of the power converter; a switching control circuit that outputs a drive signal to control switching of a switch coupled to the energy transfer element to regulate an output of a power converter; and a cable drop compensator that outputs a compensated reference voltage signal to the switching control circuit in response to a switching signal, wherein the switching signal is representative of the drive signal and wherein the compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network, wherein the switching of the switch is responsive to the compensated reference voltage signal and a feedback signal. - View Dependent Claims (17, 18, 19)
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20. An integrated circuit controller for a power converter to be coupled to a distribution network, comprising:
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a switching control circuit that outputs a drive signal to control switching of a switch to regulate an output of a power converter; a cable drop compensator that outputs a compensated reference voltage signal to the switching control circuit in response to a switching signal, wherein the switching signal is representative of the drive signal and wherein the compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network; and a current limiter coupled to output a current limit reached signal in response to a switch current to flow through the power switch, wherein the switching of the switch is responsive to the compensated reference voltage signal, a feedback signal and the current limit reached signal. - View Dependent Claims (21, 22)
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23. An integrated circuit controller for a power converter to be coupled to a distribution network, comprising:
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a switching control circuit that outputs a drive signal to control switching of a switch to regulate an output of a power converter; a cable drop compensator that outputs a compensated reference voltage signal to the switch control circuit in response to a switching signal, wherein the switching signal is representative of the drive signal and wherein the compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network; and an oscillator coupled to output a clock signal coupled to be received by the switching control circuit, wherein the switching of the switch is responsive to the compensated reference voltage signal, a feedback signal and the clock signal. - View Dependent Claims (24, 25)
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Specification