Digital stress share method
AssigneePowervation Limited
InventorsKarl Rinne, Anthony Kelly, Eamon O'Malley
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Abstract
The Application is directed at arrangements at which switch mode power converters share a common load. More particularly, the application provides a masterless arrangement in which no single converter controls the operation of the other converters. This is achieved by an arrangement in which each converter attempts to share its current measurement with other converters through an arbitration scheme employed on a data line, with the winning converter providing a defacto current measurement; for example, a maximum or minimum, to the overall arrangement.
Claims16
A PWM controller for controlling a phase in a multi-phase environment, the PWM controller comprising:
- a control circuit for generating control signals for a switching circuit to provide an output voltage, the control circuit providing control signals to operate the switching circuit at a level of stress,
- a communications circuit configured to receive a maximum stress value and a minimum stress value on a single line,
- wherein the control circuit is adapted to adjust the level of stress toward an average of the maximum and minimum values.
Dependencies are inferred from the claim text.