Patent ID: 9134739
Filing Date: 2015-09-15
Classification: G05F,H02M

Abstract:
1. A parametric adaptive controller for a power supply comprising a power stage, the parametric adaptive controller comprising: an analog compensator using feedback from an output of the power stage to provide at least one control output to the power stage to maintain the output of the power stage of the power supply at a desired level, wherein the analog compensator is implemented in a circuit and wherein at least one component of the circuit is adjustable to modify a transfer function of the controller in response to a tuning signal, and a tuner obtaining at least two signals from the analog compensator or an equivalent circuit of the analog compensator, with a first signal being a feedback error signal comprising a difference between the desired level and the output and a second signal being a signal sensitive to the variance of the feedback error signal, wherein the tuner is at least partially implemented in digital form and is adapted to continuously adjust the at least one circuit component in response to the monitoring of the obtained at least two signals to provide continuous adaptive control of the analog compensator, wherein two values are provided to the tuner derived from signals from the analog compensator and each of the two values identifies the sign of a signal derived from the analog compensator, and wherein one or more of the sign of the signal derived from the analog compensator includes no sign corresponding to a region of deadband about zero, or the tuner comprises a multiplier multiplying the sign values to provide a multiplier output.