公开(公告)号：US20230396142A1

公开(公告)日：2023-12-07

申请号：US18206280

申请日：2023-06-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minyong JUNG ,  Bongtae MIN ,  Hyoungseok OH ,  Wookwan LEE ,  Jinsoo LEE ,  Heungjun JEON

IPC: H02M1/00

CPC classification number: H02M1/0009 ,  H02M1/0025

Abstract: A device including a first switching converter configured to generate a negative supply voltage based on an input voltage; a load current sensor configured to sense a magnitude of a load current passing through a load to which the negative supply voltage is provided; and a first input current detector configured to detect a magnitude of a first input current provided to the first switching converter based on a duty cycle of the first switching converter and the magnitude of the load current.

公开(公告)号：US20240364220A1

公开(公告)日：2024-10-31

申请号：US18479741

申请日：2023-10-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minwoo KIM ,  Hyungju PARK ,  Woosuk CHOI ,  Wookwan LEE

IPC: H02M3/158 ,  H02M1/088 ,  H02M1/14 ,  H02M1/32

CPC classification number: H02M3/1582 ,  H02M1/088 ,  H02M1/14 ,  H02M1/32

Abstract: A power supply includes a first and second switching node, a first power switch and a second power switch, and a first bootstrap capacitor, the first bootstrap capacitor including one end connected to the first switching node, a third and a fourth power switch, and a second bootstrap capacitor, the second bootstrap capacitor including one end connected to the second switching node, and a charge sharing circuit storing a charge using a power supply voltage, providing a first charge sharing path for the first bootstrap capacitor from the stored charge based on a first voltage charged in the first bootstrap capacitor, and to provide a second charge sharing path for the second bootstrap capacitor from the stored charge based on a second voltage charged in the second bootstrap capacitor. The first charge sharing path and the second charge sharing path include a common charge sharing path and overlap each other.