Improved TRIAC-Dimmable, Primary Side Control Offline LED Controller with Active PFC

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Product Description

The MP4030A is a TRIAC-dimmable, primary-side-control, offline LED lighting controller with active PFC. It can output an accurate LED current for an isolated lighting application with a single-stage converter. The proprietary real-current-control method can accurately control the LED current using primary-side information. It can significantly simplify LED lighting system design by eliminating secondary-side feedback components and the optocoupler. The MP4030A implements power-factor correction and works in boundary-conduction mode to reduce MOSFET switching losses. The MP4030A has an integrated charging circuit at the supply pin for fast start-up without a perceptible delay. The proprietary dimming control expands the TRIAC-based dimming range. The MP4030A features multiple protections including over-voltage protection (OVP), short-circuit protection (SCP), primary-side over-current protection (OCP), supply-pin under-voltage lockout (UVLO), and over temperature protection (OTP). All of which not only simplifies circuit design but also enhances system reliability and safety greatly. All fault protections feature auto-restart. The MP4030A is available in an 8-pin SOIC package.

Product 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
  • Over-Temperature Protection
  • Available in an 8-Pin SOIC Package


  • SyncNo
  • Open LED ProtectionYes
  • PackageSOIC-8
  • GradeCatalog
  • TypeBuck-Boost, Flyback
  • Vfb (V)0.4
  • Vac (max) (V)305
  • Pout (max) (W)50
  • Vac (min) (V)85
  • Iq (mA)0.8
  • Ishutdown (µA)0.22

185VAC~265VAC/50Hz, 30V/520mA Primary-side-control with Active PFC Off-line Dimmable LED Driver Evaluation Board

The EV4030A-S-01B Evaluation Board is designed to demonstrate the capabilities of MP4030A with ripple suppressor. The MP4030A is a primary-side-control offline LED lighting controller which can achieve high power factor and accurate current for Triac dimmable LED lighting application. It works in boundary conduction mode for reducing the MOSFET and Diode switching losses. The ripple suppressor can obviously reduce the output current ripple and escape the flicker or shimmer happened in deep dimming situation.

The EV4030A-S-01B is typically designed for driving a 15W Triac dimmable LED bulb with 30VTYP, 520mA LED load from 185VAC to 265VAC, 50Hz.

The EV4030A-S-01B has an excellent efficiency and meets IEC61547 surge immunity, IEC61000-3-2 Class C harmonics and EN55015 conducted EMI requirements. It has multi-protection function as over-voltage protection; primary side over current protection; short-circuit protection, cycle by cycle current limit, etc.

$25.00 + tax

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.