Multi-channel LED driver arrangements

摘要

LED driver arrangements are disclosed comprising: an input; a plurality of switched mode boost converters, each connected to the input; and a plurality of outputs, each output having a different voltage and being for driving at least one LED string; wherein each of the plurality of switched mode boost converters is configurable to output of any one of the plurality of outputs. Controllers for such arrangements are also disclosed.

主权项

1. An LED driver circuit comprising:
an input; a plurality of peak current controllers; a plurality of outputs to output different voltages to drive different LED strings; a plurality of switched mode boost converters connected to the input and each of the plurality of switched mode boost converters is configurable to output to any of the plurality of outputs and at least two of the plurality of switched mode boost converters are configured to output to a same output in the plurality of outputs; and a switch unit coupled between the plurality of peak current controllers and the plurality of switched mode boost converters, wherein the switch unit is configurable to select a peak current controller from the plurality of peak current controllers to drive one of the plurality of switched mode boost converters.