MP4030A Primary-Side-Control Offline LED Controller SOIC

MP4030A Primary-Side-Control Offline LED Controller SOIC

The MP4030A is a TRIAC-dimmable, primary- side-control, offline LED lighting controller with active PFC.

Key Specifications

Features

• Primary-Side-Control without Requiring a Secondary-Side Feedback Circuit
• Internal Charging Circuit at the Supply Pin for Fast Start-Up
• Accurate Line & Load Regulation
• High Power Factor and Improved THD
• Flicker-Free, Phase-Controlled TRIAC Dimming with Expanded Dimming Range 1% to 100% Full Range
• Operates in Boundary Conduction Mode
• Cycle-by-Cycle Current Limit
• Primary-Side, Over-Current Protection
• Over-Voltage Protection
• Short-Circuit Protection

Typical Application Circuit

Applications

• Solid-State Lighting, including:
• Industrial and Commercial Lighting

Design Notes

• Channel-to-channel current matching sets backlight uniformity; check the matching spec at the current you will actually run.
• In boost topologies the OVP threshold must clear the worst-case forward voltage of the longest string, including temperature and binning spread.
• Keep PWM dimming above 200 Hz to stay clear of visible flicker, and away from the audio band if the product has a speaker.
• Size the inductor and output capacitor for the string current ripple, not the total LED current.

Common Questions