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

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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
Parametrics
- SyncNo
- Open LED ProtectionYes
- PackageSOIC-8
- GradeCatalog
- TypeFlyback, Buck-boost
- Mps StatusNRFND
- mps_Status3
- Vfb (V)0.4
- Vac (max) (V)305
- Pout (max) (W)50
- Vac (min) (V)85
- Iq (mA)0.8
- Ishutdown (µA)0.22
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