2003 Feb 05

2

Philips Semiconductors

Preliminary specification

Full bridge current driven vertical

deflection booster

TDA4867J

FEATURES

• Fully integrated, few external components

• Maximum 2.5 A (p-p) deflection current

• No additional components in combination with the

deflection controller family TDA485x and SAA4856

• Pre-amplifier with differential high CMRR current mode

inputs

• Low offsets

• High linear sawtooth signal amplification

• High efficient DC-coupled vertical output bridge circuit

• High deflection frequency up to 200 Hz

• Power supply and flyback supply voltage independent

adjustable to optimize power consumption and flyback

time

• Excellent transition behaviour during flyback

• Guard circuit for screen protection

• Power save mode controlled by input pins

(in combination with SAA4856 only) or guard pin.

GENERAL DESCRIPTION

The TDA4867J is a power booster for use in colour vertical

deflection systems for frame frequencies of 50 to 200 Hz.

The circuit provides a high CMRR current driven

differential input. Due to the bridge configuration of the two

output stages DC-coupling of the deflection coil is

achieved. In conjunction with the deflection controller

family TDA485x and SAA4856 the ICs offer an extremely

advanced system solution.

QUICK REFERENCE DATA

Notes

1. Voltages refer to pin GND.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

DC supplies; note 1

supply voltage

8.2

−

25

V

flyback supply voltage

note 2

−

60

V

quiescent flyback current

no load; no signal

−

2.5

4

mA

Vertical circuit

deflection current on pins OUTB

and OUTA (peak-to-peak value)

0.6

−

2.5

A

differential input current

note 3

−±500

±600

µA

Flyback generator

maximum current during flyback on

−−

2.5

A

Guard circuit; note 1

guard voltage

guard on

5.5

6.2

−

V