FLC01-200x ® Application Specific Discretes A.S.D.™ FIRE LIGHTER CIRCUIT FEATURES ■ ■ ■ ■ Dedicated thyristor structure for capacitance discharge ignition operation High pulse current capability 190A @ tp = 10µs Fast turn-on operation Designed for high ambient temperature (up to 120°C) TAB TAB 2 3 1 2 1 BENEFITS ■ ■ 3 Space saving thanks to monolithic function integration High reliability with planar technology IPAK FLC01-200H DPAK FLC01-200B DESCRIPTION The FLC01 series has been especially developed for capacitance discharge operation. The main applications are gas lighters or ignitors such as cookers / gas boilers / gas hobs... Based on ST’s ASD™ technology, it provides a fully integrated function, with high performance and reliability levels, adapted to severe and hot temperature environment. Th: Thyristor for switching operation. Z: Zener diode to set the threshold voltage. D: Diode for reverse conduction. R: 2 kΩ resistor. FUNCTIONAL DIAGRAM pin 2 Z Th D R pin 1 * pin 3 non connected April 2002 Ed: 6C 1/8 FLC01-200x ABSOLUTE RATINGS (limiting values) Symbol Parameter ITRM Repetitive surge peak on state current for thyristor -30°C ≤ Tamb ≤ 120°C IFRM Repetitive surge peak on state current for diode -30°C ≤ Tamb ≤ 120°C dI/dt Critical rate of rise time on state current -30°C ≤ Tamb ≤ 120°C Tstg Tj Storage junction temperature range Maximum junction temperature Toper TL Value Unit 190 A 120 A/µs - 40 to + 150 + 125 °C -30 + 120 °C 260 °C tp = 10µs ( note 1) Operating temperature range Maximum lead temperature for soldering during 10s Note 1 : Test current waveform 10µs 200ms THERMAL RESISTANCE Symbol Rth(j-a) Parameter Thermal resistance junction to ambient Value Unit 100 °C/W ORDERING INFORMATION FLC 01 - 200 x (-TR) PACKING MODE: Blank: Tube -TR: Tape & reel 200: VRM = 200V FIRE LIGHTER CIRCUIT CIRCUIT NUMBER: 01 = SCR + diode + Zener + Resistance (pin 3 not connected) 2/8 PACKAGE: H: IPAK B: DPAK FLC01-200x ELECTRICAL CHARACTERISTICS Symbol I IF Parameters VRM Stand-off voltage VBO Breakover voltage VT On-state voltage VF Diode forward voltage drop IRM IBO Breakover current I BO IRM Leakage current αT Temperature coefficient for VBO V BO VRM V T VF V IT DIODE (D) PARAMETER Symbol Test Conditions VF tp ≤ 500µs IF = 2A Tj = 25°C Max. Value Unit 1.7 V THYRISTOR (Th) and ZENER (Z) PARAMETERS Symbol Test conditions IRM VRM = 200 V Min. Max. Unit Tj = 25°C 1 µA Tj = 125°C 10 µA 233 V VBO at IBO Tj = 25°C IBO at VBO Tj = 25°C 0.5 mA VT IT = 2A Tj = 25°C 1.7 V tp ≤ 500µs αT 206 Typ. 220 0.27 V/°C Fig. 1: Relative variation of breakover current versus junction temperature. k = IBO(Tj) / IBO(25°C) 2.5 2 1.5 1 0.5 0 -20 0 20 40 60 80 100 Tj (°C) 3/8 FLC01-200x Fig. 2: BASIC APPLICATION Ic Ic t Rs c Ds Th Z AC MAINS D R FLC01-200x The applications of the lighter using the capacitance discharge topology operate in 2 phases : PHASE 1 The energy coming from the mains is stored into the capacitor C. For that, the AC voltage is rectified by the diode Ds. PHASE 2 At the end of the phase 1, the voltage across the capacitor C reaches the avalanche threshold of the zener. Then a current flows through the gate of the thyristor Th which fires. The firing of the thyristor causes an alternating current to flow through the capacitor C. The positive parts of this current flow through C, Th and the primary of the HV transformer. The negative parts of the current flow through C, D and the primaty of the HV transformer. RS RESISTOR CALCULATION The Rs resistor allows, in addition with the capacitor C, the spark frequency to be adjusted and the current from the mains to be limited. Its value shall allow the thyristor Th to fire even in the worst case. In this case the system must fire with the lower RMS mains voltage value while the breakdown voltage and current of the FLC are at the maximum. The maximum Rs value is equal to : Rs max = (V AC min. 2 ) − [V BO max .(1 + α T .( Tamb − 25 ))] k . I BO * * : see fig 1 4/8 FLC01-200x Fig. 3: Spark frequency versus Rs and C F (Hz) Vac=220Vrms, Vbo=225V, Tamb=25°C 20 C=0 .47µ F C=1 10 µF C=1 C=2 .2µF C=2 .7µF 5 .5µF C=3 .3µF 3 2 1 4.7 6.8 10 12 Rs (k Ω ) The couple Rs/C can be chosen with the previous curve. Keep in mind the Rs maximum limit for which the system would not work when the AC 15 18 22 27 30 mains is minimum. The next curve shows the behavior with Rs=15kΩ and C=1µF. Fig. 4: Voltage across the capacitance with Rs = 15kΩ, C = 1µF and VBO = 225V. 5/8 FLC01-200x PEAK CURRENT LIMIT This component is designed to withstand ITRM = 190A for a pulse duration of 10µs for an ambient temperature of 120°C in repetitive surge. The curve of peak current versus the pulse duration allows us to verify if the application is within the FLC operating limit. Fig. 5: Peak current limit ITRM(A) 250 Tj max=120°C 200 150 100 50 5.0 7.5 10.0 tp (µs) POWER LOSSES (For 10µs, see note 1) To evaluate the power losses, please use the following equations : For the thyristor : P = 1.18 x IT(AV) + 0.035 I2T(RMS) For the diode : P = 0.67 x IF(AV) + 0.106 I2F(RMS) 6/8 12.5 15.0 FLC01-200x PACKAGE MECHANICAL DATA DPAK REF. A A1 A2 B B2 C C2 D E G H L2 L4 V2 DIMENSIONS Millimeters Inches Min. Max Min. Max. 2.20 2.40 0.086 0.094 0.90 1.10 0.035 0.043 0.03 0.23 0.001 0.009 0.64 0.90 0.025 0.035 5.20 5.40 0.204 0.212 0.45 0.60 0.017 0.023 0.48 0.60 0.018 0.023 6.00 6.20 0.236 0.244 6.40 6.60 0.251 0.259 4.40 4.60 0.173 0.181 9.35 10.10 0.368 0.397 0.80 typ. 0.031 typ. 0.60 1.00 0.023 0.039 0° 8° 0° 8° FOOTPRINT (in millimeters) 6.7 6.7 3 3 1.6 1.6 2.3 2.3 7/8 FLC01-200x PACKAGE MECHANICAL DATA IPAK DIMENSIONS Millimeters Inches Min. Typ. Max. Min. Typ. 2.2 2.4 0.086 0.9 1.1 0.035 0.7 1.3 0.027 0.64 0.9 0.025 5.2 5.4 0.204 0.85 0.3 0.035 0.95 0.45 0.6 0.017 0.48 0.6 0.019 6 6.2 0.236 6.4 6.6 0.252 4.4 4.6 0.173 15.9 16.3 0.626 9 9.4 0.354 0.8 1.2 0.031 0.8 1 0.031 10° 10° REF. A E C2 B2 L2 D H L L1 B3 B6 A1 B V1 B5 C G A3 A A1 A3 B B2 B3 B5 B6 C C2 D E G H L L1 L2 V1 Max. 0.094 0.043 0.051 0.035 0.212 0.033 0.037 0.023 0.023 0.244 0.260 0.181 0.641 0.370 0.047 0.039 OTHER INFORMATION Type Marking Package Weight Base qty Delivery mode FLC01-200H FLC01-200H IPAK 0.40 g 75 Tube FLC01-200B FLC01-200B DPAK 0.40 g 75 Tube FLC01-200B-TR FLC01-200B DPAK 0.40 g 2500 Tape & reel Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 2002 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 8/8