Voltage regulator for contact-less electronic devices

摘要

A voltage regulator has an input terminal for receiving a supply voltage and an output terminal for providing a regulated voltage and a regulated current. Furthermore, the voltage regulator includes a regulator for generating the regulated voltage and the regulated current according to a regulation of the supply voltage. The regulator includes a plurality of regulation branches arranged between the input terminal and the output terminal, each one for providing an output voltage used for obtaining the regulated voltage and for providing an output current contributing to define the regulated current. The regulation branches are partitioned into a plurality of subsets each one including components adapted to operate within a corresponding maximum voltage different from the maximum voltage of the other subsets. In addition, the regulator includes a selector for selectively enabling the regulation branches according to an indicator of the supply voltage.

主权项

1. A voltage regulator comprising:
an input terminal configured to receive a supply voltage; an output terminal configured to provide a regulated voltage and a regulated current; a regulation circuit configured to generate the regulated voltage and the regulated current based upon a regulation of the supply voltage, and comprising
a plurality of regulation branches arranged between the input terminal and the output terminal each regulation branch for providing an output voltage used to obtain the regulated voltage and for providing an output current contributing to define the regulated current, the plurality of regulation branches being divided into a plurality of subsets each subset comprising components configured to operate within a corresponding maximum voltage different from a maximum voltage of other subsets, anda selection circuit configured to select at least one of the regulation branches based upon an indicator of the supply voltage and to enable each regulation branch when the indicator of the supply voltage falls within a corresponding range of values, wherein each range of values partially overlaps with an adjacent range of values.