IR2159 datasheet(7/25 Pages) IRF

7 / 25 page

IR2159/IR21591 (S)

www.irf.com

UVLO Mode

2-Bridge Off

QCC ≅ 200µA

CPH = 0V

Oscillator Off

PREHEAT Mode

2-Bridge Oscillator On

CSPK=VIPH (Peak Current Control)

CPH Charging @ I

PH = 1µA

DIM = Open Circuit

Over-Current Disabled

IGNITION Mode

PH ramps to f MIN

CPH Charging @ I

PH = 1µA

DIM = Open Circuit

Over-Current Enabled

DIM Mode

Phase

CS = Phase REF

DIM = CPH

Over-Current Enabled

VCC > 12.5V (UV+)

and

VDC > 5.1V (Bus OK)

and

SD < 1.7V (Lamp OK)

and

J < 175C (Tjmax )

CPH > 5.1V

(End of PREHEAT Mode)

VCO < V

DIMTH

(End of IGNITION Mode)

VCC < 10.9V

(VCC Fault or

Power Down)

VDC < 3.0V

(dc Bus/ac Line Fault

or Power Down)

SD > 2.0V

(Lamp Fault or

Lamp Removal)

Power Turned On

FAULT Mode

Fault Latch Set

2-Bridge Off

QCC ≅ 240µA

CPH = 0V

VCC = 15.6V

Oscillator Off

J > 175C

(Over-

Temperature)

CS > V

CSTH (1.6V)

(Failure to Strike Lamp

or Hard Switching)

J > 175C

(Over-Temperature)

CS > V

CSTH (1.6V)

(Over-Current or Hard Switching)

J > 175C

(Over-Temperature)

SD > 2.0V

(Lamp Removal)

VCC < 10.9V

(Power Turned Off)

State Diagram

IR2159 Datasheet(PDF) 7 Page - International Rectifier

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