VOLTAGE VARIATION SUPPRESSION USING PSRR BOOST IN LINEAR REGULATORS

Abstract: approaches disclosed herein provide for increasing the power supply rejection ratio (psrr) of a linear regulator to reduce noise in voltage from a power source. in at least one embodiment, at least a portion of a voltage to be output provided from the linear regulator is identified to include noise and is received to a correction circuit. the correction circuit processes the received noise to reverse the polarity and add gain. the processed noise is provided back to at least a portion of the voltage and can be used to suppress the noise of the voltage as the psrr of the linear regulator increases.

Inventor(s): Alajdin Rustemi

CPC Classification: G05F1/565 (SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES (regulating the timing or recurrence frequency of pulses in radar or radio navigation systems ; regulation of current or voltage, specially adapted for use in electronic time-pieces ; closed-loop systems for regulating non-electric variables by electric means ; regulating power supply of digital computers ; for obtaining desired operating characteristics of electromagnets with armatures ; regulating electric power distribution networks ; regulating the charging of batteries ; regulation of the output of static converters, e.g. switching regulators ; regulation of the output of electric generators , ; controlling transformers, reactors or choke coils ; regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers ; regulating tuning of resonant circuits ; regulating characteristics of transmission lines ; controlling electric light sources , , , , ; electric control of X-ray apparatus ))

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