KIA3502P

SEMICONDUCTOR TECHNICAL DATA Simple Ballast Controller KIA3502P BIPOLAR LINEAR INTEGRATED CIRCUIT DESCRIPTIONS. The KIA3502 provides simple and high performance control functions for the half vridge 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. preheating time, preheating frequency, operating frequency and ignition time can be controlled. separately using external capacitors and resistor. no lamps protection or any required protection like over current protection can be realized an external small signal transistor. FEATURES. ・Internal Soft-Start ・Programmable Preheating Frequency ・Programmable Preheating Time ・Programmable Ignition Time ・Very Precision Internal Operating Frequency(±5%) ・No Lamp Protection or Over Current Protection ・Built-in Temperature Compensation Circuit ・Built-in Surge Protection Circuit ・Built-in UVLO Circuit ・Precision Internal Reference Voltage ・DIP-8, FLP-8 Package INTERNAL CIRCUIT BLOCK. 2011. 6. 8 Revision No : 0 1/9 KIA3502P Fig1. PIN CONNECTIONS PIN DESCRIPTIONS NO 1 2 3 4 5 6 7 8 SYMBOL CIGN CT RPHF CPH GND LO HO VCC I/O I I I I O O DESCRIPTION Ignition Time Control Pin with external Capacitor Internal Oscillator Timing Control Pin with Capacitor Preheating Frequency Control Pin with external Resistor Preheating Time Control Pin with external Capacitor Ground Low Side Gate Drive Output High Side Gate Drive Output Supply Voltage ABSOLUTE MAXIMUM RATINGS CHARACTERISTICS Maximum Supply Voltage Maximum Operating Supply Voltage Totem-pole Output Peak Current Power Dissipation(8DIP) PIN1,2,3,4, Voltage Output Clamp Diode Current Operating Junction Temperature Storage Temperature SYMBOL VCCMAX VOPMAX IPEAK Pd VIN ICLAMP Tj Tstg VALUE 30 24 ±1 800 -0.4 ~ 6 30 -25~125 -55~150 UNIT V V A mW V mA 2011. 6. 8 Revision No : 0 2/9 KIA3502P ELECTRICAL CHARACTERISTICS (Ta=25℃, VCC=14V, fosc=47KHz, unless otherwise specified.) CHARACTERISTIC Total Supply Current Section Start-up Current Quiescent Current Operating Supply Current Under Voltage Lock Output Section Vcc Tum-On Voltage UVLO Hysteresis Voltage Oscillator Section Operating Frequency Output Delay Time Preheating Frequency Output Preheating Delay Time Preheating Section (Pin3, Pin4) Pin4(CPH) Threshold Voltage Pin4(CPH) Charging Current Pin4(CPH) High Clamp Voltage Pin3(PHF)Reference Voltage Pin3(PHF) Reference Voltage Line Regulation Pin3(PHF) Reference Voltage Load Regulation VPH IPH VPHT(H) VPHF DVPHF1 DVPHF2 PIN4 Voltage Increasing, Rphf=27K Pin4=0V Pin4=Open IPHF=-100uA Vcc=14~20V Io=-50uA ~ -200uA 1.8 -1.9 3.2 1.95 -6 -12 2.0 -1.6 3.7 2.00 0.1 -0.1 2.2 -1.3 4.2 2.05 6 12 V uA V V mV mV fop Td fph Tpd CT = 220pF PIN1=PIN4=3V PIN4=0V, Rphf=27K PIN4=0V 42 1 66 0.6 47 1.75 78 1 52 2.35 90 1.4 KHz uS KHz uS VCCON HYS Vcc Increasing 9 1.5 10 2 11 2.5 V V IST IQ ICC Vcc=9V Not Switching fosc=47KHz, Co=1nF 3 4 125 7.5 9 250 12 14 uA mA mA SYMBOL CONDITIONS MIN. TYP. MAX. UNIT ELECTRICAL CHARACTERISTICS (Continued) (Ta=25℃, VCC=14V, fosc=47KHz, unless otherwise specified.) CHARACTERISTIC Ignition Section (Pin1) Pin1(CIGN) Threshold Voltage Pin1(CIGN) Charging Current Pin1(CIGN) High Clamp Voltage Output Section Output High Voltage Output Low Voltage Output Maximum Voltage Output Voltage With UVLO Activated Thermal Shut Down Protection Thermal Shut Down Thermal Shut Down Hysteresis (Note2) (Note3) Ttsd Thys 175 20 VOH VOL VHOMAX VUV Io=-100mA Io=100mA Vcc=20V, No Load Vcc=5V, Io=100uA 11 13 12 0.9 15 0.2 1.4 17 1 V V V V VIGN IIGN VIGN(H) PIN4 Voltage Increasing, Rphf=27K Pin4=0V Pin4=Open 1.8 -14 3.8 2.0 -11 4.3 2.2 -8 4.8 V uA V SYMBOL CONDITIONS MIN. TYP. MAX. UNIT * Note 1 : Output frequency is half of the internal oscillator frequency. * Note 2, Note 3 : This characteristics can be guaranteed but not tested in final test step. 2011. 6. 8 Revision No : 0 3/9 KIA3502P Fig2. OPERATING TIMING CHART fph : Preheating Frequency (Rph) fop : Operating Frequency(CT) Tph : Preheating Time (Cph) Tign : Ignition Time (Cign) 2011. 6. 8 Revision No : 0 4/9 KIA3502P Fig3. APPLICATION INFORMATIONS 1. Operating frequcncy Charging_time : Tchg= CT × Vchg_pp Ichg CT × Vchg_pp Ichg CT : Pin2 Capacitor Vchg_pp : Amplitude of the Internal oscillator Ichg : Charging current (Internally fixed) Idis : Discharging current (Internally) Discharging_time : Tchg= Tatal_period : T = Tchg+Tdis 1 1 1 1 × =× 2 2 Total_Period Tchg+Tolis Operating_Frequcncy(fo)= Final formula -5 Frequency : fo=(10.35×10 ) × Example) CT=220pF ∴fo=10.35×10 × -6 1 CT 1 = 47KHz 220×10 -12 2. Preheating frequency PreheatingCharging_time : Tchg_ph = CT × Vchg_pp Ichg CT × Vchg_pp Vchg_ph_pp Idis_ph CT : Pin2 Capacitor Vchg_pp : Amplitude of the Internal oscillator (When preheation) Ichg : Charging current (Internally fixed When preheating) Idis : Discharging current (Internally When preheating) PreheatingDischarging_time : Tdis_ph = PreheatingTotal_period : Tph = Tchg_ph+Tdis_ph PreheatingFrequency(fph) = 1 1 1 1 × =× 2 2 PreheatingTotal_Period Tchg_ph+Tdis_ph Final formula 2.0 1 ) × (78uA+ CT Rph ∴fph =0.1375× Example) CT=220pF, Rph=27K ohm ∴fo=0.1375× 2.0 1 2.0 1 ) =0.1375× ) =95KHz × (78×10 + × (78×10 + CT Rph 27×10 220×10 -6 -6 -12 3 2011. 6. 8 Revision No : 0 5/9 KIA3502P APPLICATION INFORMATIONS (Continued) 3. Preheating Time Preheating_Time : Tph= Cph × Vph Iph 6 CT : Pin2 Capacitor Vph : Constant Voltage (Internally fixed) Iph : Constant current (Internally fixed) Preheating_Time : Tph= 1.25×10 ×Cph Example) Cph=0.33uF ∴Tph = 1.25 ×10 ×0.33×10 = 413ms 6 -6 4. Ignition Time Cign × Vign Ignition_Time : Tign= Iign 3 Cign : Pin1 Capacitor Vign : Constant Voltage (Internally fixed) Iign : Constant current (Internally fixed) Ignition_Time : Tign = 0.182×10 ×Cign Example) Cign=47nF ∴Tign = 0.182 ×10 ×47×10 = 8.5ms 6 -9 2011. 6. 8 Revision No : 0 6/9 KIA3502P Fig4. TEST CIRCUIT 2011. 6. 8 Revision No : 0 7/9 KIA3502P Fig5. TYPICAL APPLICATION CIRCUIT Cign : Ignition Timing Capacitor CT : Oscillator timing Capacitor Rph : Pre-heating timing Resistor Cph : pre-heating timing Capacitor 2011. 6. 8 Revision No : 0 8/9 KIA3502P 2011. 6. 8 Revision No : 0 9/9