Full bridge current driven vertical deflection booster
Description
INTEGRATED CIRCUITS
DATA SHEET
TDA4867J Full bridge current driven vertical deflection booster
Preliminary specification 2003 Feb 05
Philips Semiconductors
Preliminary specification
Full bridge current driven vertical deflection booster
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.
QUICK REFERENCE DATA SYMBOL DC supplies; note 1 VP VFB Iq(VFB) Idefl(p-p) Ii(dif) IFB(p-p) supply voltage flyback supply voltage quiescent flyback current note 2 no load; no signal 8.
2 VP + 6 − 0.
6 note 3 − − − − 2.
5 − ±500 − PARAMETER CONDITIONS MIN.
TYP.
GENERAL DESCRIPTION
TDA4867J
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.
MAX.
UNIT
25 60 4
V V mA
Vertical circuit deflection current on pins OUTB and OUTA (peak-to-peak value) differential input current 2.
5 ±600 2.
5 A µA A
Flyback generator maximum current during flyback on pin VFB (peak-to-peak value) guard voltage guard on
Guard circuit; note 1 VGUARD Notes 1.
Voltages refer to pin GND.
2.
If VFB is between 40 and 6...
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