器件名称: TEA1007
功能描述: Simple Phase Control Circuit
文件大小: 124.28KB 共8页
简 介:TEA1007
Simple Phase Control Circuit
Description
Integrated circuit, TEA1007, is designed as a general phase control circuit in bipolar technology. It has an internal supply voltage limitation. With typical 150 mA ignition pulse, it is possible to determine the phase-shift of the ignition point by comparing the mains sync. ramp voltage with a preset required value. It generates a single ignition pulse per half wave; therefore, it is suitable for capacitive and inductive loads in low cost applications.
Features
D Current consumption
v 2.5 mA
D Internal supply voltage control
Package: DIP8
D Ignition pulse typ. 150 mA D Voltage and current synchronization
TELEFUNKEN Semiconductors Rev. A1, 28-May-96
Ad ro nic C
Rv = series resistance
om po ne
Figure 1. Block diagram with typical circuitry
Block Diagram
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1 (8)
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TEA1007
General Description
The phase-shift of the ignition point is determined in the usual manner by comparison between a mains synchronized ramp voltage and a predetermined required value. The capacitor C/t between Pin 7 and the common reference point Pin 8 is discharged at the zero transition of the mains voltage via the Vo detector, gate G2 and switch S2. After the end of the zero transition pulse, C/t is charged from the constant current source I, whose value is adjusted externally with R at Pin 3 due to the unavoidable tolerance of C/t (Phase 1). When the potential at Pin 7 reaches the nominal value predetermined at Pin 6, the thyristor Th1, w……
