NCL30051 Datasheet, PDF (1/16 Pages) ON Semiconductor – PFC and Half-Bridge Resonant Combo Contro for LED Lighting

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)
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 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
Typical Applications
• High Efficiency LED Drivers and Power Supplies
• Electronic Control Gear
• Lighting Ballasts
http://onsemi.com
MARKING
DIAGRAM
16
SOIC−16
D SUFFIX
CASE 751B
NCL30051G
AWLYWW
1
A
= Assembly Location
WL = Wafer Lot
Y
= Year
WW = Work Week
G
= Pb−Free Package
PIN CONNECTIONS
1
HV
HBoost
OSC
HDRVhi
GND
HVS
VREF
HDRVlo
PFB
PDRV
PCS
PGND
PZCD
VCC
PControl
PCT
SOIC−16
ORDERING INFORMATION
Device
Package
Shipping^†
NCL30051DR2G SOIC−16 2500/Tape & Reel
(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
1
November, 2011 − Rev. 0
Publication Order Number:
NCL30051/D