TDA8172 Datasheet, PDF (4/5 Pages) STMicroelectronics – TV VERTICAL DEFLECTION OUTPUT CIRCUIT

TDA8172
Figure 2 : AC Test Circuit
1 N4 0 0 1
V_S
C1
C2
C3
0.1µF
470µF
D1
220µF
t _fly
2
63
V_REF
7
Iy
V₇
GND
V_i
R1
1
to
1 0kΩ
RT1 _4.7kΩ
TDA8 1 7 2
4
5
C4
0.22µF
to
Ly
24.6mH
R7
R6
1 .5 Ω
330Ω
Ry
R3
R4
9.6Ω
IN
1 2 kΩ
C6
8 .2 kΩ
R2
4.7µF
C5
5 .6 kΩ
2200µF
R 5 Iy
*^{Re comme nde d for V}REF ^filtering
R5
to
8.2Ω
MOUNTING INSTRUCTIONS
The power dissipated in the circuit must be re-
moved by adding an external heatsink.
Thanks to the HEPTAWATT^TM package attaching
the heatsink is very simple, a screw or a compres-
sion spring (clip) being sufficient.
Figure 3 : Mounting Examples
Between the heatsink and the package it is better
to insert a layer of silicon grease, to optimize the
thermal contact ; no electrical isolation is needed
between the two surfaces, since the tab is con-
nected to Pin 4 which is ground.
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