US 12,235,698 B2
Semiconductor device and power off method of a semiconductor device
Ho-Yeon Jeon, Hwaseong-si (KR); Dae Hwan Kim, Hwaseong-si (KR); and Young Hoon Lee, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 2, 2023, as Appl. No. 18/205,014.
Application 18/205,014 is a continuation of application No. 17/857,526, filed on Jul. 5, 2022, granted, now 11,709,537.
Application 17/857,526 is a continuation of application No. 16/933,270, filed on Jul. 20, 2020, granted, now 11,379,028, issued on Jul. 5, 2022.
Application 16/933,270 is a continuation of application No. 15/922,968, filed on Mar. 16, 2018, granted, now 10,725,516, issued on Jul. 28, 2020.
Claims priority of application No. 10-2017-0108758 (KR), filed on Aug. 28, 2017.
Prior Publication US 2023/0315179 A1, Oct. 5, 2023
Int. Cl. G06F 1/00 (2006.01); G06F 1/26 (2006.01); G06F 1/28 (2006.01); G11C 5/14 (2006.01); G06F 1/30 (2006.01); G06F 1/3203 (2019.01)
CPC G06F 1/28 (2013.01) [G06F 1/26 (2013.01); G11C 5/148 (2013.01); G06F 1/30 (2013.01); G06F 1/3203 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A power management integrated circuit comprising:
a first power source group including a plurality of first power sources, wherein the first power source group is configured to provide a first representative power supply voltage;
a second power source group including a plurality of second power sources, wherein the second power source group is configured to provide a second representative power supply voltage; and
a power sequence controller,
wherein the power sequence controller is configured to power off the first power source group and the second power source group, one group at a time, by:
controlling at least one of the plurality of first power sources to start to drop power supply level, to cause the first representative power supply voltage to decrease,
receiving the first representative power supply voltage, and
in response to the first representative power supply voltage decreasing to a first reference voltage, controlling at least one of the plurality of second power sources to start to drop power supply level.