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TEA1024

TEMIC Semiconductors
Part Number TEA1024
Manufacturer TEMIC Semiconductors
Description Zero Voltage Switch
Published Apr 16, 2005
Detailed Description TEA1024/ TEA1124 Zero Voltage Switch with Fixed Ramp Description The monolithic integrated bipolar circuit, TEA1024/ TEA...
Datasheet PDF File TEA1024 PDF File

TEA1024
TEA1024

Overview
TEA1024/ TEA1124 Zero Voltage Switch with Fixed Ramp Description The monolithic integrated bipolar circuit, TEA1024/ TEA1124 is a zero voltage switch for triac control in domestic equipments.
It offers not only the control of a triac in zero crossing mode but also the possibility of power control.
This is why the IC contains a mains synchronized ramp generator with 640 ms (1280 ms) duration (50 Hz).
It is suitable for a typical load of 750 W (1000 W) meeting the Flicker Standard.
(values in brackets relate to TEA1124.
) Features D D D D D D Direct supply from the mains Definite IC switching characteristics Very few external components Full wave drive – no dc component in the load circuit Current consumption ≤ 1.
5 mA Output short circuit protected Package: DIP8 D D D D Simple power control Integrated ramp generator Reference voltage variable by external resistance Pulse position optimization Block Diagram 95 10871 D1 390 kW R2 (Rsync) R1 1N4007 22 kW/ 2W Load 1000 W L 7 1 56 kW Ramp generator TEA 1024 – 640 ms TEA 1124 – 1280 ms 4 6 C1 100 mF 16 V TIC 236N V M= 230 V ~ Sync.
logic Supply MT2 MT1 Comparator Protection min.
100 kW max.
2 43 kW NC + – 3 NC 8 Pulse amplifier 5 RG 68 W N Figure 1.
Typical block diagram – open loop power control TELEFUNKEN Semiconductors Rev.
A1, 24-May-96 1 (8) TEA1024/ TEA1124 Power Supply and its Limitations The voltage limitation contained in the IC allows it to be powered from mains via series resistance R1 and recti– fying diode D1 between Pin 6 (+ Pol/ ) and Pin 4 (–VS).
The capacitor C1 smooths the supply voltage (see figure 1).
Full-Wave Logic The full-wave logic ensures that only pairs of pulses can be released, and that these always begin with the positive dv/dt.
The load is thus switched on for a minimum of one complete mains cycle.
This means that the triac receives a minimum of two driving pulses, so that the unwanted d.
c.
component in the load circuit is definitely eliminated.
ă An internal temperatu...


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