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IR2520D Datasheet PDF - International Rectifier

Part Number IR2520D
Description ADAPTIVE BALLAST CONTROL IC
Manufacturers International Rectifier 
Logo International Rectifier Logo 

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Data Sheet No. PD60212 revC
IR2520D(S) & (PbF)
ADAPTIVE BALLAST CONTROL IC
Features
600V Half Bridge Driver
www.DataSheet4U.com Integrated Bootstrap FET
Adaptive zero-voltage switching (ZVS)
Internal Crest Factor Over-Current Protection
0 to 6VDC Voltage Controlled Oscillator
Programmable minimum frequency
Micropower Startup Current (80uA)
Internal 15.6V zener clamp on Vcc
Small DIP8/SO8 Package
Also available LEAD-FREE (PbF)
Packages
8-Lead PDIP
IR2520D
8 Lead SOIC
IR2520DS
Description
The IR2520D(S) is a complete adaptive ballast controller and 600V half-bridge driver integrated into a single
IC for fluorescent lighting applications. The IC includes adaptive zero-voltage switching (ZVS), internal crest
factor over-current protection, as well as an integrated bootstrap FET. The heart of this IC is a voltage con-
trolled oscillator with externally programmable minimum frequency. All of the necessary ballast features are
integrated in a small 8-pin DIP or SOIC package.
Typical Application Diagram
BR1
F1 LF
L1
CF
L2
RSUPPLY
CBUS
CVCC
VCC
1
COM
2
FMIN
3
RFMIN VCO
4
CVCO
DCP2
VB
8
HO
7
VS
6
LO
5
MHS
CBS
MLS
SPIRAL
CFL
LRES
CSNUB
CDC
CRES
DCP1
www.irf.com
1

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IR2520D equivalent
IR2520D(S) & (PbF)
Block Diagram
www.DataSheet4U.com
VCC 1
15.6V
COM 2
IFMIN
IFMAX
IVCO
IQS
5V
VCO 4
5.1V
0.8V
4.8V
1V
IDT
CT
SQ
RQ
Fault
Logic
VCC
UVLO
S1 Q
S2
R1
R2 Q
TQ
RQ
Level SET
Driver
Logic
HIN
Shift
PGEN
RST
LIN
300ns
PGEN
1us
blank
FMIN
5V
IFMIN=
5V
RRFMIN
3
All values are typical
Bootstrap
FET
Bootstrap
FET
Control
UVLO
SQ
R1
R2
High-Voltage Well
Level-Shift
FETs
8 VB
7 HO
6 VS
VS-Sensing
FET
VCC
5 LO
Averaging
Circuit
x5
120uA
www.irf.com
5


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IR2520D datasheet


1. Datasheet - Adaptive Ballast Controller

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