公开(公告)号：US20230141723A1

公开(公告)日：2023-05-11

申请号：US17973526

申请日：2022-10-25

申请人： RICHTEK TECHNOLOGY CORP.

发明人： Ching-Yi Chen ,  Hsing-Shen Huang

IPC分类号： H05B45/325 ,  H05B45/10

CPC分类号： H05B45/325 ,  H05B45/10

摘要： A dimmer circuit includes a light emitting module, a first current source, a digital-to-analog converter, a switch, a second current source and a pulse width modulation generator. The light emitting module is for emitting light according to a driving current. The first current source includes a first terminal coupled to a second terminal of the light emitting module. The digital-to-analog converter is for generating a DC voltage according to a DC dimming code signal to control the first current source. The switch includes a first terminal coupled to a second terminal of the light emitting module. The second current source includes a first terminal coupled to a second terminal of the switch. The PWM generator is for generating a PWM voltage according to the PWM dimming code signal to control the second current source.

公开(公告)号：US20240311327A1

公开(公告)日：2024-09-19

申请号：US18426261

申请日：2024-01-29

申请人： RICHTEK TECHNOLOGY CORP.

发明人： Ching-Yi Chen ,  Hsing-Shen Huang ,  Bo-Jyun Huang

IPC分类号： G06F13/42 ,  G06F1/10 ,  G06F13/40

CPC分类号： G06F13/4256 ,  G06F1/10 ,  G06F13/4072

摘要： A bus configuration system includes a plurality of driver integrated circuits (ICs) coupled sequentially on a daisy chain, and a bus controller coupled to the plurality of driver ICs. Each driver IC includes a plurality of ports. The bus controller is used to generate a port definition code for configuring each port of the each driver IC. The bus controller includes a clock output port used to output a clock signal and a data output port used to output a data signal. When a port of the plurality of ports detects the clock signal, the port is configured as a clock input port.

公开(公告)号：US11792900B2

公开(公告)日：2023-10-17

申请号：US17973526

申请日：2022-10-25

申请人： RICHTEK TECHNOLOGY CORP.

发明人： Ching-Yi Chen ,  Hsing-Shen Huang

IPC分类号： H05B45/325 ,  H05B45/10

CPC分类号： H05B45/325 ,  H05B45/10

摘要： A dimmer circuit includes a light emitting module, a first current source, a digital-to-analog converter, a switch, a second current source and a pulse width modulation generator. The light emitting module is for emitting light according to a driving current. The first current source includes a first terminal coupled to a second terminal of the light emitting module. The digital-to-analog converter is for generating a DC voltage according to a DC dimming code signal to control the first current source. The switch includes a first terminal coupled to a second terminal of the light emitting module. The second current source includes a first terminal coupled to a second terminal of the switch. The PWM generator is for generating a PWM voltage according to the PWM dimming code signal to control the second current source.