发明申请
US20120229037A1 HIGH EFFICIENCY, LOW ENERGY STORAGE DRIVER CIRCUIT FOR SOLID STATE LIGHT SOURCES 有权
高效率,低能耗存储驱动电路,用于固态光源

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.
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