发明名称 |
Controlled power dissipation in a link path in a lighting system |
摘要 |
In at least one embodiment, a lighting system includes a link path power dissipation circuit to actively and selectively control power dissipation of excess energy in a switching power converter of the lighting system. The link path power dissipation circuit dissipates power through a link path of the switching power converter by controlling a link current of the switching power converter. In at least one embodiment, the controller controls the link path power dissipation circuit to limit the link current with a current source and dissipate power in the current source. In at least one embodiment, the link path power dissipation circuit includes a switch to limit the link current and dissipate power in the link path. |
申请公布号 |
US9491845(B2) |
申请公布日期 |
2016.11.08 |
申请号 |
US201113289967 |
申请日期 |
2011.11.04 |
申请人 |
KONINKLIJKE PHILIPS N.V. |
发明人 |
Melanson John L.;King Eric J. |
分类号 |
H05B37/02;H05K1/02;H05B33/08 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus comprising:
an active circuit to dissipate excess power in a link path of a switching power converter when the switching power converter receives more energy during a period of time than an amount of energy to be provided to a load coupled to the switching power converter plus inherent energy losses, wherein the excess power comprises power received by the switching power converter to prevent a premature disconnection of a phase-cut dimmer. |
地址 |
Eindhoven NL |