发明名称 |
Powerless Bleeder |
摘要 |
A power efficient method and system for ensuring a reliable operation of dimmers in conjunction with solid state lighting devices such as LED or OLED assemblies is presented. A controller for a driver circuit of a solid state light bulb assembly is described. The solid state light bulb assembly comprises a solid state light source. The driver circuit comprises a switched-mode power converter. The controller is configured to receive an input voltage indicative of a mains electricity supply submitted to a dimmer; to determine that the dimmer is in an off-phase, based on the input voltage; and, if it is determined that the dimmer is in an off-phase, to generate a control signal for the switched-mode power converter to operate the switched-mode power converter in a switched mode for discharging one or more capacitances at an input of the switched-mode power converter. |
申请公布号 |
US2015237695(A1) |
申请公布日期 |
2015.08.20 |
申请号 |
US201514706140 |
申请日期 |
2015.05.07 |
申请人 |
Dialog Semiconductor GmbH |
发明人 |
Jelaca Nebojsa |
分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
代理机构 |
|
代理人 |
|
主权项 |
1. A controller for a driver circuit of a solid state light bulb assembly; wherein the solid state light bulb assembly comprises a solid state light source; wherein the driver circuit comprises a switched-mode power converter; wherein the controller is configured to
determine that a dimmer of a mains electricity supply of the solid state light bulb assembly is in an off-phase; if it is determined that the dimmer is in an off-phase, generate a control signal for the switched-mode power converter to operate the switched-mode power converter in a switched mode for discharging one or more capacitances at an input of the switched-mode power converter. |
地址 |
Kirchheim/Teck-Nabern DE |