LED lighting system and control method
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United States of America Patent
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Jun 25, 2024
Grant Date -
Mar 30, 2023
app pub date -
Feb 16, 2021
filing date -
Feb 16, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A system is created for an efficient dimming LED lighting system, and comprising a voltage source, an electronic switch controlled by a pulse width modulation, PWM, driving signal and an LED lighting module connected in series. The LED comprises an LED group and a constant current drive circuit to drive a constant current through the LED group. The voltage source and a bypass branch, which is connected in parallel with the electronic switch, is adapted such that when the electronic switch is open, a power delivered to the constant current drive circuit is sufficient to maintain operation of the constant current drive circuit, ensuring capability for a deep dimming.
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