公开(公告)号：US10727733B2

公开(公告)日：2020-07-28

申请号：US15651448

申请日：2017-07-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ho Yeon Jeon ,  Hwa Yeal Yu ,  Seung Gyu Lee ,  Eun Suk Kim

IPC: G06F1/32 ,  G06F1/26 ,  H02M1/32 ,  G06F1/30 ,  G06F1/28 ,  H02M1/08 ,  H02M3/158 ,  H02M1/00

Abstract: A semiconductor device includes an inductor selectively connected to a power supply voltage and configured to store and release energy; a first transistor connected between the power supply voltage and the inductor and configured to provide the power supply voltage to the inductor; a second transistor connected to the first transistor in series, connected between the inductor and a ground voltage, and configured to provide the ground voltage to the inductor; a modulator configured to provide a modulation signal to a control circuit configured to control the first and second transistors by performing pulse width modulation (PWM); a current sensor configured to sense an amount of current passing through the first transistor and generate a first output signal based on the sensed amount of current; and a first overcurrent protection output generator configured to generate a second output signal based on the first output signal and a first reference signal.