TDA8175
TV VERTICAL DEFLECTION OUTPUT CIRCUIT
..
..
.
POWER AMPLIFIER
FLYBACK GENERATOR
AUTOMATIC PUMPING COMPENSATION
THERMAL PROTECTION
REFERENCE VOLTAGE
DESCRIPTION
The TDA8175 is a monolithic integrated circuit in
HEPTAWATT package. It is a high efficiency power
booster for direct driving of vertical windings of TV
yokes. It is intended for use in Color and B & W
television sets as well as in monitors and displays.
HEPTAWATT
(Plastic Package)
ORDER CODE : TDA8175
PIN CONNECTIONS
7
6
5
4
3
2
1
8175-01.EPS
INPUT
OUTPUT STAGE SUPPLY
OUTPUT
GROUND
FLYBACK GENERATOR
SUPPLY VOLTAGE
INVERTING INPUT
Tab connecte dto Pin 4
BLOCK DIAGRAM
1000µ F
35V
+VS
0.1µ F 1N4001
2
35V 220µ F
6
Variable Gain
Amplifier
3
Flyback
Generator
1
Power
Amplifier
5
7
1.5Ω
Variable Gain
Amplifier
0.1µF
200Ω
22kΩ
4
YOKE
15kΩ
8.2kΩ
1000µF
16V
8175-02.EPS
Thermal
Protection
2Ω
September 1993
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TDA8175
Symbol
Parameter
Value
Unit
VS
Supply Voltage (PIn 2)
35
V
V5, V6
Flyback Peak Voltage
60
V
Voltage at PIn 3
+VS
V3
V1, V7
Amplifier Input Voltage
+VS
IO
Output Peak Current (non-repetitive, t = 2ms)
2.5
A
IO
Output Peak Current at :
f = 50 or 60Hz, t ≤ 10µs
f = 50 or 60Hz, t > 10µs
3
2
A
A
100
mA
3
A
I3
Pin 3 DC Current at V5 < V2
I3
Pin 3 Peak-to-peak Flyback Current at f = 50 or 60Hz, tfly ≤ 1.5ms
Ptot
Tj, Tstg
o
Total Power Dissipation at Tcase = 70 C
20
Storage and Junction Temperature
W
o
-40, +150
C
8175-01.TBL
ABSOLUTE MAXIMUM RATINGS
Symbol
R th (j-c)
Parameter
Value
Junction-case Thermal Resistance
Max.
Unit
o
3
C/W
8175-02.TBL
THERMAL DATA
ELECTRICAL CHARACTERISTICS (VS = 35V, Tamb = 25oC unless otherwise specified)
Parameter
Pin 2 Quiescent Current
I6
Pin 6 Quiescent Current
I1
Amplifier Input Bias Current
V1 = 1V
V3
Pin 3 Saturation to GND
V5
V5
Min.
Typ.
Max.
Unit
18
36
mA
16
36
mA
-0.1
-1
µA
I3 = 20mA
1
1.5
V
Quiescent Output Voltage
VS = 35V, Ra = 39kΩ
19
Output Saturation Voltage to GND
I5 = 1.2A
I5 = 0.7A
1
0.7
1.4
1
V
V
V5
Output Saturation Voltage to Supply
-I5 = 1.2A
-I5 = 0.7A
1.6
1.3
2.2
1.8
V
V
VO
Ramp Amplitude versus Voltage Supply
22V < VS < 30V
VS = 26V
G
AC Gain
VO
DC Output Voltage Accuracy
V7
Internal Bias
R7
Tj
V
4
0.54
0.61
%/V
0.67
V
8
%
2.7
V
Input Resistance
50
kΩ
Junction Temperature for Thermal Shutdown
140
THERMAL PROTECTION
The thermal protection circuit intervenes when the
die temperatures reaches 150oC and turns-off the
output power device.
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Test Conditions
I2
o
C
PUMPING COMPENSATION
The device incorporates a special preampliflier, the
gain of which varies with changes in supply voltage.
This functionallows perfect compensationof height
variations caused by changes in brightness.
8175-03.TBL
Symbol
TDA8175
PACKAGE MECHANICAL DATA :9 PINS - PLASTIC HEPTAWATT
E
L
D1
C
D
M
A
M1
L1
L2
G2
H3
G1
L3
G
L5
F
PM-HEPTV.EPS
L7
H2
F1
Dia.
L6
A
C
D
D1
E
F
F1
G
G1
G2
H2
H3
L
L1
L2
L3
L5
L6
L7
M
M1
Dia.
Min.
Millimeters
Typ.
2.4
1.2
0.35
0.6
2.41
4.91
7.49
2.54
5.08
7.62
10.05
Max.
4.8
1.37
2.8
1.35
0.55
08
0.9
2.67
5.21
7.8
10.4
10.4
Min.
0.094
0.047
0.014
0.024
0.095
0.193
0.295
Max.
0.189
0.054
0.110
0.053
0.022
0.031
0.035
0.105
0.205
0.307
0.409
0.409
0.668
0.587
0.848
0.891
3
15.8
6.6
0.102
0.594
0.236
2.8
5.08
3.65
0.100
0.200
0.300
0.396
16.97
14.92
21.54
22.62
2.6
15.1
6
Inches
Typ.
0.118
0.622
0.260
0.110
0.200
3.85
0.144
HEPTV.TBL
Dimensions
0.152
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result
from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without noti ce. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.
 1994 SGS-THOMSON Microelectronics - All Rights Reserved
2
Purchase of I C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I2C Patent. Rights to use these components in a I2C system, is granted provided that the system confo rms to
the I2C Standard Specifications as defined by Philips.
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