Datasheet TDA8171 Datasheet (SGS Thomson Microelectronics)

VERTICAL DEFLECTION BOOSTER

.

POWER AMPLIFIER

.

FLYBACK GENERATOR

.

THERMAL PROTECTION

.

OUTPUT CURRENT UP T O 3. 0A

.

FLYBACK VOLTAGE UP TO 70V (on Pin 5)

.

INTERNAL REFERE NCE V OLTAGE

DESCRIPTION

Designed for monitors and high performance TVs,
the TDA8171 vertical deflection booster delivers
flyback voltages up to 70V.

The TDA 8171 oper ates wit h supplies up to 35V and
provides up to 3A

The TDA8171 is offered in HEPT A WATT package.

PIN CONNECTIONS

output curren t to drive the y oke.

PP

PP

HEPTAWATT

(Plastic Package)

ORDER CODE :

TDA8171

TDA8171

Tab connected to Pin 4

BLOCK DIAGRAM

+ REFERENCE VOLTAGE

INVERTING INPUT

NON-INVERTING

7
6
5
4
3
2
1

VOLTAGE

REFERENCE

VOLTAGE

1

10k

7

TDA8171

SUPPLY

2

Ω

NON-INVERTING INPUT + REFERENCE VOLTAGE
OUTPUT STAGE SUPPLY
OUTPUT
GROUND
FLYBACK GENERATOR
SUPPLY VOLTAGE
INVERTING INPUT

OUTPUT

STAGE

SUPPLY

6

POWER

AMPLIFIER

4

GROUND

FLYBACK

GENERATOR

3

FLYBACK

GENERATOR

THERMAL

PROTECTION

5

OUTPUT

8171-01.EPS

8171-02.EPS

December 1998

1/4

TDA8171

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V
V

, V7Amplifier Input Voltage (Pins 1-7) (see Note 1) - 0.3, + V

V

1

I

V

ESD

T

oper

T

T

Notes :

THERMAL DATA

Symbol Parameter Value Unit

R

th (j-c)

T

T

Supply Voltage (Pin 2) (see Note 1) 40 V

S

Flyback Peak Voltage (Pin 6) (see Note 1) 75 V

6

Maximum Output Peak Current (see Notes 2 and 3) 2.5 A

O

Maximum Sink Current (first part of flyback) (t < 1ms) 2.5 A

I

3

Maximum Source Current (t < 1ms) 2.5 A

I

3

Electrostatic Handling for all pins (see Note 4) 2000 V
Operating Ambient Temperature - 20, + 75
Storage Temperature - 40, + 150

stg

Junction Temperature +150

j

1. Versus Pin 4.

2. The output current can reach 4A peak for t ≤ 10µs (up to 120Hz).

3. Provided SOAR is respected (see Figures 1 and 2).

4. Equivalent to discharging a 100pF capacitor through a 1.5kΩ series resistor.

Junction-case Thermal Resistance Max. 3
Temperature for Thermal Shutdown 150

t

Recommended Max. Junction Temperature 120

jr

S

o

C/W

V

o

C

o

C

o

C

o

C

o

C

8171-01.TBL

8171-02.TBL

ELECTRICAL CHARACTERISTICS

(V

= 35V, TA = 25oC, unless otherwise specified)

S

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

V

∆

V

7

∆

V

GV Voltage Gain 80 dB
V

V

V

D5 - 6

V

D3 - 2

V

V

Operating Supply Voltage Range 10 35 V

S

Pin 2 Quiescent Current I3 = 0, I5 = 0 9 20 mA

I

2

Pin 6 Quiescent Current I3 = 0, I5 = 0, V6 = 35V 8 15 30 mA

I

6

Max. Peak Output Current 1.5 A

I

O

Amplifier Bias Current V1 = 1V - 1

I

1

Reference Voltage 2.35 V

7

/∆VSReference Voltage Drift versus Supply Voltage 1 2 mV/V

/∆t Reference Voltage Drift versus Temperature 0.15 mV/oC

7

Output Saturation Voltage to GND (Pin 4) I5 = 1.5A 1 1.7 V

5L

Output Saturation Voltage to Supply (Pin 6) I5 = - 1.5A 1.8 2.3 V

5H

Diode Forward Voltage between Pins 5-6 I5 = 1.5A 1.8 2.3 V
Diode Forward Voltage between Pins 3-2 I3 = 1.5A 1.6 2.2 V
Saturation Voltage on Pin 3 I3 = 20mA 0.4 1 V

3SL

Saturation Voltage to Pin 2 (2nd part of flyback) I3 = - 1.5A 2.1 2.8 V

3SH

µ

A

8171-03.TBL

2/4

APPLICATION CIRCUIT

TDA8171

+ V

S

C

F

Figure 1 :

IC (A)

10

@ T

R5

1

7

Output Transistors SOA

(for secondary breakdown)

= 25°C

case

REFERENCE

VOLTAGE

10k

Ω

TDA8171

2

6

POWER

AMPLIFIER

4

3

FLYBACK

GENERATOR

THERMAL

PROTECTION

Figure 2 :

5

Ω

Ω

1.5

330

R1

YOKE

C

L

R3

R2

R4

F

µ

0.47

Secondary Breakdown Temperature

8171-03.EPS

Derating Curve
(ISB = secondary breakdown current)

ISB (%)

100

90

1

80

-1

10

10

-2

t = 1ms
t = 10ms
t = 100ms

11010

V

(V)

CE

2

70

60

8171-04.EPS

T

(°C)

case

25 50 75 100 125

3/4

8171-05.EPS

TDA8171

PACKAGE MECHANICAL DATA :

Dimensions

Min. Typ. Max. Min. Typ. Max.

HEPTAW AT

Millimeters Inches

A 4.8 0.189
C 1.37 0.054
D 2.4 2.8 0.094 0.110

D1 1.2 1.35 0.047 0.053

E 0.35 0.55 0.014 0.022
F 0.6 08 0.024 0.031

F1 0.9 0.035

G 2.41 2.54 2.67 0.095 0.100 0.105
G1 4.91 5.08 5.21 0.193 0.20 0 0.205
G2 7.49 7.62 7.8 0.295 0.30 0 0.307
H2 10.4 0.409
H3 10.05 10.4 0.396 0.409

L 16.97 0.668
L1 14.92 0.587
L2 21.54 0.848
L3 22.62 0.891
L5 2.6 3 0.102 0.118
L6 15.1 15.8 0.594 0.622
L7 6 6.6 0.236 0.260

M 2.8 0.110

M1 5.08 0.200

Dia. 3.65 3.85 0.144 0.152

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