LIGHT-EMITTING ELEMENT DRIVE SYSTEM AND LIGHT-EMITTING ELEMENT DRIVE DEVICE

WIPO Patent Application WO/2023/238549

A1

Provided is a light-emitting element drive system (50) comprising: a reader light-emitting element drive device (10) having a DC/DC controller (1) configured to be able to drive light-emitting elements (A1 to A24) and be able to control an output stage (30) capable of outputting an output voltage (Vout); and a plurality of follower light-emitting element drive devices (20) configured to be able to drive light-emitting elements to which the output voltage is applied, the follower light-emitting element drive device having at least one signal output terminal (DCDCPWMOUT terminal, PRESIGOUT terminal) capable of outputting an operation information signal regarding driving of the light-emitting elements, a plurality of the signal output terminals being connected to the same node (N1, N2), and the same node being connected to the signal input terminal (DCDCPWMIN terminal, PRESIGIN terminal) of the reader light-emitting element drive device.

WO/2022/233778	ELECTRIC CIRCUIT, METHOD FOR OPERATING AT LEAST ONE LIGHT SOURCE, CONTROLLER, AND LIGHTING DEVICE COMPRISING SUCH A CIRCUIT
JP2022541259	Improved balance control for 2-channel CCT dimming
JP2022041033	LUMINAIRE

TAKAHASHI TORU (JP)

PCT/JP2023/016672

December 14, 2023

April 27, 2023

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ROHM CO LTD (JP)

H05B45/375; H01L33/00; H02M3/155; H05B45/325; H05B45/345; H05B45/38; H05B47/105; H05B47/14; H05B47/16

US20090187925A1	2009-07-23
JP2010040641A	2010-02-18

SANO PATENT OFFICE (JP)

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