Patent ID: 9515485
Filing Date: 2016-12-06
CPC Classification: H02J

Claim Text:
1. A lighting system comprising: one or more light emitting diodes; a switching power converter coupled to the one or more light emitting diodes; a controller, coupled to the switching power converter, configured to generate one or more control signals to control the switching power converter and light output from the one or more light emitting diodes; a startup capacitor coupled to the controller; a dropout immunity capacitor coupled between a first voltage source and the controller, wherein a capacitance of the dropout immunity capacitor is greater than a capacitance of the startup capacitor; wherein the startup capacitor is configured to provide sufficient energy to the controller to allow the controller to begin normal operation prior to the dropout immunity capacitor having sufficient energy to provide to the controller to allow the controller to operate normally; wherein the dropout immunity capacitor is configured to provide sufficient energy to the controller for a period of time when the first voltage source provides insufficient power to allow the controller to continue normal operation.