Adaptive and efficient standby power supply scheme for next generation low power automotive systems

A method and system are provided for supplying power with an LDO linear voltage regulator (110) having an LDO power supply (114, 115) and a load switch (116) by connecting a power supply voltage (102, 104) to a main core (121) and a standby core (122) in a multi-core low power microcontroller (120)...

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Bibliographische Detailangaben
Hauptverfasser:	Pandya, Ruchika, El Sherif, Alaa Eldin Y, Baltz, Neal G, Jackoski, Keith, Wu, Bo
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CALCULATING COMPUTING CONTROL OR REGULATION THEREOF CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	A method and system are provided for supplying power with an LDO linear voltage regulator (110) having an LDO power supply (114, 115) and a load switch (116) by connecting a power supply voltage (102, 104) to a main core (121) and a standby core (122) in a multi-core low power microcontroller (120) during an active mode so that the standby core receives a first supply voltage that tracks the power supply voltage during the active mode, and upon detecting a standby mode for the multi-core low power microcontroller, disconnecting the power supply voltage from the standby core and connecting a low dropout (LDO) linear power supply voltage to the standby core during the standby mode so that the standby core receives the LDO linear power supply voltage as a second supply voltage during the standby mode.