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NCL30051
PFC and Half-Bridge
Resonant Combo Controller
for LED Lighting
The NCL30051 is a combination of PFC and half ? bridge resonant
controllers optimized for off ? line LED lighting solutions. This
device integrates all the features needed to implement a highly
efficient and small form factor LED Driver/Power Supply. It contains
a critical conduction mode (CrM) power factor correction (PFC)
http://onsemi.com
MARKING
DIAGRAM
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
SOIC ? 16
D SUFFIX
CASE 751B
16
1
NCL30051G
AWLYWW
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
A
WL
Y
WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb ? Free Package
are properly sequenced, simplifying system design.
Features
PIN CONNECTIONS
1
?
?
?
?
?
?
?
?
?
?
?
Voltage Mode CrM 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
HV HBoost
OSC HDRVhi
GND HVS
VREF HDRVlo
PFB PDRV
PCS PGND
PZCD VCC
PControl PCT
SOIC ? 16
ORDERING INFORMATION
Device Package Shipping ?
Typical Applications
NCL30051DR2G
SOIC ? 16
2500/Tape & Reel
? High Efficiency LED Drivers and Power Supplies
? Electronic Control Gear
? Lighting Ballasts
(Pb ? Free)
?For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
? Semiconductor Components Industries, LLC, 2011
November, 2011 ? Rev. 0
1
Publication Order Number:
NCL30051/D
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