US 12,294,235 B2
Electronic device for charging battery based on voltage of interface and method for controlling same
Hangseok Choi, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 20, 2021, as Appl. No. 17/555,852.
Application 17/555,852 is a continuation of application No. PCT/KR2021/019269, filed on Dec. 17, 2021.
Claims priority of application No. 10-2020-0182455 (KR), filed on Dec. 23, 2020.
Prior Publication US 2022/0200310 A1, Jun. 23, 2022
Int. Cl. H02J 7/00 (2006.01)
CPC H02J 7/00712 (2020.01) [H02J 7/00711 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an interface including contacts for charging an external electronic device;
a current reference control circuit; and
a charging current control circuit configured to control a magnitude of a charging current applied to the interface for charging the external electronic device based on a control signal resulting from a comparison between a charging current value applied to the interface and a first critical current value configured in the current reference control circuit,
wherein the current reference control circuit is configured to:
gradually decrease the first critical current value based on a voltage value applied to the interface reaching a first critical voltage value, and
maintain the first critical current value based on the voltage value applied to the interface being less than the first critical voltage value.