US 11,703,901 B2
Device for providing a power supply
Jean Camiolo, St Egreve (FR); and Alexandre Pons, Vizille (FR)
Assigned to STMicroelectronics (Grenoble 2) SAS, Grenoble (FR); and STMicroelectronics (Alps) SAS, Grenoble (FR)
Filed by STMicroelectronics (Grenoble 2) SAS, Grenoble (FR); and STMicroelectronics (Alps) SAS, Grenoble (FR)
Filed on May 5, 2022, as Appl. No. 17/737,692.
Application 17/737,692 is a division of application No. 16/787,679, filed on Feb. 11, 2020, granted, now 11,353,905.
Claims priority of application No. 1901411 (FR), filed on Feb. 12, 2019.
Prior Publication US 2022/0261024 A1, Aug. 18, 2022
Int. Cl. G05F 1/575 (2006.01); G01R 19/165 (2006.01); G05F 3/18 (2006.01); G06F 1/26 (2006.01); H03F 3/45 (2006.01); H03K 3/0233 (2006.01); G05F 1/56 (2006.01)
CPC G05F 1/575 (2013.01) [G01R 19/16528 (2013.01); G05F 1/56 (2013.01); G05F 3/185 (2013.01); G06F 1/266 (2013.01); H03F 3/45076 (2013.01); H03K 3/02337 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A device, comprising:
a first terminal configured to receive a DC input voltage from a source circuit;
a switch selectively coupling the first terminal to a second terminal to pass the DC input voltage to a load circuit;
a low-dropout (LDO) linear voltage regulator configured to convert the DC input voltage to a DC supply voltage;
a control circuit powered by the DC supply voltage and configured to control actuation of the switch;
wherein the control circuit operates to negotiate with the load circuit to determine a negotiated level for the DC input voltage supplied by the source circuit and control operation of the source circuit to deliver the DC input voltage at the negotiated level; and
wherein the control circuit further operates to monitor an actual level of the DC input voltage and control the LDO linear voltage regulator such that the DC supply voltage does not increase above a threshold voltage level in response to increase in the actual level of the DC input voltage above the negotiated level.