NCL30051
NCL30051 is PFC and Half-Bridge Resonant Combo Controller manufactured by onsemi.
features needed to implement a highly efficient and small form factor LED Driver/Power Supply. It contains a critical conduction mode (Cr M) power factor correction (PFC) boost controller and a half- bridge resonant controller with a built- in 600 V driver. The half- bridge stage operates at a fixed frequency, greatly simplifying the control implementations. The output (current or voltage) regulation is achieved by adjusting the PFC stage output voltage
- based on a control signal generated external to the NCL30051.
This device includes an enable input on the PFC feedback pin, open feedback loop 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 true symmetric duty ratio. The controllers are properly sequenced, simplifying system design.
Features
- Voltage Mode Cr M Power Factor Correction Controller
- PFC Open Feedback Loop Protection
- PFC Undervoltage Detector
- PFC Overvoltage Detector
- Half- Bridge Stage with 600 V High Side Gate Drive
- State Machine Ensures Proper Turn- on and Turn- off of
Half- Bridge Stage
- Controllers are Properly Sequenced for Fault Free Operation
- Non- Latching Fault Management
- Internal 600 V Startup Circuit
- Wide Temperature Range of
- 40°C to +125°C
- This is a Pb- Free Device
Typical Applications
- High Efficiency LED Drivers and Power Supplies
- Electronic Control Gear
- Lighting Ballasts
.onsemi.
MARKING DIAGRAM
SOIC- 16 D SUFFIX CASE 751B
NCL30051G AWLYWW
= Assembly Location
WL = Wafer Lot
= Year
WW = Work Week
= Pb- Free Package
PIN CONNECTIONS
HBoost
HDRVhi...
