公开(公告)号：US20180227992A1

公开(公告)日：2018-08-09

申请号：US15750172

申请日：2016-07-19

申请人： Aledia ,  Easii IC

发明人： Frédéric Mercier ,  David Gras ,  Nicolas Joubert

IPC分类号： H05B33/08

CPC分类号： H05B33/0815 ,  H05B33/0809 ,  H05B33/0824

摘要： An optoelectronic circuit for receiving a variable voltage containing alternating increasing and decreasing phases. The optoelectronic circuit includes assemblies of light-emitting diodes mounted in series; a current source connected to each assembly by a switch; for each switch, a first comparison module for comparing the current passing through the switch with a current threshold; a second comparison module for comparing a voltage representing the voltage at the terminals of the current source with a voltage threshold; and a control module connected to the first and second comparison modules and designed to control the opening and closing of the switches, during each increasing phase and each decreasing phase, according to signals supplied by the first and second comparison modules.

公开(公告)号：US10264633B2

公开(公告)日：2019-04-16

申请号：US15750172

申请日：2016-07-19

申请人： Aledia

发明人： Frédéric Mercier ,  David Gras ,  Nicolas Joubert

IPC分类号： H05B37/00 ,  H05B39/00 ,  H05B33/08

摘要： An optoelectronic circuit for receiving a variable voltage containing alternating increasing and decreasing phases. The optoelectronic circuit includes assemblies of light-emitting diodes mounted in series; a current source connected to each assembly by a switch; for each switch, a first comparison module for comparing the current passing through the switch with a current threshold; a second comparison module for comparing a voltage representing the voltage at the terminals of the current source with a voltage threshold; and a control module connected to the first and second comparison modules and designed to control the opening and closing of the switches, during each increasing phase and each decreasing phase, according to signals supplied by the first and second comparison modules.