STMicroelectronics FLC01-200H Fire lighter circuit Datasheet

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.
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