US 12,136,880 B2
Power circuit and display device including the same
Bong Hwan Kim, Seoul (KR); and Yeong Seok Choe, Seoul (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Oct. 2, 2023, as Appl. No. 18/375,751.
Claims priority of application No. 10-2022-0148610 (KR), filed on Nov. 9, 2022.
Prior Publication US 2024/0154530 A1, May 9, 2024
Int. Cl. G09G 5/00 (2006.01); G09G 3/3233 (2016.01); H02M 1/00 (2006.01); H02M 3/158 (2006.01); G09G 3/36 (2006.01)
CPC H02M 3/158 (2013.01) [G09G 3/3233 (2013.01); H02M 1/0009 (2021.05); G09G 3/3648 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0289 (2013.01); G09G 2320/0223 (2013.01); G09G 2330/021 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power circuit, comprising:
an output terminal configured to supply an output voltage to a digital circuit;
a current sensing resistor connected to the output terminal;
a sensing part configured to receive a first reference voltage and voltages of both ends of the current sensing resistor and vary one of a feedback voltage and a second reference voltage; and
a voltage generation part configured to receive the feedback voltage and the second reference voltage and lowers the output voltage when a current flowing through the current sensing resistor decreases.