US 11,928,539 B2
Mode-changeable power supply circuit and smart card including the same
Kyeongdo Kim, Seoul (KR); Sanghyo Lee, Incheon (KR); Seungwon Lee, Yongin-si (KR); and Jongpil Cho, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd., (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Feb. 17, 2023, as Appl. No. 18/111,014.
Application 18/111,014 is a continuation of application No. 17/366,908, filed on Jul. 2, 2021, granted, now 11,586,873.
Application 17/366,908 is a continuation of application No. 16/233,886, filed on Dec. 27, 2018, granted, now 11,055,598, issued on Jul. 6, 2021.
Claims priority of application No. 10-2018-0002883 (KR), filed on Jan. 9, 2018.
Prior Publication US 2023/0206020 A1, Jun. 29, 2023
Int. Cl. G06K 19/077 (2006.01); G06K 19/07 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01); H02M 3/156 (2006.01); H02M 7/06 (2006.01)
CPC G06K 19/07773 (2013.01) [G06K 19/0715 (2013.01); H02M 1/08 (2013.01); H02M 1/0045 (2021.05); H02M 3/156 (2013.01); H02M 7/06 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a rectifier configured to output a rectified voltage to a first node by rectifying an electrical signal which is generated based on a radio frequency signal;
a voltage regulator configured to stabilize a level of the rectified voltage, generate an internal voltage, and operate in a first operation mode and a second operation mode, the first operation mode maintaining the rectified voltage, and the second operation mode stabilizing the internal voltage;
a regulator converter including a first switch configured to provide a voltage based on the rectified voltage to the voltage regulator; and
a clamp circuit configured to connect the first node to a ground according to whether the first switch is turned-on or turned-off.