US 12,436,550 B2
Voltage regulator with control of the feedback voltage divider
Jung Han Lee, Icheon-si (KR)
Assigned to SK hynix Inc., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on Jun. 14, 2023, as Appl. No. 18/334,983.
Claims priority of application No. 10-2022-0162145 (KR), filed on Nov. 29, 2022.
Prior Publication US 2024/0176372 A1, May 30, 2024
Int. Cl. G05F 1/46 (2006.01); G05F 1/575 (2006.01)
CPC G05F 1/462 (2013.01) [G05F 1/575 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A voltage regulator comprising:
a voltage generator configured to receive a reference voltage and a feedback voltage and configured to generate an output voltage corresponding to the feedback voltage;
a voltage divider configured to divide the output voltage to generate the feedback voltage; and
a controller configured to control a voltage division value of the voltage divider in response to a program enable signal and a charge-pump enable signal during an activation period of an enable signal
wherein:
during a predetermined period after activating the program enable signal, a resistance value of the voltage divider is adjusted in response to an output of the controller, and the feedback voltage is changed in response to the adjusted resistance value so that the output voltage increases to a predetermined target level or higher.