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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 controlled oscillator with externally programmable minimum frequency. All of the necessary ballast features are integrated in a small 8-pin DIP or SOIC package.
IR2520DS Maximum Ratings
Symbol
Definition
Min.
Max.
Units
VB
High side floating supply voltage
-0.3
625
V
VS
High side floating supply offset voltage
VB - 25
VB + 0.3
VHO
High side floating output voltage
VS - 0.3
VB + 0.3
VLO
Low side output voltage
-0.3
VCC + 0.3
IVCO
Voltage controlled oscillator input current (Note 1)
-5
+ 5
mA
ICC
Supply current (Note 2)
-25
25
mA
dVS/dt
Allowable offset voltage slew rate
-50
50
V/ns
PD
Package power dissipation @ TA +25 PD=(TJMAX-TA)RthJA
8-Lead PDIP
-
1
W
8-Lead SOIC
-
0.625
RthJA
Thermal resistance, junction to ambient
8-Lead PDIP
-
125
/W
8-Lead SOIC
-
200
TJ
Junction temperature
-55
150
TS
Storage temperature
-55
150
TL
Lead temperature (soldering, 10 seconds)
-
300
IR2520DS Features
• 600V Half Bridge Driver • 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)