The NCL30188 is an Ac-Dc power factor corrected flyback controller targeting isolated and non−isolated buck-boost/SEPIC constant current LED drivers. The controller operates in a quasi−resonant mode to provide optimal efficiency. Thanks to a novel control method, the device is able to tightly regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This device is specifically intended for very compact, space efficient designs.
Features | | Benefits
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Constant Current Control with Primary Side Feedback
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No Optocoupler or secondary control circuitry required
Precise Current Regulation Accuracy
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No need for binning of LEDs or production trimming for accuracy
Power Factor Correction with low harmonic distortion
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Exceeds industry requirements for lighting
Line Feedforward for Enhanced Regulation Accuracy
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Supports universal mains applications
Wide Vcc operating range
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Simplifies support for range of LED forward voltages
User Programmable Thermal Foldback
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Protects LED Driver from overheating in severe situations