FLC10-200H ,FIRE LIGHTER CIRCUIT applications are gas lighters or ignitorssuch as :cookers / gas boilers / gas hobs...Based on ST’s ..
FLC21-135A ,LOW POWER FIRE LIGHTER CIRCUITapplications are: fuel ignitors, fuel or gas heaters,gas ranges, cooker tops, barbecues, waterRheat ..
FLC21-135A ,LOW POWER FIRE LIGHTER CIRCUITFEATURESn DEDICATED THYRISTOR STRUCTURE FORCAPACITIVE DISCHARGE IGNITIONOPERATIONn HIGH PULSE CURRE ..
FLI2301 , Digital Video Format Converter
FLI2301 , Digital Video Format Converter
FLI2301 , Digital Video Format Converter
FT500A , Phase Control SCR 400 Amperes Avg 800-2500 Volts
FT5754M ,Silicon Darlington Transistor Array.
FUJITSU hT00El..ECTR0NICii 31.1: 1) = 371111752 001.50% 3 IFNI
d) T0345
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FT5754M. ,Silicon Darlington Transistor Array.
FUJITSU hT00El..ECTR0NICii 31.1: 1) = 371111752 001.50% 3 IFNI
d) T0345
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FT5757M ,Silicon Darlington Transistor Array.
FUJITSU hT00El..ECTR0NICii 31.1: 1) = 371111752 001.50% 3 IFNI
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FT5763M ,Silicon Darlington Transistor ArrayFUJIT'SU M:CR0ELlr(yl'R0NTcS
January 1990
Edition 1.1
BLE I) E: 37H‘17EIE 00151:?”
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FT5764M ,Silicon Darlington Transistor Array.
FUJITSU h1CR0El..ECTR0N1CS
January 1990
Edition 1.1
PRODUCT PROFILE
BLE D a 37H‘17EE ..
FLC10-200H
FIRE LIGHTER CIRCUIT
Application Specific Discretes
A.S.D.™
FLC10-200H/BFIRE LIGHTER CIRCUIT
The FLC10 series has been especially developed
for high power capacitance discharge operation.
The main applications are gas lightersor ignitors
suchas:
cookers/ gas boilers/ gas hobs...
Based on ST’s ASD™ technology,it providesa
fully integrated function, with high performance
and reliability levels, adaptedto severe and hot
temperature environment.
Th: Thyristorfor switching operation.
Zener diodeto set the threshold voltage.
Diodefor reverse conduction.
2kΩ resistor.
DESCRIPTION
FUNCTIONAL DIAGRAM Dedicated thyristor structure for capacitance
discharge ignition operation High pulse current capability
240A@ tp= 10μs Fast turn-on operation Designed for high ambient temperature (upto
120°C)
FEATURES Space saving thanks to monolithic function
integration High reliability with planar technology
BENEFITS
(*) Pin1 and Pin3 must be shorted togetherin
the application circuit layout.
FLC10-200H/B =Copper Surface under Tab
THERMAL RESISTANCE
ORDERING INFORMATION
Note1: Testcurrent waveform
ABSOLUTE RATINGS (limiting values)
200ms
10μs
FLC10-200H/B
ELECTRICAL CHARACTERISTICS
DIODE (D) PARAMETER
THYRISTOR (Th) and ZENER (Z) PARAMETERS-20 0 20 40 60 80 1000
Tj (°C)
k = I (Tj) / I (25°C)BO BO
Fig.1: Relative variationof breakover current
versus junction temperature.
FLC10-200H/B
Fig.2: BASIC APPLICATION
The applicationsof the lighter using the capaci-
tance discharge topology operatein2 phases:
PHASE 1The energy coming from the mainsis stored into
the capacitorC. For that, the AC voltageis rectified the diode Ds.
PHASE 2 the endof the phase1, the voltage across the
capacitorC reaches the avalanche thresholdof
the zener. Thena current flows through the gateof
the thyristorTh which fires.
The firingof the thyristor causes an alternating
currentto flow through the capacitorC.
The positive partsof this current flow throughC, and the primaryof the HV transformer.
The negative partsof the current flow throughC, and the primatyof the HV transformer.
The maximumRs valueis equalto: VV T T BO amb
max ( min. ) [ max.( .( ))]= −+ − 25α: seefig1
COMPONENT CHOICE
RS RESISTOR CALCULATIONTheRs resistor allows,in addition with the capacitorC, the spark frequencytobe adjusted and the cur-
rent from the mainstobe limited.Its value shall allow the thyristorThto fire evenin worst case condi-
tions.In this borderline case, the system must fire with the lowest valueof RMS mains voltage while
the breakdown voltage and currentof the FLC areat the maximum.
FLC10-200H/B
Fig. 4: Voltage across the capacitance with Rs = 15kΩ, C = 1μF and VBO = 225V.
Fig. 3: Spark frequency versus Rs and C
The couple Rs/C canbe chosen with the previous
curve. Keepin mind the Rs maximum limit for
which the system would not work when the AC
mainsis minimum. The next curve shows the be-
havior with Rs=15kΩ and C=1μF.
FLC10-200H/B
Fig. 5: Peak current limit versus pulse duration.
PEAK CURRENT LIMITThis componentis designedto withstand
ITRM= 240A fora pulse durationof 10μs for an
ambient temperatureof 120°Cin repetitive surge
(see note1, page2).
The curveof peak current versus the pulse
duration allows usto verifyif the application within the FLC operating limit.
POWER LOSSES (For 10μs, see note1) evaluate the power losses, please use the following equations:
For the thyristor:P= 1.18x IT(AV)+ 0.035I2 T(RMS)
For the diode:P= 0.67x IF(AV)+ 0.106I2 F(RMS)
