TDA4864AJ 데이터 시트보기 (PDF) - Philips Electronics

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TDA4864AJ

Vertical deflection booster

Philips Electronics 

Philips Semiconductors

Vertical deflection booster

Product specification

TDA4864J; TDA4864AJ

APPLICATION INFORMATION

handbook, full pagewidth

VF

2

TDA4864J

5

1N4448

2.2 Ω

BC556

vertical

output

signal

VP

3.3 kΩ

22 µF

>1 kΩ

guard output

HIGH = error

BC548

220 kΩ

Fig.8 Application circuit with TDA4864J for external guard signal generation.

handbook, full pagewidth

THERMAL

PROTECTION

TDA4864J

DIFFERENTIAL

INPUT

STAGE

VERTICAL

OUTPUT

FLYBACK

GENERATOR

REFERENCE

CIRCUIT

7

6

INP INN

from

deflection controller

R3

1.8 kΩ

R2

1.8 kΩ

CS2(1)

RS2

5.6 Ω

RP

270 Ω

5

43

V-OUT

GND VP2

RS1 CS1

5.6 Ω 100

nF

deflection

coil

470 µF

R1

1Ω

(1 W)

VN

−8 V

2

1

VFB

VP1

D1

BYV27

470 µF

470 µF

4.3 Ω

VF

+50 V

VP

+9 V

Attention: the heatsink of the IC must be isolated against ground of the application (it is connected to pin GND).

(1) With CS2 (typical value between 47 and 150 nF) the flyback time and the noise behaviour can be optimized.

Fig.9 Application circuit with TDA4864J.

2003 Oct 31

11

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