Onsemi NCL30488 | Demoboard NCL30488 20 W SSR EVB AND90015

Description

The NCL30488 [1] is a power factor corrected controller with primary side constant voltage (CV) and constant current (CC) control suitable for flyback, buck−boost or SEPIC converters. The NCL30488 is housed in an SOIC 8 package and targets high−performance LED drivers. These controller integrate a proprietary circuit for power factor correction and constant current control allowing to achieve a power factor above 0.9 and total harmonic distortion below 10% for universal mains input. This controller is normally primary side regulated, but the version (TBD) is compatible with secondary side regulation. In this version, the COMP pin features a pullup resistor to the internal reference voltage rail and allows directly connecting an optocoupler collector to the pin. The current−mode, quasi−resonant architecture of this controller optimizes the efficiency by turning on the MOSFET when the drain−source voltage is minimal (valley). The valley lockout and frequency foldback circuitry maintain high−efficiency performance in in light load during constant−voltage regulation.

Features

• High Voltage Startup
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Feedback
• CC / CV Accurate Control Vin up to 320 V rms
• Tight LED Constant Current Regulation of ±2% Typical
• Digital Power Factor Correction
• Cycle by Cycle Peak Current Limit
• Wide Operating VCC Range
• −40 to + 125°C
• Robust Protection Features
• Brown−Out
• OVP on VCC
• Constant Voltage / LED Open Circuit Protection
• Winding Short Circuit Protection
• Secondary Diode Short Protection
• Output Short Circuit Protection
• Thermal Shutdown
• Line over Voltage Protection
• This is a Pb−Free Device

Typical applications

• Integral LED Bulbs, LED Power Driver Supplies, LED Light Engines

More information

• Datasheet
• IC product information