US 11,695,340 B2
Electronic device performing direct voltage to direct voltage conversion converting an input voltage to a fixed output voltage and operating method of electronic device
Kwang Chan Lee, Hwaseong-si (KR); Dongho Shin, Hwaseong-si (KR); and Chang Seok Chae, Seongnam-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 27, 2021, as Appl. No. 17/332,436.
Claims priority of application No. 10-2020-0125623 (KR), filed on Sep. 28, 2020.
Prior Publication US 2022/0103072 A1, Mar. 31, 2022
Int. Cl. H02M 3/158 (2006.01)
CPC H02M 3/1582 (2013.01) 19 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a direct voltage to direct voltage converter; and
a controller configured to:
receive first current information, second current information, an input voltage, and a feedback voltage from the direct voltage to direct voltage converter;
control the direct voltage to direct voltage converter based on the input voltage in one of a first mode, a second mode, or a third mode;
control the direct voltage to direct voltage converter based on the first current information and an output voltage such that buck conversion is performed in the first mode and the second mode; and
control the direct voltage to direct voltage converter based on the second current information and the output voltage such that boost conversion is performed in the second mode and the third mode, and
wherein the direct voltage to direct voltage converter includes:
an inductor connected between a first node and a second node;
a first switch connected between the first node and an input node;
a second switch connected between the first node and a ground node;
a third switch connected between the second node and the ground node;
a fourth switch connected between the second node and an output node;
a capacitor connected between the output node and the ground node; and
resistors connected in series between the output node and the ground node, and configured to generate the feedback voltage smaller than the output voltage output from the output node,
wherein the controller includes
a first conversion controller configured to output a first control signal which is set periodically and is reset when the feedback voltage is lower than a first target level; and
a second conversion controller configured to output a second control signal which is set periodically and is reset when the feedback voltage is lower than a second target level.