Monolithic Power Systems MP4032-1

Description

The MP4032-1 is a TRIAC-dimmable, primaryside-controlled, offline, LED lighting driver with an integrated 500V MOSFET. It can achieve a high power factor and accurate LED current control for lighting applications in a single-stage converter. The proprietary real-current control can accurately control the secondary-side LED current using primary-side information. Itsimplifies LED lighting systems and increases efficiency by removing the secondary feedback components and the current-sensing resistor.

The MP4032-1 has a power-factor-correction function and works in boundary-conduction mode that reduces power losses. The DRAIN pin can supply current to the internal charging circuit for start-up without a perceptible delay. The proprietary dimming control extends the TRIAC-based dimming range.

The multiple protections greatly enhance system reliability and safety. These protections include VCC under-voltage lockout, LED overvoltage and over-current protections, shortcircuit protection, and over-temperatureprotection.

The MP4032-1 is available in an SOIC8-7A package.

Features

• Real Current Control without Secondary Feedback Circuit
• Internal MOSFET with 500V High Voltage Rating
• Less than 6W Output Power
• Internal Charging Circuit for Fast Start-Up
• Accurate Line Regulation
• Flicker-Free, Phase-Controlled TRIAC Dimming with Extended Dimming Range
• High Power Factor
• Boundary-Conduction Mode
• VCC UVLO
• Cycle-by-Cycle Current Limiting
• Over-Voltage Protection
• Short-Circuit Protection
• Over-Temperature Protection
• Available in SOIC8-7A Package

Remarks

• L1=L2=4.7mH,L3=2.2mH,L4=1000mH and Lp=2.596mH are used Refer Page no-18,Figure-12

Typical applications

• Solid-State Lighting
• Industrial and Commercial Lighting
• Residential Lighting

More information

• Datasheet
• IC product information