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The IRS2168D is a fully integrated, fully protected 600 V ballast control IC designed to drive all types of fluorescent lamps. The IRS2168D is based on the popular IR2166 control IC with additional improvements to increase ballast performance. The PFC circuitry operates in critical conduction mode and provides high PF, low THD and DC bus regulation. The IRS2168D features include programmable preheat and run frequencies, programmable preheat time, programmable PFC over-current protection, closed-loop half-bridge ignition current regulation, and programmable end-of-life protection. Comprehensive protection features such as protection from failure of a lamp to strike, filament failures, end-of-life protection, DC bus undervoltage reset as well as an automatic restart function, have been included in the design.
IRS2168DSPBF Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defned positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions.
Symbol
Definition
Min.
Max.
Units
VB
VB pin high-side floating supply voltage
-0.3
625
V
VS
VS pin high-side floating supply offset voltage
VB 25
VB+0.3
VHO
HO pin high-side floating output voltage
VB 0.3
VB+0.3
VLO
LO pin low-side output voltage
-0.3
VCC+0.3
VPFC
PFC gate driver output voltage
IO,MAX
Maximum allowable output current (HO, LO, PFC) due to external power transistor miller effect
-500
500
mA
ICC
VCC current (see Note 1)
-25
25
VBUS
VBUS pin voltage
-0.3
VCC+0.3
V
VCPH
CPH pin voltage
VCOMP
COMP pin voltage
VZX
ZX pin voltage
VOC
OC pin voltage
VSD/EOL
SD/EOL pin voltage
VCS
CS pin voltage
VVCO
VCO pin voltage
-0.3
6
V
ICPH
CPH pin current
-5
5
mA
IVCO
VCO pin current
IFMIN
FMIN pin current
ICOMP
COMP pin current
IZX
ZX pin current
IOC
OC pin current
ISD/EOL
SD/EOL pin current
ICS
CS pin current
dV/dt
Allowable VS pin offset voltage slew rate
-50
50
V/ns
PD
Package power dissipation @ TA +25 PD = (TJMAX-TA)/RJA
(16-Pin DIP)
---
1.8
W
(16-Pin SOIC)
---
1.4
RJA
Thermal resistance, junction to ambient
(16-Pin DIP)
---
70
/W
(16-Pin SOIC)
---
86
TJ
Junction temperature
-55
150
TS
Storage temperature
-55
150
TL
Lead temperature (soldering, 10 seconds)
---
300
Note 1: This IC contains a Zener clamp structure between the chip VCC and COM which has a nominal breakdown voltage of 15.6 V. This supply pin should not be driven by a DC, low impedance power source greater than the VCLAMP specified in the Electrical Characteristics section.
IRS2168DSPBF Features
` PFC, ballast control and 600 V half-bridge driver in one IC ` Critical-conduction mode boost-type PFC ` Programmable PFC over-current protection ` Programmable half-bridge over-current protection ` Programmable preheat frequency ` Programmable preheat time ` Programmable ignition ramp ` Programmable run frequency ` Closed-loop ignition current regulation ` RoHs compliant ` Fixed internal 1.6 s HO and LO deadtime ` Voltage-controlled oscillator (VCO) ` End-of-life window comparator pin ` Internal 65-event current sense up/down fault counter ` DC bus undervoltage reset ` Lamp removal/auto-restart shutdown pin ` Internal bootstrap MOSFET ` Internal 15.6 V Zener clamp diode on Vcc ` Micropower startup (250 A) ` Latch immunity and ESD protection