US 11,967,961 B2
Clock generation circuit and voltage generation circuit including the clock generation circuit
Hyun Chul Lee, Icheon-si (KR)
Assigned to SK hynix Inc., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on May 5, 2021, as Appl. No. 17/308,514.
Claims priority of application No. 10-2021-0006849 (KR), filed on Jan. 18, 2021.
Prior Publication US 2022/0231692 A1, Jul. 21, 2022
Int. Cl. H03L 7/089 (2006.01)
CPC H03L 7/0891 (2013.01) 5 Claims
OG exemplary drawing
 
1. A clock generation circuit comprising:
a control clock generation circuit comparing a voltage level of a reference voltage with each voltage level of a first feedback clock signal and a second feedback clock signal to generate a first control clock signal and a second control clock signal;
a first clock synchronization circuit making the first feedback clock signal and the second feedback clock signal transit in synchronization with the first control clock signal and the second control clock signal, wherein the first clock synchronization circuit is configured to generate each of the first feedback clock signal and the second feedback clock signal based on both of the first control clock signal and the second control clock signal; and
a second clock synchronization circuit generating a first phase clock signal and a second phase clock signal in synchronization with a time point when each of the first feedback clock signal and the second feedback clock signal transitions.