STMicroelectronics-FLC10-200B
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FLC10
Fire lighter circuit
Datasheet
−
production data
Description
The FLC10 series has been especially developed
for high power capacitance discharge operation.
The main applications are gas lighters or ignitors
such as cookers / gas boilers / gas hobs…
TAB
TAB
It provides a fully integrated function, with high
performance and reliability levels, adapted to
severe and hot temperature environment.
1
2
1
–
Th:
Thyristor for switching operation
–
Z:
Zener diode to set the threshold voltage
–
D:
Diode for reverse conduction
–
R:
2 k
Ω
resistor
2
3
3
IPAK
DPAK
Figure 1. Functional diagram
Features
pin 2 (or tab)
•
Dedicated thyristor structure for capacitance
discharge ignition operation
•
High pulse current capability:
– 240
A at t
= 10 µs
p
Z
•
•
Fast turn-on operation
Designed for high ambient temperature
(up to 120° C)
Th
D
Benefits
R
•
Space saving thanks to monolithic function
integration
•
High reliability with planar technology
pin 1/3 *
* Pin1 and pin3 must be shorted together
in the application circuit layout
June 2014
DocID5202 Rev 8
1/11
This is information on a product in full production.
11
Characteristics
FLC10
1
Characteristics
Table 1. Absolute ratings (limiting values)
Parameter
Symbol
Value
Unit
Repetitive surge peak on state current for
I
I
thyristor
-30° C
≤
T
TRM
p
≤
120° C
amb
240
200
A
Repetitive surge peak on state current for diode
-30° C
≤
T
≤
120° C
FRM
amb
dl/dt
Critical rate of rise time on state current -30° C
≤
T
≤
120° C
A/µs
° C
amb
T
Storage junction temperature range
Maximum junction temperature
– 40 to + 150
+ 125
stg
T
j
T
Operating temperature range
– 30 to + 120
260
° C
° C
oper
T
Maximum lead temperature for soldering during 10s
L
Table 2. Thermal resistance
Symbol
Parameter
Value
Min.
R
R
I
P
AK thermal resistance junction to ambient
100
70
° C/W
° C/W
th(j-a)
th(j-a)
DPAK thermal resistance junction to ambient S = 0.5 cm²
Figure 2. Electrical characteristics (definitions)
I
I
F
Symbol =
Parmeter
V
V
V
V
I
= Stand-off
voltage
Breakover voltage
= On-state
voltage
= Diode
forward drop
= Breakover
current
RM
BO
T
=
V
V
V
F
T
BO
V
V
RM
F
I
I
RM
BO
I
=
Leakage current
RM
BO
T
ꢀ
T
=
T
e
mperature
coefficient for V
BO
I
Table 3. Electrical characteristics: diode (D) parameter
Test Conditions
Symbol
Value
Unit
V
I
F
= 2 A
t
p
≤
500 µs
T = 25° C
MAX
1.7
V
F
j
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DocID5202 Rev 8
FLC10
Characteristics
Table 4. Electrical characteristics: Thyristor (Th) and Zener (Z) parameters
Symbol
Test Conditions
Min.
Typ.
Max
Unit
T =
25° C
1
µA
µA
V
j
I
V
= 200 V
RM
RM
T =
125° C
100
250
0.5
1.7
j
V
at I
T =
25° C
200
225
13
BO
BO
j
I
at V
T =
25° C
mA
V
BO
BO
j
V
I =
2 A, t
≤
500 µs
T =
25° C
T
T
p
j
-4
⍺
T
Figure 3. Test current waveform
10 /°
C
Figure 4. Relative variation of breakover current
versus junction temperature
k = I
BO
(Tj) / I
BO
(25°C)
2.5
2
1.5
1
10µs
0.5
0
200ms
-20
0
20
40
60
80
100
Tj (°C)
Figure 5. Basic application
Ic
Ic
t
c
Rs
Ds
Th
Z
AC
MAINS
D
R
FLC10-200x
DocID5202 Rev 8
3/11
Characteristics
FLC10
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 primary 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:
(V
A
C
min
⋅
2)
–
[
V
BO
max
⋅ (
1 +
α
T
⋅ (
T
amb
–
2
5
)
)]
—————————————————————————————————————————————-
Rsmax
=
k
⋅
I
B
O
(
1
)
Figure 6. Spark frequency versus RS and C
F (Hz)
Vac=220Vrms, Vbo=225
V
, T
a
mb=25°C
20
10
5
3
2
1
4.7
6.8
10
12
15
18
22
27 30
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
4/11
DocID5202 Rev 8
FLC10
Characteristics
mains is minimum.
The next curve on the next page shows the behavior with RS = 15 k
Ω
and C = 1 µ
F
.
Figure 7. Voltage across the capacitance with Rs = Rs 15 k
Ω
, C = 1 µF and V
= 225 V
BO
Peak current limit
This component is designed to withstand I
= 190 A for a pulse duration of 10 µs for an
TRM
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.
Figure 8. Peak current limit versus pulse duration
ITRM(A)
250
Tj max=120°C
200
150
100
50
5.0
7.5
10.0
12.5
15.0
tp (µs)
To
e
valuate the power losses, please use the following equations:
2
–
–
For the thyristor: P = 1.18 x I
+ 0.035 I
T(
A
V
)
T(RMS)
2
For the diode: P = 0.67 x I
+ 0.106 I
F(
A
V)
F(RMS)
DocID5202 Rev 8
5/11
Package information
FLC10
2
Package information
•
•
•
Epoxy meets UL94, V0
Lead-free package
Recommended torque: 0.4 to 0.6 N·m
In order to meet environmental requirements, ST offers these devices in different grades of
®
®
ECOPACK packages,
depending on their level of environmental compliance. ECOPACK
®
ECOPACK is
an ST trademark.
Figure 9. DPAK dimension definitions
A
E
b4
c2
E1
L2
D1
D
A1
H
E1
L4
b
e1
c
V2
L
A2
Note:
This package drawing may slightly differ from the physical package. However, all the
specified dimensions are guaranteed.
6/11
DocID5202 Rev 8
FLC10
Package information
Table 5. DPAK dimension values
Dimensions
Ref.
Millimeters
Typ.
Inches
Min.
Max.
Min.
Typ.
Max.
A
A1
A2
b
2.18
0.90
0.03
0.64
4.95
0.46
0.46
5.97
5.10
6.35
2.40
1.10
0.23
0.90
5.46
0.61
0.60
6.22
0.086
0.035
0.001
0.025
0.195
0.018
0.018
0.235
0.201
0.250
0.094
0.043
0.009
0.035
0.215
0.024
0.023
0.244
b4
c
c2
D
D1
E
6.73
0.264
E1
e1
H
4.32
0.170
4.40
9.35
1.00
4.70
10.40
1.78
1.27
1.02
8°
0.173
0.368
0.039
0.185
0.409
0.070
0.05
L
L2
L4
V2
0.60
0°
0.023
0°
0.040
8°
Figure 10. Footprint (dimensions in mm)
6.7
3.0
3.0
A
5.094
6.7
B
1.6
The device must be positioned within
0.05 A
B
DocID5202 Rev 8
7/11
Package information
FLC10
Figure 11. IPAK dimension definitions
E
b4
A
c2
V1
L2
D
L
C
L1
H
A1
b2
e
b
e1
c
Note:
This package drawing may slightly differ from the physical package. However, all the
specified dimensions are guaranteed.
8/11
DocID5202 Rev 8
FLC10
Package information
Table 6. IPAK dimension values
Dimensions
Ref.
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
A1
b
2.20
0.90
0.64
2.40
1.10
0.90
0.95
5.43
0.60
0.60
6.20
6.70
0.086
0.035
0.025
0.094
0.043
0.035
0.037
0.213
0.023
0.023
0.244
0.263
b2
b4
c
5.20
0.45
0.46
6
0.204
0.017
0.018
0.236
0.252
c2
D
E
6.40
e
2.28
0.090
0.634
e1
H
4.40
4.60
0.173
0.181
16.10
L
9
9.60
1.20
1.25
0.354
0.031
0.377
0.047
0.049
L1
L2
V1
0.8
0.80
10°
0.031
10°
DocID5202 Rev 8
9/11
Ordering information
FLC10
3
Ordering information
Figure 12. Order information scheme
FLC 10
– 200
x y
Fire Lighter Circuit
Circuit number
10 = thyristor + diode + zener + resistance
(high power version)
Stand-off voltage
200 = 200 V
Package
H = I
P
A
K
B = D
P
A
K
Packing mode
Blanck =
T
u
be
T
a
ble 7. Ordering information
Order code
Marking
Package
Weight
Base qty
Delivery mode
FLC10-200H
FLC10-200B
FLC01-200H
FLC01-200B
IPAK
0.4 g
0.3 g
75
75
Tube
DPAK
T
a
pe and reel
4
Revision history
Table 8. Document revision history
Changes
Date
Revision
Sept-2001
7
First issue.
Updated DPAK and IPAK package information and reformatted to
current standard.
04-Jun-2014
8
10/11
DocID5202 Rev 8
FLC10
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