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© Semiconductor Components Industries, LLC, 2014
July, 2014 − Rev. 0
1 Publication Order Number:
NCL30030/D
NCL30030
Combination Power Factor
Correction and
Quasi-Resonant Flyback
Controllers for LED Lighting
This combination IC integrates power factor correction (PFC) and
quasi−resonant flyback functionality necessary to implement a
compact and highly efficient LED driver for high performance LED
lighting applications.
The PFC stage utilizes a proprietary multiplier architecture to
achieve low harmonic distortion and near−unity power factor while
operating in a Critical Conduction Mode (CrM). The circuit
incorporates all the features necessary for building a robust and
compact PFC stage while minimizing the number of external
components.
The quasi−resonant current−mode flyback stage features a
proprietary valley−lockout circuitry, ensuring stable valley switching.
This system works down to the 4
th
valley and toggles to a frequency
foldback mode with a minimum frequency clamp beyond the 4
th
valley to eliminate audible noise. Skip mode operation allows
excellent efficiency in light load conditions while consuming very low
standby power consumption.
Common General Features
• Wide V
CC
Range from 9 V to 30 V with Built−in Overvoltage
Protection
• High−Voltage Startup Circuit
• Integrated High−Voltage Brown−Out Detector
• Fault Input for Severe Fault Conditions, NTC Compatible (Latch and
Auto−Recovery Options)
• 0.5 A / 0.8 A Source / Sink Gate Drivers
• Internal Temperature Shutdown
PFC Controller Features
• Critical Conduction Mode with a Multiplier
• Accurate Overvoltage Protection
• Optional Bi−Level Line−Dependent Output Voltage
(2:1 / 1.77:1 Versions)
• Fast Line / Load Transient Compensation
• Boost Diode Short−Circuit Protection
• Feed−Forward for Improved Operation across Line and
Load
• Adjustable PFC Disable Threshold Based on Output
Power
QR Flyback Controller Features
• Valley Switching Operation with Valley−Lockout for
Noise−Free Operation
• Frequency Foldback with Minimum Frequency Clamp
for Highest Performance in Standby Mode
• Minimum Frequency Clamp Eliminates Audible Noise
• Timer−Based Overload Protection (Latched or
Auto−Recovery options)
• Adjustable Overpower Protection
• Winding and Output Diode Short−Circuit Protection
• 4 ms Soft−Start Timer
• These are Pb−Free Devices
Typical Applications
• High Power LED Drivers
• Commercial LED ballasts
• LED Signage Power Supplies
• Adapters
• Open Frame Power Supplies
• LED Electronic Control Gear
MARKING DIAGRAM
http://onsemi.com
See detailed ordering and shipping information on page 31 o
f
this data sheet.
ORDERING INFORMATION
SOIC−16 NB MISSING PIN 2
CASE 751DT
NCL30030 = Specific Device Code
x = A or B
y = 1, 2 or 3
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
116
NCL30030xy
AWLYWWG
PFB
GND
PCS/PZCD
PDRV
QDRV
QCS
VCC
QZCD
BO/HV
MULT
PControl
PONOFF
QCT
Fault
QFB
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