深圳市中立信电子科技有限公司

NCL30288BSNT1G

LED照明驱动器 HIGH PF PWM PRIMARY SIDE

Power Factor Corrected  Quasi-Resonant Primary  Side Current-Mode  Controller for LED Lighting

The NCL30288BSNT1G NCL30288 is a compact driver for power−factor corrected flyback and non−isolated buck−boost and SEPIC converters. The controller operates in a quasi−resonant mode to provide optimal efficiency, and embeds a proprietary control method which allows the LED current to be tightly regulated from the primary side, thus eliminating the need for a secondary−side feedback circuitry and for an optocoupler.

NCL30288BSNT1G Features

• Quasi−resonant Peak Current−mode Control Operation

• Constant Current Control with Primary Side Feedback

• Tight LED Constant Current Regulation of ±2% typical

• Near−Unity Power Factor (>0.95 typically)

• Optimized for Line Wide−range Applications

• Line Feedforward for Enhanced Regulation Accuracy

• Low Start−up Current (10 A typ.)

• Wide VCC Range

• 300 mA / 500 mA Totem Pole Driver with 12 V Gate Clamp

• Robust Protection Features

♦ OVP on VCC

♦ Programmable Over Voltage / LED Open Circuit Protection

♦ Cycle by cycle peak current limit

♦ Winding Short Circuit Protection

♦ Secondary Diode Short Protection

♦ Output Short Circuit Protection

♦ Thermal Shutdown

♦ VCC Undervoltage Lockout

♦ Brown−Out Detection

• Pb−Free, Halide−Free MSL1 Product

NCL30288BSNT1G Typical Application

• Integral LED Bulbs and Tubes

• LED Light Engines

• LED Drivers / Power Supplies