SGS Thomson Microelectronics TDA8175 Datasheet
TV VERTICALDEFLECTION OUTPUT CIRCUIT
.
POWERAMPLIFIER
.
FLYBACKGENERATOR
.
AUTOMATICPUMPING COMPENSATION
.
THERMAL PROTECTION
.
REFERENCEVOLTAGE
DESCRIPTION
The TDA8175 is a monolithic integrated circuit in
HEPTAWATTpackage.It isahighefficiencypower
boosterfor direct driving of verticalwindings of TV
yokes. It is intended for use in Color and B & W
televisionsets as wellas in monitorsanddisplays.
PINCONNECTIONS
TDA8175
HEPTAWATT
(Plastic Package)
ORDER CODE : TDA8175
BLOCK DIAGRAM
Tab connectedto Pin 4
1000µF
35V
Variable Gain
Amplifier
1
7
Variable Gain
Amplifier
1N4001
Amplifier
7
6
5
4
3
2
1
Power
INPUT
OUTPUT STAGE SUPPLY
OUTPUT
GROUND
FLYBACK GENERATOR
SUPPLY VOLTAGE
INVERTING INPUT
8175-01.EPS
+V
15kΩ
5
0.1µF
S
1.5Ω
200Ω
8.2kΩ
YOKE
22kΩ
1000µF
16V
220µF0.1µF
35V
362
Flyback
Generator
Thermal
Protection
4
September 1993
2
Ω
8175-02.EPS
1/3
TDA8175
ABSOLUTEMAXIMUMRATINGS
Symbol Parameter Value Unit
V
V
5,V6
V
V1,V7Amplifier Input Voltage +V
I
O
I
O
I
3
I
3
P
tot
,T
T
j
THERMALDATA
Symbol Parameter Value Unit
R
th (j-c)
Supply Voltage (PIn 2) 35 V
S
Flyback Peak Voltage 60 V
Voltage at PIn 3 +V
3
Output Peak Current (non-repetitive, t = 2ms) 2.5 A
Output Peak Current at :
f = 50 or 60Hz, t ≤ 10µs
f = 50 or 60Hz, t > 10µs
Pin 3 DC Current at V5 < V2 100 mA
Pin 3 Peak-to-peak Flyback Current at f = 50 or 60Hz, t
Total Power Dissipation at T
Storage and Junction Temperature -40, +150
stg
=70oC20W
case
≤ 1.5ms 3 A
fly
Junction-case Thermal Resistance Max. 3
S
S
3
2
o
C/W
A
A
o
C
8175-01.TBL
8175-02.TBL
ELECTRICAL CHARACTERISTICS (VS= 35V,T
=25oC unlessotherwisespecified)
amb
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
2
I
6
I
1
V
V
V
V
V
G AC Gain V
V
V
R
T
THERMALPROTECTION
The thermalprotectioncircuitinterveneswhenthe
die temperaturesreaches150
output power device.
Pin 2Quiescent Current 18 36 mA
Pin 6Quiescent Current 16 36 mA
Amplifier Input Bias Current V1= 1V -0.1 -1 µA
Pin 3Saturation to GND I3= 20mA 1 1.5 V
3
Quiescent Output Voltage VS= 35V, Ra= 39kΩ 19 V
5
Output Saturation Voltage to GND I5= 1.2A
5
Output Saturation Voltage to Supply -I5= 1.2A
5
Ramp Amplitude versus Voltage Supply 22V < VS< 30V 4 %/V
O
DC Output Voltage Accuracy 8 %
O
Internal Bias 2.7 V
7
Input Resistance 50 kΩ
7
Junction Temperaturefor Thermal Shutdown 140
j
= 0.7A
I
5
= 0.7A
-I
5
= 26V 0.54 0.61 0.67 V
S
1
0.7
1.6
1.3
PUMPINGCOMPENSATION
o
C and turns-off the
Thedeviceincorporatesa special preampliflier,the
gainofwhichvarieswithchangesin supplyvoltage.
Thisfunctionallowsperfectcompensationofheight
1.41V
2.2
1.8VV
variationscausedby changesin brightness.
V
o
C
8175-03.TBL
2/3
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