LED driver suitable for low-voltage operation and method therefor
Number of patents in Portfolio can not be more than 2000
United States of America
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May 14, 2024
Grant Date -
Jan 25, 2024
app pub date -
Jul 19, 2022
filing date -
Jul 19, 2022
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In one form, a switching controller includes a buck controller and a bypass circuit. The buck controller has an input for receiving a variable voltage, an output for providing a buck voltage by switching the variable voltage into an inductive output filter according to a switching signal having a variable duty cycle to regulate a current into a load. The bypass circuit is coupled to the buck controller for comparing the variable duty cycle of the switching signal to a threshold, for activating a bypass signal in response to the variable duty cycle exceeding the threshold, and for subsequently de-activating the bypass signal according to a predetermined algorithm.
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