Data Sheet No. PD60194_A IR21592(S) IR21593(S) DIMMING BALLAST CONTROL IC Features * Full lamp fault protection * Brown-out protection * Automatic restart * Micro-power startup * Zener clamped Vcc * Over-temperature protection * 16-pin DIP and SOIC package types * Ballast control and half-bridge driver in one IC * Transformer-less lamp power sensing * Closed-loop lamp power control * Closed-loop preheat current control * Programmable preheat time * Programmable preheat current * Lamp ignition detection * Programmable ignition-to-dim time * 0.5 to 5VDC dimming control input * Min and max lamp power adjustments * Programmable minimum frequency * Internal current sense blanking Parameter Deadtime Frequency Range IR21592 1.8us See Graph 11 IR21593 1.0us See Graph 12 Packages Description Description: The IR21592/IR21593 are complete dimming ballast controllers and 600V half-bridge drivers all in one IC. The architecture includes phase control for transformer-less lamp power sensing and regulation which minimizes changes needed to adapt non-dimming ballasts for dimming. Externally programmable features such as preheat time and current, ignition-to-dim time, and a complete dimming interface with minimum and maximum settings provide a high degree of flexibility for the ballast design engineer. Protection from failure of a lamp to strike, filament failures, thermal overload, or lamp failure during normal operation, as well as an automatic restart function, have been included in the design. The heart of this control IC is a voltagecontrolled oscillator with externally programmable minimum frequency. The IR21592/ IR21593 are available in both 16 pin DIP and 16 pin narrow body SOIC packages. 16 Lead SOIC (narrow body) 16 Lead PDIP Typical Connection + Rectified AC Line Single Lamp Dimmable + DC Bus RVDC CVDC CVCO CPH 0.5 to 5VDC RVAC RPULL-UP 1 2 3 RDIM 4 RMAX 5 RMIN 6 RFMIN 7 RIPH 8 VDC HO VCO VS CPH VB DIM VCC MAX COM MIN LO FMIN CS IPH SD 16 15 14 13 12 11 10 9 RCS - DC Bus www.irf.com 1 IR21592/IR21593(S) Absolute 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 defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. Symbol Definition VB High side floating supply voltage VS Min. Max. -0.3 625 High side floating supply offset voltage VB - 25 VB + 25 VHO High side floating output voltage VS - 0.3 VB + 0.3 VLO Low side output voltage -0.3 VCC + 0.3 Maximum allowable output current (either output) -500 500 -0.3 6.0 V mA IOMAX due to external power transistor miller effect VVCO Voltage controlled oscillator input voltage I CPH CPH current -5 5 VIPH IPH voltage -0.3 5.5 VDIM Dimming control pin input voltage -0.3 5.5 VMAX Maximum lamp power setting pin input voltage -0.3 5.5 VMIN Minimum lamp power setting pin input voltage -0.3 5.5 VCS Current sense input voltage -0.3 5.5 ISD Shutdown pin current -5 5 ICC Supply current (note 1) -- 25 dV/dt PD Allowable offset voltage slew rate Package power dissipation @ TA +25C PD = (TJMAX-TA)/RthJA RthJA Thermal resistance, junction to ambient -50 50 (16 pin DIP) -- 1.60 (16 pin SOIC) -- 1.25 (16 pin DIP) -- 75 (16 pin SOIC) -- 115 TJ Junction temperature -55 150 TS Storage temperature -55 150 TL Lead temperature (soldering, 10 seconds) -- 300 Note 1: 2 Units V mA V mA V/ns W o C/W o C This IC contains a zener clamp structure between the chip VCC and COM which has a nominal breakdown voltage of 15.6V (VCLAMP). Please note that this supply pin should not be driven by a DC, low impedance power source greater than the diode clamp voltage (VCLAMP) as specified in the Electrical Characteristics section. www.irf.com IR21592/IR21593(S) Recommended Operating Conditions For proper operation the device should be used within the recommended conditions. Symbol Definition VBS High side floating supply voltage VS Steady state high side floating supply offset voltage Min. Max. VCC - 0.7 V CLAMP -1 600 V CC Supply voltage V CCUV+ VCLAMP (15.6) I CC Supply current note 2 10 5 VVCO VCO pin voltage 0 VDIM DIM pin voltage 0.5 5.0 VMAX MAX pin current (note 3) -750 0 VMIN MIN pin voltage 1 -- 10 3 Minimum required VBS voltage for proper HO functionality Minimum frequency setting resistance 5 100 ISD Shutdown pin current -1 1 ICS Current sensing pin current -1 1 TJ Junction temperature -40 125 VBSMIN RFMIN Note 2: Note 3: Units V mA V A V k mA o C Enough current should be supplied into the VCC lead to keep the internal 15.6V zener clamp diode on this lead regulating its voltage, VCLAMP. The MAX lead is a voltage-controlled current source. For optimum dim interface current mirror performance, this current should be kept between 0 and 750A. Electrical Characteristics VCC = VBS = VBIAS = 14V +/- 0.25V, VCS = 0.5V, VSD = 0.0V, RFMIN = 40k, CVCO = 10 nF, VDIM = 0.0V, RMAX = 33k, RMIN = 56k, VCPH = 0.0V, CLO,HO = 1000pF, TA = 25oC unless otherwise specified. Symbol Definition Min. Typ. Max. VCC supply undervoltage positive going 12.0 threshold VCC supply undervoltage lockout hysteresis 1.5 UVLO mode quiescent current 70 Fault-mode quiescent current -- 12.5 13.0 1.6 200 240 1.7 330 -- -- -- -- -- 5.6 6.0 5.4 6.8 -- -- -- -- 14.5 15.6 16.5 Units Test Conditions Supply Characteristics VCCUV+ VCCHYS IQCCUV IQCCFLT ICCFMIN ICCFMAX ICCFMIN ICCFMAX VCC VCC VCC VCC VCLAMP VCC zener shunt clamp voltage www.irf.com supply supply supply supply current @ FMIN (IR21592) current @ FMAX (IR21592) current @ FMIN (IR21593) current @ FMAX (IR21593) V A mA V VCC = 10V SD=5V, CS=2V, or Tj > TSD VVCO = 0V VVCO = 5V VVCO = 0V VVCO = 5V ICC = 10mA 3 IR21592/IR21593(S) Electrical Characteristics (cont.) VCC = VBS = VBIAS = 14V +/- 0.25V, VCS = 0.5V, VSD = 0.0V, RFMIN = 40k, CVCO = 10 nF, VDIM = 0.0V, RMAX = 33k, RMIN = 56k, VTPH = 0.0V, CLO,HO = 1000pF, TA = 25oC unless otherwise specified. Symbol Definition Min. Typ. Max. Units Test Conditions Floating Supply Characteristics IBSFMIN IBSFMAX ILK VBS supply current (low freq.) VBS supply current (high freq.) Offset supply leakage current -- -- -- 0 30 -- -- -- 50 15 18 22 73 -- -- -- -- 95 30 230 50 5 108 -- -- -- -- -- -- 1.0 16.0 -- -- A VVCO = 0V VVCO = 5V VB = VS = 600V Oscillator I/O Characteristics f vco f vco d VVCOFLT IVCOPH IVCODIM VCO frequency range (IR21592) (See graph 11) VCO frequency range (IR21593) (See graph 12) Gate drive outputs duty cycle Fault-mode VCO pin voltage (UVLO, shutdown, over-current/temp.) Preheat mode VCO pin discharge current Dim mode VCO pin discharge current IVCOPK Amplitude control VCO pin charging current -- 60 -- tDTLO tDTHO tDTLO tDTHO LO output deadtime (IR21592) HO output deadtime (IR21592) LO output deadtime (IR21593) HO output deadtime (IR21593) -- -- -- -- 1.8 1.8 1.0 1.0 -- -- -- -- VVCO=0V, RFMIN=40K kHz % V VVCO=5V, RFMIN=40K VVCO=0V, RFMIN=40K VVCO=5V, RFMIN=40K VVCO = 2.5V VCPH=2.5V, VIPH=0.5V A A s VVCO=2.5V, VCPH=5.5V, VIPH=0.5V, 1V Pulse at CS VCPH=0V, VCS =1V, VIPH=0.5V, VVCO=2.5V VVCO=0V, VMIN=1.5V, VIPH=0.5V Gate Driver Output Characteristics tr Turn-on rise time 48.5 120 180 tf Turn-off fall time 24.25 65 145 4 ns www.irf.com IR21592/IR21593(S) Electrical Characteristics (cont.) VCC = VBS = VBIAS = 14V +/- 0.25V, VCS = 0.5V, VSD = 0.0V, RFMIN = 40k, CVCO = 10 nF, VDIM = 0.0V, RMAX = 33k, RMIN = 56k, VTPH = 0.0V, CLO,HO = 1000pF, TA = 25oC unless otherwise specified. Symbol Definition Min. Typ. Max. Units Test Conditions Preheat Characteristics ICPH CPH pin charging current 0.8 1.3 2.1 A VCPHIGN VCPHCLMP IIPH CPH pin ignition mode threshold voltage CPH pin clamp voltage IPH pin DC source current 4.3 -- 5.0 10 5.7 -- V -- 25 -- A VCSTHPH Peak preheat current regulation threshold -- 0.7 -- V VCPHFLT CPH pin voltage during UVLO or fault -- 0.0 -- V SD = 5V, or CS = 2V, or Tj > TSD A VCS=0V, RIPH=18K, VCPH>5.1V VCS =1.0V, VCPH>5.1V VCPH=VDIM=4.7V, VCS=1.0V VCS=2.0V VCS=VDIM=VIPH=0V VCPH=VDIM=4.7V, IIPH=1/RFMIN RIPH=27K, VMIN=0V, VCPH=0V, VCSTH = (IIPH) x (RIPH) Ignition Detection IIPHIGN+ IPH source current (Vcs rising) -- 30 -- IIPHIGN- IPH source current (Vcs falling) -- 27.5 -- 1.6 1.2 -- -- -- -- -- 2.0 1.6 5.1 150 2.1 7.6 165 2.6 1.9 -- -- -- -- -- mV -- 291 0.0 400 -- 1030 V ns VCPH =5.5V,VIPH=0.5V VCPH =5.5V,VIPH=0.5V -- -- -- 0.5 1.0 3.0 -- -- -- V VCPH=5.5V,VIPH=0.5V VCPH =0.5V,VIPH=0.5V 4.6 -- 5.1 0.0 6.25 -- V V VMIN=1.5V,VIPH=0.5V SD = 5V, or CS = 2V, or Tj > TSD Protection Characteristics VSDTH+ VCSTH VVDCTH+ VSDHYS VVDCHYS VSDCLMP TSD Rising shutdown pin threshold voltage Peak over current threshold Rising VDC pin threshold voltage SD threshold hysteresis VDC threshold hysteresis SD pin clamp voltage Thermal shutdown junction temperature V V VCPH =VIPH=0V VCPH < 5V VCPH=VCS=VSD=0V VCPH =VIPH=0V VCPH=VCS=VSD=0V ISD = 100mA oC Phase Control VCSTHZX tBlank Zero-crossing threshold voltage Zero-crossing internal blank time Dimming Interface VDIMOFF VMINMIN VMINMAX DIM pin offset voltage DIM minimum reference voltage (MIN pin) DIM maximum reference voltage (MIN pin) Minimum Frequency Setting VFMIN VFMINFLT FMIN pin voltage during normal operation FMIN pin voltage during fault mode www.irf.com 5 IR21592/IR21593(S) Block Diagram VCC 60uA ICT RFB VCO 2 V 15uA 1uA LEVEL SHIFT VDC 1 S Q R Q PULSE FILTER & LATCH 14 VB 16 HO 15 VS 13 VCC 11 LO 12 COM 10 CS ERR 1.0uA CPH 3 CT REF 10V ICT DIM 4 5.1V S Q R Q S 5.1V Q R1 T Q R Q R2 Q 1.0V 15.6V I DT + I CT 400ns DELAY CT IDIM FB MAX 5 4/RFMIN MIN 6 0.1/R FMIN 0.1/R FMIN IDIM/5 IFMIN FMIN 7 5.1V IPH IGN DET 3V S Q R Q 1.6V 8 S Q R OVERTEMP DETECT UNDERVOLTAGE DETECT 1/RFMIN 1 Q 5.1V 9 2.0V SD 7.6V 0 Lead Assignments & Definitions Pin # Symbol Pin Assignments 6 VDC 1 16 HO VCO 2 15 VS CPH 3 14 VB DIM 4 13 VCC MAX 5 12 COM MIN 6 11 LO FMIN 7 10 CS IPH 8 9 SD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 VDC VCO CPH DIM MAX MIN FMIN IPH SD CS LO COM VCC VB VS HO Description Line input voltage detection Voltage controlled oscillator Input Preheat timing input 0.5 to 5VDC dimming control input Maximum lamp power setting Minimum lamp power setting Minimum frequency setting Peak preheat current reference Shutdown input Current sensing input Low-side gate driver output IC power & signal ground Logic & low-side gate driver supply High-side gate driver floating supply High voltage floating return High-side gate driver output www.irf.com IR21592/IR21593(S) State Diagram Power Turned On UVLO Mode 1/2-Bridge Off IQCC=200mA CPH=0V Oscillator Off VCC > 12.5V and VDC > 5.1V and SD < 1.7V and T < 165C J SD > 2.0V (Lamp Removal) or VCC < 10.9V (Power Turned Off) T > 165C J (Over-Temperature) FAULT Mode Fault Latch Set 1/2-Bridge Off IQCC =240A CPH=0V VCC=15.6V Oscillator Off (UV+) (Bus OK) (Lamp OK) (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@I PH+1A DIM+Open Circuit Over-Current Disabled CPH > 5.1V CS > V CSTH (1.6V) (End of PREHEAT Mode) (Failure to Strike Lamp or Hard Switching) or T J > 165C (Over-Temperature) IGNITION Mode fPH ramps to fMIN CPH Charging@I PH+1A DIM=Open Circuit Over-Current Enabled CS > V CSTH (1.6V) (Over-Current or Hard Switching) or TJ > 165C VCS>VIPH(enable ignition detection) (Over-Temperature) then VCS 5kHz I ign < I ignmax Inductor saturation Lamp extinguishing during dimming Table II, Ballast design constraints VDC Vign LC IR21592/IR21593 Programmable Inputs [Hz] (4) The total load current during ignition is given as: Iign = f ign CVign 2 22 (6) The cathode heating current at minimum lamp power is given as: I Cath1% I Cathmin The resulting operating frequency during ignition is given as: 2 [App] (5) In order to program the MIN and MAX settings of the dimming interface, the phase of the output stage current at minimum and maximum lamp power must be calculated. This is obtained using the following equations: www.irf.com IR21592/IR21593(S) 2 4VDC 2 1- V 2 2 1 32P% 1 1 32P% % - + - 2 4 - f% = 2 LC C2V%4 L2C2 LC C V% % = 180 -1 V%2 2P V2 tan [( C - 2% L)2f% - 4 % LC23 f%3] 2P% V% P% (8) (9) With the lamp requirements defined, the L and C of the ballast output stage selected, and the minimum and maximum phase calculated, the component values for setting the programmable inputs of the IR21592/IR21593 are obtained with the following equations: R FMIN = RCS = (25e - 6) - ( f MIN - 10000) (1e - 10) ( f MIN - 10000) (2e - 14) [Ohms] (10) 2 (1.6) I ign [Ohms] (11) RIPH = RFMIN RCS I ph 2 [Ohms] (12) C CPH = (2.6 E - 7)(t PH ) [Farads] (13) [Ohms] (14) RMIN = RMAX = R FMIN 1% 1 - 4 45 0.86 RFMIN RMIN 4 RMIN - RFMIN 1 - 100% 45 [Ohms] www.irf.com (15) 23 IR21592/IR21593(S) This ballast design procedure has been summarized into the following 3 steps: Define Lamp Requirements Iterate L and C to fulfill constraints Calculate IR21592/IR21593 IR2159 Programmable Inputs Figure 19, Simplified Ballast Design Procedure Case outline 16 Lead PDIP 24 01-6015 01-3065 00 (MS-001A) www.irf.com IR21592/IR21593(S) 16 -Lead SOIC (narrow body) 01-6018 01-3064 00 (MS-012AC) IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 Data and specifications subject to change without notice. This product has been designed and qualfied for the industrial market. 11/13/2003 www.irf.com 25