公开(公告)号：US20240380323A1

公开(公告)日：2024-11-14

申请号：US18540325

申请日：2023-12-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyungju PARK ,  Minwoo KIM ,  Minyong JUNG

IPC: H02M3/158

Abstract: Disclosed is a DC-DC converter which includes a voltage converter configured to receive an input voltage through an input node, to convert the input voltage into an output voltage, and to output the output voltage to an output node, and a controller configured to select at least one conversion manner among a plurality of conversion manners based on a first ratio of a charging period of one cycle, to charge internal elements in the at least one conversion manner during the charging period of the one cycle, and to control the voltage converter to discharge the internal elements in the at least one conversion manner during a discharging period of the one cycle.

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.