The NCL30088 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
● Latched and Auto-recoverable versions
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● Flexiblity for fault handling
● Secondary Diode Short Protection
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● Avoids overheating in fault condition
● VCC Undervoltage and overvoltage protection
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● Robust fault handling
● Open and Shorted LED Protection
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● Robust fault handling of common LED system faults
● Wide Temperature range of -40 to 125 °C
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● Suports outdoor and high temperature environments
● Low Startup Current (13 µA typical)
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