Onsemi NCL30030

Description

This combination IC integrates power factor correction (PFC) and quasi−resonant flyback functionality necessary to implement a compact and highly efficient LED driver for high performance LED lighting applications.

The PFC stage utilizes a proprietary multiplier architecture to achieve low harmonic distortion and near−unity power factor while operating in a Critical Conduction Mode (CrM). The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components.

The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while consuming very low standby power consumption.

Features

• Wide VCC Range from 9 V to 30 V with Built−in OvervoltageProtection
• High−Voltage Startup Circuit
• Integrated High−Voltage Brown−Out Detector
• Fault Input for Severe Fault Conditions, NTC Compatible (Latch and Auto−Recovery Options)
• 0.5 A / 0.8 A Source / Sink Gate Drivers
• Internal Temperature Shutdown

Typical applications

• Commercial LED ballasts
• LED Electronic Control Gear
• High Power LED Drivers
• Adapters
• LED Signage Power Supplies
• Open Frame Power Supplies

More information

• Datasheet
• IC product information