NCL30051: Offline Controller, PFC and Half Bridge Resonant Mode, for LED Lighting

Datasheet: PFC and Resonant Half Bridge Combo Controller for LED Lighting
Rev. 1 (134kB)
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The NCL30051 is a combination of a power factor correction (PFC) and half-bridge resonant controller optimized for off-line LED lighting applications. The device integrates all the features needed to implement a hightly efficient and small form factor LED driver. It contains a critical conduction mode (CrM) fixed on time boost controller and a half-bridge resonant controller with a built-in 600 V high side gate driver. The half-bridge stage operates at a fixed frequency - greatly simplifying the control implementation. The output (current or voltage)regulation can be achieved by adjusting the PFC stage output voltage based on a feedback signal generated external to the controller. This device includes an enable input on the FFC feedback pin, PFC open feedback protection, and PFC overvoltage and undervoltage detectors. Other features included in the NCL30051 are a 600 V startup circuit and an adjustable frequency oscillator with a divide by 2 circuit to assure a balanced duty ratio. Controller sequencing is built-in simplying the system design.
Features   Benefits
  • Voltage-mode CrM fixed on time PFC boost controller
  • Simple control scheme achieving high PF and low total harmonic distortion
  • PFC Open Feedback Loop Protection
  • Robust Fault Handling
  • Fixed Frequency Resonant Half-bridge Controller
  • High conversion efficiency with Zero Voltage Switching
  • 600 V High Side Gate Driver
  • Simplifies driving external MOSFETS
  • Up to 600 V Startup Circuit
  • Reduced parts count and simplified design
  • Half Bridge Disable input
  • Simplifies PWM dimming of the LEDs
  • PFC Bulk Undervoltage and Overvoltage Detectors
  • Robust Fault Handling
Applications   End Products
  • High Efficiency LED Drivers and Power Supplies
  • Lighting Electronic Control Gear
  • Light Ballasts
  • LED Wall Packs and Wall Washers
  • High Performance Outdoor LED Fixtures
  • Low Bay LED Luminaires
  • High Power LED Spot Lighting
Budgetary Price/Unit
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NCL30051DR2G Last Shipments
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NCL30051 SOIC-16 751B-05 1 260 Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
Case Outlines
NCL30051: Offline Controller, PFC and Half Bridge Resonant Mode, for LED Lighting
NCL30051: Offline Controller, PFC and Half Bridge Resonant Mode, for LED Lighting
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LED Lighting - Wall-Pack LED Lighting Application Featuring the NCL30051
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