IP3101 Versatile Gate Driver DESCRIPTIONS The IP3101 provides simple and high performance control functions for the half bridge L/C resonant system, specially electronic ballast . It internally integrated the essential functions of the half bridge L/C resonant system so the conventional system can be realized a minimum board area, small external components and low power dissipation. Internally integrated soft-start circuit eliminated the need for external soft-start circuit. And the initial preheating switching frequency and preheating time can be easily programmable with only one capacitor (preheating frequency capacitor) and one resistor (preheating time capacitor) depending on the types of lamps. Also the normal operating frequency can be easily adjusted by timing resistor (Rt) and timing capacitor (Ct). The cold cathode current can be limited by changing the normal operating frequency to soft-start frequency with an external small signal transistor. No lamp protection or any required protection like over current protection can be realized by adding an external small signal transistor. 8DIP 8SOP FEATURES - Internal Soft Start - Programmable Soft Start Frequency - Programmable Preheating Time - Very Precision Internal Operating Frequency(+5%) - No Lamp Protection or Over Current Protection - Precision Internal Reference Voltage - 8DIP, 8SOP Packages ORDER INFORMATIONS Device BLOCK DIAGRAM Package IP3101 8DIP I3101 8SOP Operating Temp ° ° -25 C ~ 125 C Vz Ipht PHT 1 Iss Voltage Reference (Vz,Vref) Pre-Heat Oscillator Reference Output 1.5V UVLO (10V/8V) 8 VCC Vcc UVLO CT Ichg 2 7 HO OSCILLATOR Idis I(CT)=I(RT)+I(PHF) OUTPUT LOGIC Vcc I(CT) I(RT) RT 3 6 LO OSC, PHT, HO,LO I(PHF) Shutdown Iss PHF 4 5 GND 1.0V September. 2003 Delay Timer Protection Comparator http://www.interpionsemi.com -1- IP3101 Versatile Gate Driver PIN CONNECTIONS PIN DESCRIPTIONS NO SYMBOL I/O DESCRIPTION 1 PHT I Preheating Time & Soft-start Time Control Pin with Capacitor 2 CT I Internal Oscillator Timing Control Pin with Capacitor 3 RT I Internal Oscillator Timing Control Pin with Resister 4 PHF I Preheating Frequency & Soft-Start Frequency Control Pin with Resister 5 GND - Ground 6 LO O Low Side Gate Drive Output 7 HO O High Side Gate Drive Output 8 VCC - Supply Voltage ABSOLUTE MAXIMUM RATINGS CHARACTERISTICS SYMBOL VALUE UNIT Maximum Supply Voltage VCCMAX 30 V Maximum Operating Supply Voltage VOPMAX 24 V Totem-pole Output Peak Current IPEAK 300 +mA Power Dissipation(8DIP) Pd 800 mW PIN1,2,3,4 Voltage VIN -0.4 ~ 6 V Output Clamp Diode Current ICLAMP 30 mA Operating Junction Temperature Tj -25 ~ +125 ° Storage Temperature Tstg -65 ~ 150 ° September. 2003 http://www.interpionsemi.com C C -2- IP3101 Versatile Gate Driver ELECTRICAL CHARACTERISTICS ° (Ta = 25 C, Vcc=14V, fosc=46KHz, unless otherwise specified.) CHARACTERISTICS SYMBOL CONDITIONS MIN TYP MAX UNIT Total Supply Current Section Start-up Current IST Vcc = 9V - 125 250 uA Quiescent Current IQ Not Switching 3 7.5 12 mA fosc=46KHz, Co=1nF 4 9 14 mA Vcc Increasing 9 10 11 V 1.5 2 2.5 V Operating Supply Current ICC Under Voltage Lock Output Section Vcc Turn-On Voltage VCCON UVLO Hysteresis Voltage HYS Preheating (Soft Start) Section PHT Charging Current IPHT PIN1=0V 0.7 0.9 1.1 uA PHT Threshold Voltage VPHT PIN1 Increasing, Rphf=33KΩ 1.2 1.5 1.8 V PHF Reference Voltage VPHF IPHF=100uA 1.95 2.00 2.05 V PHF Reference Voltage Line Regulation DVPHF1 Vcc=12~20V -6 0.1 6 mV PHF Reference Voltage Load Regulation DVPHF2 Io=50uA~200uA -12 -0.1 12 mV Protection Input Threshold Voltage VPROT PIN4=from 2.0V to 0V 0.7 1.0 1.3 V Protection Triggering Current IPROT PIN4=0V - -1 - mA 200 - - uA Protection Section PHF Maximum Current September. 2003 IPHF VPHF=1.5V http://www.interpionsemi.com -3- IP3101 Versatile Gate Driver ELECTRICAL CHARACTERISTICS (Continued) CHARACTERISTICS SYMBOL CONDITIONS MIN TYP MAX UNIT 1.95 2.00 2.05 V Oscillator Section RT Reference Voltage VRT IRT=100uA RT Short to GND Current ISCRT PIN3=0V 1 2 - mA RT Reference Line Regulation DVRT1 Vcc=12V~20V -6 0.1 6 mV RT Reference Load Regulation DVRT2 Io=100uA~500uA -12 -0.1 12 mV Soft Start Output Frequency FPHT11 PIN1=0V,Rphf=33KΩ, CT=470pF, RT=20KΩ 61 68 75 KHz Operating Frequency NOTE FOSC1 PIN1=5V, Rphf=33KΩ, CT=470pF, RT=20KΩ 43 46 49 kHz Frequency Variation With Vcc DVFSC1 - 0.01 - % 1.15 1.75 2.35 us Dead Time TD Vcc=14V~24V PIN1=5V, Rphf=33KΩ, CT=470pF, RT=20KΩ Output Section Output High Voltage 11 VOH11 Io = -10mA 11 12 13 V Output High Voltage 12 VOH12 Io = -100mA 10.5 11.5 12.5 V Output Low Voltage 21 VOL21 Io = 10mA 0 0.05 0.4 V Output Low Voltage 22 VOL22 Io = 100mA 0.05 0.4 1.2 V Output Maximum Voltage VHOMAX Vcc=20V, No Load 11 14 17 V Output Voltage with UVLO activated VUV Vcc=5V, Io=100uA - 0.6 1 V * NOTE : FOSC (Operating Frequency) is the half of Oscillator Frequency. September. 2003 http://www.interpionsemi.com -4- IP3101 Versatile Gate Driver APPLICATION INFORMATIONS 1. Calculation for VPHT The VPHT is voltage of pin 1. The preheating time is decided by this voltage. 44000 R PHF V PHT = + 0 . 05 Where, RPHF is the value of resistor which is connected to pin 4. 2. Calculation for TPH The TPH is preheating time, from preheating frequency to normal operating frequency. When the voltage of pin 1 reach to the VPHT, the preheating will be completed. TPH = CPHT ´VPHT 0.9 ×10-6 Where, CPHT is the value of capacitor which is connected to pin 1. 3. Calculation for fSW The fSW is normal operating frequency. f SW @ 1 2.2 × RT CT Where, CT & RT are the value of capacitor & resistor which are connected to pin 2 & pin 3. 4. Calculation for fPRH The fPRH is preheating frequency. f PRH @ September. 2003 R T + R PHF 2 . 5 × R T C T R PHF http://www.interpionsemi.com -5- IP3101 Versatile Gate Driver OPERATION TIMING CHART September. 2003 http://www.interpionsemi.com -6- IP3101 Versatile Gate Driver TEST CIRCUITS TYPICAL APPLICATION CIRCUITS September. 2003 http://www.interpionsemi.com -7- IP3101 Versatile Gate Driver PACKAGE DIMENSIONS September. 2003 http://www.interpionsemi.com -8- IP3101 Versatile Gate Driver PACKAGE DIMENSIONS September. 2003 http://www.interpionsemi.com -9-