公开(公告)号：US09826608B2

公开(公告)日：2017-11-21

申请号：US14937038

申请日：2015-11-10

Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.

Inventor： Hyunchul Eum ,  Youngjong Kim ,  Kuo-Hsien Huang ,  Chih-Chun Chuang ,  Moon Ho Choi ,  Moon Sik Song

IPC: H05B33/08 ,  H05B39/04

CPC classification number: H05B39/044 ,  H05B33/0815 ,  H05B33/083 ,  H05B33/0845 ,  Y02B20/146

Abstract: Provided is a standby current supplier including a bleeding circuit electrically connected to a dimmer and through which a first current flowing to the dimmer flows when the dimmer is in an off state, and a first controller configured to detect a first voltage corresponding to an input voltage generated by the dimmer and control the bleeding circuit based on the first voltage when the first voltage is lower than a predetermined first level.

公开(公告)号：US09872349B2

公开(公告)日：2018-01-16

申请号：US14937179

申请日：2015-11-10

Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.

Inventor： Hyunchul Eum ,  Youngjong Kim ,  Kuo-Hsien Huang ,  Chih-Chun Chuang ,  Young Mo Yang ,  Young Je Lee ,  Moon Ho Choi ,  Moon Sik Song

IPC: H05B33/08

CPC classification number: H05B33/0818 ,  H05B33/0809 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0824 ,  H05B33/0845 ,  H05B33/0851 ,  Y02B20/343

Abstract: A phase-cut dimming control system according to the embodiment includes a phase angle detector configured to detect a phase angle of an input voltage generated by phase-cut dimming, a feedback signal generator configured to generate a first reference signal corresponding to the detected phase angle, and generate an initial feedback signal based on a detection signal corresponding to power supplied to a load and the first reference signal, a feedback signal modulator configured to modulate the initial feedback signal and generate a feedback signal, a power transmission controller configured to generate a control signal which controls power transmission according to the feedback signal, and a power transmission circuit configured to transmit power to the load according to the control signal.

公开(公告)号：US10412798B2

公开(公告)日：2019-09-10

申请号：US15835119

申请日：2017-12-07

Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.

Inventor： Hyunchul Eum ,  Youngjong Kim ,  Kuo-Hsien Huang ,  Chih-Chun Chuang ,  Young Mo Yang ,  Young Je Lee ,  Moon Ho Choi ,  Moon Sik Song

IPC: H05B33/08

Abstract: A phase-cut dimming control system according to the embodiment includes a phase angle detector configured to detect a phase angle of an input voltage generated by phase-cut dimming, a feedback signal generator configured to generate a first reference signal corresponding to the detected phase angle, and generate an initial feedback signal based on a detection signal corresponding to power supplied to a load and the first reference signal, a feedback signal modulator configured to modulate the initial feedback signal and generate a feedback signal, a power transmission controller configured to generate a control signal which controls power transmission according to the feedback signal, and a power transmission circuit configured to transmit power to the load according to the control signal.