US 11,870,337 B2
DC-dC converter with steady state current limitation
Lionel Cimaz, Pleumeleuc (FR)
Assigned to STMicroelectronics (Grand Ouest) SAS, Le Mans (FR)
Filed by STMicroelectronics (Grand Ouest) SAS, Le Mans (FR)
Filed on Feb. 24, 2022, as Appl. No. 17/679,960.
Application 17/679,960 is a continuation of application No. 16/854,483, filed on Apr. 21, 2020, granted, now 11,303,199.
Claims priority of application No. 1905194 (FR), filed on May 17, 2019.
Prior Publication US 2022/0393570 A1, Dec. 8, 2022
Int. Cl. H02M 1/32 (2007.01); H02M 3/02 (2006.01); H02M 1/00 (2006.01)
CPC H02M 1/32 (2013.01) [H02M 3/02 (2013.01); H02M 1/0009 (2021.05); H02M 1/0025 (2021.05)] 9 Claims
OG exemplary drawing
 
1. A current limiting circuit comprising:
a circuit configured to detect when an input or output current of a DC to DC converter exceeds or falls below a threshold; and
a controller configured to:
store a first value representative of a level of an output voltage of the DC to DC converter in response to the input or output current exceeding or falling below a first threshold;
store a second value representative of the level of the output voltage in response to the input or output current falling below a second threshold; and
modify a control signal based on the first and second values,
wherein the control signal is modified based on the first and second values so that the control signal brings the output voltage to an intermediate voltage level between the level of the output voltage represented by the first value and the level of the output voltage represented by the second value.