Patent ID: 9660538
Date: 2017-05-23
CPC Classifications: H02M

Claim:
1. A multi-loop switch-mode DC/DC power flyback converter for simultaneously regulating multiple outputs, in steady-state, with switched digital filters comprising: a time-shared, common power transformer and drive circuit receiving a source of DC power, and providing a regulated power output to both a first output load and a second output load; a first feedback loop associated with the first output load for regulating said power supplied to said first output load, and a second feedback loop associated with the second output load for regulating said power supplied to said second output load; a first digital filter for processing a first feedback signal corresponding to the first output load in said first feedback loop and generating a first error signal; a second digital filter for processing a second feedback signal corresponding to the second output load in said second feedback loop and generating a second error signal, said first and second digital filters being derived from a respective corresponding analog transfer gain function, wherein said first and second digital filters for the respective first and second feedback loop are a direct form implementation of a discrete digital filter transfer function having one of: a quadratic or cubic denominator; a switching device for distributing the first error signal generated from the first digital filter as an output at first time intervals, and distributing said second error signal generated from the second digital filter as an output at second time intervals; said time-shared, common power transformer and drive circuit responsive to said first output error signal for simultaneously regulating said first output load in steady-state at said first time intervals, and responsive to said second output error signal for simultaneously regulating said second output load in steady-state at said second time intervals, wherein each said first and second digital filter are individually configured to perform its own regulation, and each said first digital filter and second digital filter of the discrete digital filter transfer function having polynomial coefficients that are configured to be instantly switched among quadratic, cubic, or higher order polynomial forms.