发明名称 |
HIGH EFFICIENCY, LOW ENERGY STORAGE DRIVER CIRCUIT FOR SOLID STATE LIGHT SOURCES |
摘要 |
A device, system and method to drive light emitting diodes (LEDs) are disclosed. An exemplary system may include a string of LEDs coupled across a voltage source configured to provide an input voltage. The string of LEDs may include a plurality of separate groups of LEDs and a plurality of switch circuits. Each of the switch circuits may include a switch coupled in parallel with an associated one of the groups of LEDs to control current flow through the associated group of LEDs in response to a control signal from a controller circuit. A switch protection circuit may be associated with at least one of the switches. A steering circuit may also be coupled in series and associated with each of the groups of LEDs. |
申请公布号 |
EP2700284(A1) |
申请公布日期 |
2014.02.26 |
申请号 |
EP20120712174 |
申请日期 |
2012.03.06 |
申请人 |
OSRAM SYLVANIA INC. |
发明人 |
MOSKOWITZ, PHILIP, E.;MOSKOWITZ, WARREN, P. |
分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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