IRS2538DSPBF Magnetic Replacement Ballast IC Features Ballast control plus half-bridge driver in one IC Single-stage topology (no PFC stage required) Description This IC takes full advantage of IR’s patented ballast and high-voltage technologies to realize a simple, highperformance magnetic ballast replacement solution. The IC includes a novel single-stage circuit topology and control method to achieve high power factor and low THD without a PFC stage or any electrolytic capacitors. A single high-voltage pin senses the halfbridge voltage to perform necessary protection functions. Closed-loop control of the lamp current provides constant lamp brightness over a wide line input voltage range. Combining these high-voltage control algorithms in a single 8-pin IC results in a large reduction in component count, an increase in manufacturability and reliability, a reduced design cycle time, while maintaining high ballast system performance. High PF and low THD Preheat, ignition and running lamp modes Closed-loop lamp current control Half-bridge NZVS protection Adaptive dead-time Lamp insert auto-restart Internal bootstrap MOSFET Micro-power start-up current 15.6V internal zener clamp on VCC Excellent ESD and latch immunity RoHS compliant 8-pin SO8 package Package Options Applications Magnetic replacement electronic ballast Low cost electronic ballast 8-Lead SOIC Application Diagram F1 L L1 220VAC LINE INPUT BR1 C1 RVCC1 N RVCC2 CVCC1 RLIM2 VCC CVCC2 COM CFB VB 1 2 FB 3 CVCO VCO 4 RFB 8 IRS2538D RLIM1 CBUS 7 6 5 RHO MHS HO VS LO LRES:A CDC CBS LRES:B CSNUB RLO DCP2 RVIGN1 RLMP2 RVIGN2 MLS CH1 CRES RLMP1 DCP1 DIGN DZIGN RVIGN3 CH2 LRES:C RCS Ordering Information Base Part Number Package Type IRS2538DSPBF SO8N 1 www.irf.com © 2013 International Rectifier Standard Pack Form Quantity Tape and Reel 2500 Orderable Part Number IRS2538DSTRPBF Aug 16, 2013 IRS2538DSPBF Functional Block Diagram Bootstrap MOSFET VCC 1 Driver Logic UVLO COM 2 High-Side Half-bridge Driver 8 VB 7 HO 6 VS 5 LO Voltage Controlled Oscillator VCO 4 Mode Logic Half-bridge Voltage Sensing Non-ZVS Protection Closed-loop Current Control Low-Side Half-bridge Driver Ignition Regulation 3 FB 2 Restart Logic www.irf.com © 2013 International Rectifier Aug 16, 2013 IRS2538DSPBF Timing Diagram VRECT+ time V_Lamp time I_Lamp time REIGN Mode 3 www.irf.com RUN Mode © 2013 International Rectifier REIGN Mode RUN Mode Aug 16, 2013 IRS2538DSPBF Qualification Information† Qualification Level Moisture Sensitivity Level Machine Model ESD Human Body Model IC Latch-Up Test RoHS Compliant †† Industrial (per JEDEC JESD 47E) Comments: This family of ICs has passed JEDEC’s Industrial qualification. IR’s Consumer qualification level is granted by extension of the higher Industrial level. ††† MSL2 SOIC8N (per IPC/JEDEC J-STD-020C) Class A (per JEDEC standard EIA/JESD22-A115-A) Class IC (per EIA/JEDEC standard JESD22-A114-B) Class I, Level A (per JESD78A) Yes † †† Qualification standards can be found at International Rectifier’s web site http://www.irf.com/ Higher qualification ratings may be available should the user have such requirements. Please contact your International Rectifier sales representative for further information. ††† Higher MSL ratings may be available for the specific package types listed here. Please contact your International Rectifier sales representative for further information. 4 www.irf.com © 2013 International Rectifier Aug 16, 2013 IRS2538DSPBF 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 pin. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. Symbol Definition Min. Max. -0.3 625 Units VB High-Side Floating Supply Voltage 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 VVCO VCO Input Voltage -0.3 6 VFB FB Input Voltage -0.3 VCC + 0.3 --- 20 -500 500 -50 50 V/ns † ICC V dVS/dt Supply Current Maximum allowable current at LO, HO and PFC due to external power transistor Miller effect. Allowable VS Pin Voltage Slew Rate PD Maximum Power Dissipation @ TA +25ºC, 8-Pin SOIC --- 0.625 W RJA Thermal Resistance, Junction to Ambient, 8-Pin SOIC --- 128 ºC/W TJ Junction Temperature -55 150 TS Storage Temperature -55 150 TL Lead Temperature (Soldering, 10 seconds) --- 300 IOMAX mA ºC †: This IC contains a voltage clamp structure between the chip VCC and COM which has a nominal breakdown voltage of 15.6V. This supply pin should not be driven by a DC, low impedance power source greater than the VCLAMP specified in the Electrical Characteristics section. 5 www.irf.com © 2013 International Rectifier IRS2538DSPBF Recommended Operating Conditions For proper operation the device should be used within the recommended conditions. Symbol VBS Definition High-Side Floating Supply Voltage Steady State High-Side Floating Supply Offset Voltage Supply Voltage VS VCC ICC Supply Current TJ Junction Temperature ††: Min. Max. Units VCC - 0.7 VCLAMP V 600 V VCLAMP V 5 mA 125 ºC †† -3.0 VCCUV+ + 0.1V ††† -40 Care should be taken to avoid output switching conditions where the V S node rings below COM by more than 5V. †††: Enough current should be supplied to the VCC pin of the IC to keep the internal 15.6V zener diode regulating at its voltage, VCLAMP. 6 www.irf.com © 2013 International Rectifier IRS2538DSPBF Electrical Characteristics VCC=VBS=14V, VS=0V and TA = 25°C unless otherwise specified. The output voltage and current (VO and IO) parameters are referenced to COM and are applicable to the respective HO and LO output pins. Symbol Definition Min Typ Max Units Test Conditions Low Voltage Supply Characteristics VCLAMP VCC Zener Clamp Voltage 14.5 15.5 16.5 VCCUV+ Rising VCC UVLO Threshold 11.2 11.8 12.3 VCCUV- Falling VCC UVLO Threshold 8.5 9.0 9.5 VCC UVLO Hysteresis --- 2.8 --- IQCCUV Micro-power Startup VCC Supply Current --- --- 125 ICCfmin fMIN VCC Supply Current --- 2.2 --- ICCfmax fMAX VCC Supply Current --- 3.2 --- IQCCFLT Fault Mode VCC Supply Current --- --- 300 µA Quiescent VBS Supply Current --- 28 --- µA VBSUV+ Rising VBS Supply UVLO Threshold --- 7.2 --- VBSUV- Falling VBS Supply UVLO Threshold --- 6.8 --- Offset Supply Leakage Current --- --- 170 VCCUVHYS ICC = 10mA V µA mA VCC = VCCUV+ - 500mV VCO ≥ 5V VCO = 0V MODE = FAULT, VCC = VCCUV+ Floating Supply Characteristics IQBS ILK V A VB = VS = 600V Ballast Control Characteristics fMIN Minimum Output Frequency 17.4 18.3 19.4 fMAX Maximum Output Frequency 80.9 85.6 91.3 Duty Cycle --- 50 --- DTMIN Minimum Output Dead-time (HO or LO) --- 0.48 --- DTMAX Maximum Output Dead-time (HO or LO) --- 1.35 --- VLOSD+ LO Pin Shutdown Threshold --- 13.3 --- VLOSD- LO Pin Re-start Threshold --- 11.1 --- VLORSTHYS LO Pin Restart Hysteresis --- 2.2 --- VS Non-ZVS Detection Threshold --- 4.6 --- d VZVSTH 7 www.irf.com © 2013 International Rectifier kHz VCO ≥ 5V VCO = 0V % µs MODE = FAULT V LO = HIGH IRS2538DSPBF Electrical Characteristics VCC=VBS=14V, VS=0V and TA = 25°C unless otherwise specified. The output voltage and current (VO and IO) parameters are referenced to COM and are applicable to the respective HO and LO output pins. Symbol Definition Min Typ Max --- 2.0 --- Units Test Conditions PREHEAT Mode Characteristics TPH Preheat Time fLine = 60Hz, GBD sec --- 2.4 --- --- VCC --- fLine = 50Hz, GBD IGNITION Mode Characteristics VLOIGN+ LO Pin Ignition Voltage Threshold V MODE = RE-IGN RUN Mode Characteristics VFBREG+ FB Pin Regulation Threshold 0.93 1.0 1.09 VIGNDET+ FB Pin Ignition Detection Threshold 0.1 0.2 0.3 VCO Charging Current 9.8 10.8 11.7 ZVS VCO Discharging Current --- 400 --- V VCO Control Characteristics IVCO IVCO_ZVS 8 www.irf.com © 2013 International Rectifier uA MODE = IGN IRS2538DSPBF Electrical Characteristics VCC=VBS=14V, VS=0V and TA = 25°C unless otherwise specified. The output voltage and current (VO and IO) parameters are referenced to COM and are applicable to the respective HO and LO output pins. Symbol Definition Min Typ Max Units Test Conditions Gate Driver Output Characteristics (HO and LO) VOH_LO1 LO Leading Edge High-Level Output Voltage --- 12.6 --- VOH_LO2 LO Steady State High-Level Output Voltage --- 10.8 --- VOH_HO HO High-Level Output Voltage --- VBS --- Low-Level Output Voltage --- COM --- tR Output Rise Time --- 120 --- tF Output Fall Time --- 50 --- IO+ Output Source Current --- 180 --- IO- Output Sink Current --- 260 --- VOL V IO = 0A ns CHO=1nF, CLO=1nF mA Bootstrap FET Characteristics VB_ON VB when the bootstrap FET is on --- 14.0 --- IB_CAP VB source current when FET is on --- 23.0 --- IB_10V VB source current when FET is on --- 4.2 --- 9 www.irf.com © 2013 International Rectifier V mA LO = ‘HIGH’ CBS = 0.1uF VB = 10V IRS2538DSPBF Pin Assignments and Definitions Name 10 1 COM 2 FB 3 VCO 4 8 IRS2538D VCC No. VB 7 HO 6 VS 5 LO Description VCC 1 Logic and internal gate drive supply voltage COM 2 IC power and signal ground FB 3 Lamp current feedback input VCO 4 Voltage-controlled oscillator (VCO) input LO 5 Half-bridge low-side gate driver output VS 6 High voltage floating supply return and half-bridge sensing input HO 7 High-side gate driver output VB 8 High-side gate driver floating supply www.irf.com © 2013 International Rectifier IRS2538DSPBF State Diagram Power Off VCC=0V VCC>0V UVLO MODE VCC<VCCUV- or Lamp Removed IQCC=IQCCUV HO=VS LO=OPEN VCO=COM VCC<VCCUV- VCC>VCCUV+ and Lamp Inserted Fault MODE Preheat MODE IQCC=IQCCFLT HO=VS LO=OPEN VCO=COM FREQ=fMAX VCO=COM t > TPH Lamp does not ignite IGNITION MODE FREQ=ramping down Lamp Ignites Lamp Extinguishes RUN MODE FB=VFBREG Lamp Extinguishes Lamp does not re-ignite RE-IGNITION MODE Lamp Re-ignition 11 www.irf.com © 2013 International Rectifier Lamp Re-Ignites IRS2538DSPBF Package Details: SO8N 12 www.irf.com © 2013 International Rectifier IRS2538DSPBF Tape and Reel Details: SO8N LOADED TAPE FEED DIRECTION A B H D F C NOTE : CONTROLLING DIMENSION IN MM E G CARRIER TAPE DIMENSION FOR 8SOICN Metric Imperial Code Min Max Min Max A 7.90 8.10 0.311 0.318 B 3.90 4.10 0.153 0.161 C 11.70 12.30 0.46 0.484 D 5.45 5.55 0.214 0.218 E 6.30 6.50 0.248 0.255 F 5.10 5.30 0.200 0.208 G 1.50 n/a 0.059 n/a H 1.50 1.60 0.059 0.062 F D C B A E G H REEL DIMENSIONS FOR 8SOICN Metric Code Min Max A 329.60 330.25 B 20.95 21.45 C 12.80 13.20 D 1.95 2.45 E 98.00 102.00 F n/a 18.40 G 14.50 17.10 H 12.40 14.40 13 www.irf.com Imperial Min Max 12.976 13.001 0.824 0.844 0.503 0.519 0.767 0.096 3.858 4.015 n/a 0.724 0.570 0.673 0.488 0.566 © 2013 International Rectifier IRS2538DSPBF Part Marking Information: SO8N Part number S2538 Date code YWW ? Pin 1 Identifier IR logo ? XXXX ? MARKING CODE P Lead Free Released Non-Lead Free Released Lot Code (Prod mode – 4 digit SPN code) Assembly site code Per SCOP 200-002 The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no responsibility for the consequences of the use of this information. International Rectifier assumes no responsibility for any infringement of patents or of other rights of third parties which may result from the use of this information. No license is granted by implication or otherwise under any patent or patent rights of International Rectifier. The specifications mentioned in this document are subject to change without notice. This document supersedes and replaces all information previously supplied. For technical support, please contact IR’s Technical Assistance Center http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 14 www.irf.com © 2013 International Rectifier