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Single-Stage PFC Flyback Controller with Primary-Side Feedback, for LED Drivers Down to 1% Dimming
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The MP4059 is a single-stage PFC flyback controller for LED deep-dimming applications. The MP4059 can regulate constant current to an LED load over a wide 1% to 100% dimming range without flickering or shimmering. The MP4059 is a primary-side controller without any secondary-side feedback components or optocouplers, simplifying the LED driver design significantly. The MP4059 integrates power factor correction and works in valley switching mode to achieve high efficiency.
The MP4059 achieves ultra-low power consumption and can shut off the LED in standby mode, making it suitable for smart lighting applications.
The MP4059’s multiple protection features enhance system reliability and safety greatly. Protection features include over-voltage protection (OVP), short-circuit protection (SCP), primary-side over-current protection (OCP), brown-out protection, cycle-by-cycle current limit protection, under-voltage lockout (UVLO), and auto-restart over-temperature protection (OTP).
The MP4059 is available in a SOIC-8 package.
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Features & Benefits
- 1% to 100% PWM Dimming Range
- Ultra-Low Standby Loss, Typically Less than 50mW at 230VAC
- Universal Input
- Fast Start-Up
- No Flicker
- Low Audible Noise
- Valley Switching Mode for Good Efficiency
- Good PF (Typically >0.9)
- Primary-Side Over-Current Protection (OCP)
- Output Over-Voltage Protection (OVP)/Short-Circuit Protection (SCP)
- Under-Voltage Lockout (UVLO)
- Thermal Shutdown (160°C/100°C)
- Available in a SOIC-8 Package
EV4059-S-00A Evaluation Kit 90VAC to 265VAC, 21V/350mA Single-Stage Deep PWM Dimming Solution Evaluation Board
The EV4059-S-00A evaluation board is designed to demonstrate the capabilities of the MP4059. The MP4059 is a single power stage and PFC controller targeting at LED deep-dimming applications. It can regulate a constant current to an LED load over a 1% to 100% dimming range without flicker or shimmer. It is a primary-side controller without any secondary-side feedback components, and the optocoupler significantly simplifies LED driver design. The MP4059 integrates power factor correction and works in valley switching mode to achieve high efficiency.
The EV4059-S-00A adopts flyback topology to drive a 21V LED.