Multisense-adaptive reading circuit, particularly for interleaved DC-DC converters and corresponding reading method

A multisense-adaptive reading circuit associated to a sense module, the reading circuit comprising:

• at least a first and a second current source coupled to a first and a second terminal of said module, said first and second terminals being coupled respectively to a first and a second resistive element;
• a tracker to track current information output from said first and second current sources;
• and
• a reading mode detector to detect a common mode voltage value and based on said value, to determine a reading mode being used among possible reading modes to self-adapt said reading circuit to said reading mode being used, by providing enabling signals to said first and second current sources and to said tracker,
• wherein said first and second current sources include at least a differential input stage coupled to said terminals, said first and second current sources being coupled to a voltage reference by a first and a second current generator;
• wherein said first and second current sources further include at least a differential stage being input-connected to said first and second current generators in correspondence with a first and second circuit node and output-connected to a bypass component, coupled in turn to an intermediate circuit node between said differential input stage and said first terminal, and
• wherein said differential input stage, said differential stage and said bypass component realize a negative feedback loop to force said first terminal to set at a same voltage set on said second terminal.

A multisense-adaptive reading circuit associated to a sense module, the reading circuit comprising:

• at least a first and a second current source coupled to a first and a second terminal of said module, said first and second terminals being coupled respectively to a first and a second resistive element;
• a tracker to track current information output from said first and second current sources;
• and
• a reading mode detector to detect a common mode voltage value and based on said value, to determine a reading mode being used among possible reading modes to self-adapt said reading circuit to said reading mode being used, by providing enabling signals to said first and second current sources and to said tracker,
• wherein said first and second current sources include at least a differential input stage coupled to said terminals, said first and second current sources being coupled to a voltage reference by a first and a second current generator, and
• wherein said second current source further includes a balancing network, said balancing network having a resistive element and a capacitor coupled in series and coupled between an output terminal and an input terminal of a differential stage.

A multisense-adaptive reading circuit associated to a sense module, the reading circuit comprising:

• at least a first and a second current source coupled to a first and a second terminal of said module, said first and second terminals being coupled respectively to a first and a second resistive element;
• a tracker to track current information output from said first and second current sources;
• and
• a reading mode detector to detect a common mode voltage value and based on said value, to determine a reading mode being used among possible reading modes to self-adapt said reading circuit to said reading mode being used, by providing enabling signals to said first and second current sources and to said tracker,
• wherein said first and second current sources include at least a differential input stage coupled to said terminals, said first and second current sources being coupled to a voltage reference by a first and a second current generator, and
• wherein said second current source further includes a current mirror stage coupled between a bypass component and said voltage reference.

A multisense-self-adaptive reading method of a current value flowing in a sense module, the reading method comprising:

• detecting a first value of a common mode voltage;
• comparing said detected first value with a first threshold value;
• if said detected first value is higher than said first threshold value, selecting a first reading mode;
• if said detected first value is lower than said first threshold value, selecting a second reading mode, wherein said second reading mode is carried on until an output voltage reaches a steady value corresponding to an end of a soft start;
• generating a control signal at the end of said soft start;
• measuring a second value of said common mode voltage;
• and
• comparing between said second value and said first threshold value and a second threshold value, said second threshold value being higher than said first threshold value.