Patent ID: 11910503
Assignee: SIGNIFY HOLDING B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An LED power supply configured to detect a characteristic of an input signal, comprising:
a Buck power factor control circuit being configured to receive the input signal, the input signal being referenced to a power ground, and to output an output signal, the output signal being referenced to an output ground, wherein the output ground is level shifted with respect to the power ground; and
a controller configured to output an LED drive signal, the controller referenced to the output ground, wherein the controller is configured to determine the characteristic of the input signal measuring a plurality of switching times of the Buck power factor control circuit, and determining conduction times and/or conduction frequencies of the Buck power factor control circuit, the plurality of switching times of the Buck power factor control circuit being determined by the controller according to a switching signal referenced to the output ground.