A METHOD FOR OPTIMIZED MANAGEMENT OF THE POWER IN AN ELECTRONIC CIRCUIT COMPRISING A PROCESSING SYSTEM AND A FURTHER CIRCUIT, CORRESPONDING CIRCUIT AND APPARATUS

摘要

A method for managing the power supply in an electronic circuit comprising a processing system (11; 11'), in particular a general purpose microcontroller or a System-on-Chip or a subsystem thereof, with a radio-frequency embedded circuit (12),said processing system (11; 11') comprisingat least a processing core (30, V12I, VI2O) and a first power regulation module (111') supplying a first regulated voltage (V12) to said processing core (30),said radio frequency embedded circuit (12) comprising a second power regulation module (121) supplying a second regulated voltage (Vreg) to circuits (122) of the radio-frequency embedded circuit including a radio frequency transceiving portion (124), said second power regulation module (122) comprising a switched-mode power supply (1211) and generating a second regulated voltage (Vreg),said method comprising coupling said second regulated voltage (Vreg) as voltage input of said first power regulation module (1111), said first power regulation module (1111) which generates as an output a respective first regulated voltage (Vregm) for said processing core (30),controlling said second power regulation module (121) to operate according to a plurality of operation modes (LP1, LP2, A1, A2, LP3, LP4) includingone or more sleep modes (LP1, LP2) in which both the DC-DC converter (1211) and the second linear regulator (121) are off andone or more active modes (A1, A2) in which both the DC-DC converter (1211) and the second linear regulator (121) are on,wherein said second power regulation module (122) comprises a second linear regulator (1212) andsaid plurality of modes (LP1, LP2, A1, A2, LP3, LP4) includesa first further sleep mode (LP3) in which the switched-mode power supply (1211) is off and the second linear regulator (1212) is on anda second further sleep mode in which the switched-mode power supply (1211) is on and the second linear regulator (1212) is off.