Normalization circuit and related electronic system

An electronic system, comprising:

• a first electronic device configured to generate a first output signal representative of an output voltage or an output current of the first electronic device;
• a normalization circuit, configured to receive the first output signal of the first electronic device as an input signal, and to provide a normalized output signal as a result of a normalization of the input signal, the normalization circuit comprising:
• a first circuit path, configured to implement a high pass filtering of the input signal to provide a high-pass filtered component as a function of an AC component of the input signal;
• a second circuit path, configured to implement a low pass filtering of the input signal to provide a low-pass filtered component as a function of a DC-shift component of the input signal, representing DC-level changes;
• and
• a summing stage, coupled at outputs of the first and second circuit paths so as to provide at a respective output a sum signal as a function of a sum of the high-pass and low-pass filtered components;
• wherein the normalization circuit comprises a gain stage configured to set a common gain factor for the AC and DC-shift components of the input signal, so that the respective output of the summing stage provides the normalized output signal as the result of the normalization of the input signal;
• and
• a second electronic device configured to receive the normalized output signal provided by the normalization circuit.

An electronic system comprising:

• an electronic device comprising;
• a first switching transistor and a second switching transistor each having a respective terminal connected to a phase node of the electronic device;
• and
• an output stage connected downstream of the phase node and comprising:
• an inductor connected between the phase node and an output node;
• and
• a capacitor and a load connected between the output node and a supply line, wherein the capacitor has an equivalent series resistance value;
• and
• a comparison circuit connected to the electronic device and comprising:
• a first branch connected to the output node;
• a second branch connected downstream of the inductor and upstream of the capacitor;
• and
• a comparator connected downstream of the first and second branches and configured to compare first and second output signals of the first and second branches, respectively, wherein the first output signal is representative of a real voltage ripple at the output node, and the second output signal is representative of a theoretical voltage ripple at the output node.