Datasheet FLC10-200B Datasheet (ST)

®

Application Specific Discretes

A.S.D.™

FLC10-200H/B

FIRE LIGHTER CIRCUIT

FEATURES

Dedicated thyristor structure for capacitance

■

discharge ignition operation
High pulse current capability

■

240A @ tp= 10µs
Fast turn-on operation

■

Designed for high ambient temperature (up to

■

120°C)

BENEFITS

Space saving thanks to monolithic function

■

integration
High reliability with planar technology

■

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...

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.

TAB

2

3

1

DPAK

FLC10-200B

FUNCTIONAL DIAGRAM

pin 2 orTab

Z

TAB

FLC10-200H

IPAK

3

2

1

Th: Thyristor for switching operation.
Z: Zener diode to set the threshold voltage.
D: Diode for reverse conduction.
R: 2kΩresistor.

October 2001 - Ed: 7E

Th

D

R

pin 1/3 (*)

(*) Pin1 and Pin3 must be shorted together in
the application circuit layout.

1/8

FLC10-200H/B

ABSOLUTE RATINGS (limiting values)

Symbol Parameter Value Unit

I

TRM

Repetitive surge peak on state current for thyristor

-30°C ≤ T

I

FRM

Repetitive surge peak on state current for diode

-30°C ≤ T
dI/dt
Tstg

Tj

Toper

T

L

Note 1 : Test current waveform

Critical rate of rise time on state current -30°C ≤ T
Storage junction temperature range

Maximum junction temperature
Operating temperature range
Maximum lead temperature for soldering during 10s

10µs

≤ 120°C

amb

≤ 120°C

amb

200ms

amb

tp=10µs

( note 1)

≤ 120°C

240 A

200 A/µs

-40to+150
+ 125

-30 + 120 °C
260 °C

°C

THERMAL RESISTANCE

Symbol Parameter Value Unit

Rth(j-a)
Rth(j-a)

S =CopperSurface under Tab

IPAK thermal resistance junction to ambient
DPAK thermal resistance junction to ambient S = 0.5cm

100 °C/W

2

70 °C/W

ORDERING INFORMATION

FLC 10 - 200 x

Package:H:IPAK

FIRE LIGHTER CIRCUIT

2/8

200:V 20V

CIRCUIT NUMBER
SCR + Diode + Zener + Resistance
High Power Version

BO

min =

B: DPAK

FLC10-200H/B

ELECTRICAL CHARACTERISTICS

Symbol Parameters

V

V

I
I

RM

BO

V
V

BO

RM

αT

T

F

Stand-off voltage
Breakover voltage

On-state voltage
Diode forward voltage drop
Breakover current
Leakage current
Temperature coefficient for V

BO

V

BO

V

RM

I

I

F

V

T

I

RM

I

BO

I

V

F

T

DIODE (D) PARAMETER

Symbol Test Conditions Value Unit

V

F

IF=2A tp≤500µs

Tj = 25°C Max. 1.7 V

THYRISTOR (Th) and ZENER (Z) PARAMETERS

V

Symbol Test conditions Min Typ Max Unit

I

RM

VRM= 200 V

Tj = 25°C 10 µA

Tj = 125°C 100 µA

V

BO

I

BO

V

T

at I

BO

at V

BO

IT=2A tp≤500µs

Tj = 25°C 200 225 250 V
Tj = 25°C 0.5 mA
Tj = 25°C 1.7 V

αT 13 10

Fig. 1: Relative variation of breakover current
versus junction temperature.

k = I (Tj) / I (25°C)BO BO

2.5

2

1.5

1

0.5

-4

/°C

0

-20 0 20 40 60 80 100

Tj (°C)

3/8

FLC10-200H/B

Fig. 2: BASIC APPLICATION

Rs Ds

AC

Ic

Ic

t

c

Th

Z

MAINS

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
thecapacitorC. For that, the ACvoltageis rectified
by the diode Ds.

COMPONENT CHOICE

D

R

PHASE 2

At the end of the phase 1, the voltage across the
capacitor C reaches the avalanche threshold of
the zener. Thenacurrentflowsthroughthegateof
the thyristor Th which fires.
The firing of the thyristor causes an alternating
current to flow through the capacitor C.
The positive partsof this currentflow through C,
Th and the primary of the HV transformer.
The negative parts of the currentflow through C,
D and the primaty of the HV transformer.

RS RESISTOR CALCULATION

TheRsresistorallows, in addition with thecapacitorC,the spark frequency to beadjustedandthe cur­rent from themains to be limited. Its valueshall allow the thyristor Th tofire even in worst case condi­tions. In this borderline case, the system must fire with the lowest value of RMS mains voltage while
the breakdown voltage and current of the FLC are at the maximum.

The maximum Rs value is equal to :

Rs

max

( min. ) [ max .( .( ))]

AC BO amb

=

−+−2125α

kI

.*

BO

VVTT

* : see fig 1

4/8

Fig. 3: Spark frequency versus Rs and C

FLC10-200H/B

F (Hz)

20

10

5

3
2

1

4.7 6.8 10 12 15 18 22 27 30

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

Vac=220Vrms,Vbo=225V, Tamb=25°C

C=0.47 FµC=0.47 Fµ

C=1 FµC=1 Fµ

C=1.5 FµC=1.5 Fµ

C=2.2 Fµ

C=2.7 Fµ

C=3.3 Fµ

Rs (k )Ω

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

FLC10-200H/B

PEAK CURRENT LIMIT

This component is designed towithstand
I

= 240A for a pulse duration of 10µs for an

TRM

ambienttemperatureof 120°C in repetitivesurge
(see note 1, page 2).

Fig. 5: Peak current limit versus pulse duration.

I (A)

TRM

300
280
260
240
220
200

The curve of peak current versus the pulse
duration allows us to verify if the application
is within the FLC operating limit.

Tj max : 120°C

180

6 8 10 12

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 I
For the diode : P =0.67 x I

F(AV)

T(AV)

+ 0.106 I

+ 0.035 I

2

T(RMS)

2

F(RMS)

14

6/8

PACKAGE MECHANICAL DATA

DPAK

FLC10-200H/B

DIMENSIONS

REF.

A 2.20 2.40 0.086 0.094
A1 0.90 1.10 0.035 0.043
A2 0.03 0.23 0.001 0.009

B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.212

C 0.45 0.60 0.017 0.023

C2 0.48 0.60 0.018 0.023

D 6.00 6.20 0.236 0.244

E 6.40 6.60 0.251 0.259

G 4.40 4.60 0.173 0.181

H 9.35 10.10 0.368 0.397
L2 0.80 typ. 0.031 typ.
L4 0.60 1.00 0.023 0.039
V2 0° 8° 0° 8°

Millimeters Inches

Min. Max Min. Max.

FOOTPRINT

6.7

6.7

3

3

1.61.6

2.32.3

7/8

FLC10-200H/B

PACKAGE MECHANICAL DATA

IPAK

E

B2

H

L1

L

B6

G

L2

B3
B

V1

B5

DIMENSIONS

REF.

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 2.2 2.4 0.086 0.094

A1 0.9 1.1 0.035 0.043

A

C2

A3 0.7 1.3 0.027 0.051

B 0.64 0.9 0.025 0.035
B2 5.2 5.4 0.204 0.212
B3 0.85 0.033
B5 0.3 0.035

D

B6 0.95 0.037

C 0.45 0.6 0.017 0.023
C2 0.48 0.6 0.019 0.023

A1

D 6 6.2 0.236 0.244

E 6.4 6.6 0.252 0.260

G 4.4 4.6 0.173 0.181

C
A3

H 15.9 16.3 0.626 0.641

L 9 9.4 0.354 0.370

L1 0.8 1.2 0.031 0.047
L2 0.8 1 0.031 0.039

V1 10° 10°

OTHER INFORMATION

Type Marking Package Weight Base qty Delivery mode

FLC10-200H
FLC10-200B

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change without notice. This publication supersedes and replaces all information previously supplied.
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8/8

FLC10-200H IPAK 0.40g 75 Tube
FLC10-200B DPAK 0.3 g 75 Tube

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