TEA1024 Просмотр технического описания (PDF) - Temic Semiconductors
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производитель
TEA1024 Datasheet PDF : 8 Pages
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TEA1024/ TEA1124
10.00
1.00
Vmains = 230 V∼
0.10
0.01
10
96 11939
IL ( mA)
200
100
50
100
1000
P(W)
10000
Figure 6.
2.5
X VMains=230V
2
1.5
1
0.5
0
0 200 400 600 800 1000
95 11
tp ( ms )
Figure 7.
Supply Voltage
Due to higher trigger sensitivity of the triac it is supplied
with negative signal. It can be supplied via diode and
series resistance from the negative half wave of the mains.
An internal parallel controller limits the voltage between
Pin 5 and 7 to a typical value of 6.55 V.
Dimensioning of the Series Resistance
R1 (Figures 8, 9)
+ W R1max
0.85
VMmin – VSmax
2 Itot
–65
+ ) ) Itot IS IP IX
+ P(R1)
(VM – VS)2
2 R1
VM = Mains supply
VS = Limiting voltage of the IC
Itot = Total current requirement
Ix = Current requirement for external circuit
50
40
X VMains=230V
30
20
10
0
0
95 10114
3
6
9
Itot ( mA )
Figure 8.
12
15
Ignition (Firing) Current
The necessary ignition current depends on the specified
triac. With the help of a resistance, it is possible to limit
its value:
W [ W RGmax [ ]
5.7
V
I
– VGmax
Gmax
–25
+ Ip [A]
IGmax
T
tp
whereas VG[V]= Gate voltage of the triac
IG[A]= Max. gate current
IP[A] = Average gate current requirement
tP[s] = Ignition pulse width
T[s] = Duration (of mains frequency)
6
5
4
3
2
1
0
0
95 10116
X VMains=230V
3
6
9
Itot ( mA )
Figure 9.
12
15
4 (8)
TELEFUNKEN Semiconductors
Rev. A1, 24-May-96
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