IR21592SPBF Ver la hoja de datos (PDF) - International Rectifier

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IR21592SPBF

DIMMING BALLAST CONTROL IC

International Rectifier 

State Diagram

IR21592/IR21593(S) &(PbF)

Power Turned On

UVLO Mode

1/2-Bridge Off

IQCC=200mA

CPH=0V

Oscillator Off

SD > 2.0V

(Lamp Removal)

or

VCC < 10.9V

(Power Turned Off)

FAULT Mode

Fault Latch Set

1/2-Bridge Off

IQCC=240µA

CPH=0V

VCC=15.6V

Oscillator Off

TJ > 165C

(Over-Temperature)

VCC > 12.5V (UV+)

and

VDC > 5.1V (Bus OK)

and

SD < 1.7V (Lamp OK)

and

TJ < 165C (T jmax)

VCC < 10.9V

(VCC Fault or Power Down)

or

VDC < 3.0V

(dc Bus/ac Line Fault or Power Down)

or

SD > 2.0V

(Lamp Fault or Lamp Removal)

PREHEAT Mode

1/2-BridgeOscillator On

VCSPK+VIPH (Peak Current Control)

CPH Charging@IPH+1µA

DIM+Open Circuit

Over-Current Disabled

CS > V CSTH (1.6V)

(Failure to Strike Lamp

CPH > 5.1V

(End of PREHEAT Mode)

or Hard Switching)

or

TJ > 165C

(Over-Temperature)

CS > V (1.6V)

CSTH

(Over-Current or Hard Switching)

IGNITION Mode

fPH ramps to fMIN

CPH Charging@IPH+1µA

DIM=Open Circuit

Over-Current Enabled

or

TJ > 165C

(Over-Temperature)

VCS>VIPH(enable ignition detection)

then

VCS<VIPH(ignition detected)

DIM Mode

PhaseCS=PhaseREF

DIM=CPH

Over-Current Enabled

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