Detecting output diode conduction time for cable drop compensation of a power converter
AssigneePower Integrations, Inc.
InventorSTEFAN BÄURLE
Life of this patent
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Abstract
An example controller for a power converter to provide power to a load through a distribution network includes a control circuit and a cable drop compensator. The control circuit outputs a drive signal to control switching of a switch to regulate an output of the power converter in response to a feedback signal. The cable drop compensator is coupled to adjust the feedback signal in response to a conduction time of an output diode of the power converter to compensate for a distribution voltage dropped across the distribution network.
Claims19
A controller for a power converter to provide power to a load through a distribution network, the controller comprising:
- a control circuit that outputs a drive signal to control switching of a switch to regulate an output of the power converter in response to a feedback signal;
- and
- a cable drop compensator coupled to adjust the feedback signal in response to a conduction time of an output diode of the power converter to compensate for a distribution voltage dropped across the distribution network.
A power converter for providing power to a load through a distribution network, the power converter comprising:
- an energy transfer element coupled between an input and an output of the power converter;
- a switch coupled to the energy transfer element to control a transfer of energy from the input to the output;
- an controller coupled to control switching of the switch to regulate the output, the controller including:
- a control circuit that outputs a drive signal to control the switch in response to a feedback signal;
- and
- a cable drop compensator coupled to adjust the feedback signal in response to a conduction time of an output diode of the power converter to compensate for a distribution voltage dropped across the distribution network.
A method for a power converter to provide power to a load through a distribution network, the method comprising:
- receiving a feedback signal at a controller, the feedback signal representative of an output of the power converter;
- detecting a conduction time of an output diode of the power converter in response to the feedback signal;
- adjusting the feedback signal in response to the conduction time of the output diode to compensate for a distribution voltage dropped across the distribution network;
- and
- outputting a drive signal to control switching of a switch to regulate the output of the power converter in response to the feedback signal.
Dependencies are inferred from the claim text.