Daewoo CP-520, Руководство по обслуживанию, Страница: 28 / 85

CP-520/520A/520F Service Manual
DTV R&D Europe 27
4.3 TDA8358J VERTICAL AMPLIFIER
The TDA8358J are power circuit for use in 90° and 110° colour deflection systems for field
frequencies of 25 to 200Hz field frequencies, and for 4:3 and 16/9 picture tubes. The IC contains
a vertical deflection output circuit, operating as a high efficiency class G system. The full bridge
output circuit allows DC coupling of the deflection coil in combination with single positive supply
voltages.
The east-west output stage is able to supply the sink current for a diode modulator circuit.
The IC is constructed in a Low Voltage DMOS(LVDMOS) process that combines bipolar, CMOS
and DMOS devices. DMOS transistors are used in the output stage because of the absence of
second breakdown.
4.3.1 TDA8358J
Features :
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Few external components
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Highly efficient fully DC-coupled vertical bridge output circuit
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Vertical flyback switch with short rise and fal times
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Built-in guard circuit
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Thermal protection circuit
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Improved EMC performance due to differential inputs
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East-west output stage