Philips TDA4863J, TDA4863AJ Datasheet

INTEGRATED CIRCUITS

DATA SHEET

TDA4863J; TDA4863AJ

Vertical deflection booster

Product specification			2000 Aug 17
File under Integrated Circuits, IC02

Philips Semiconductors	Product specification
Vertical deflection booster	TDA4863J; TDA4863AJ

FEATURES

∙Power amplifier with differential inputs

∙Output current up to 3 A (p-p)

∙High vertical deflection frequency up to 200 Hz

∙High linear sawtooth signal amplification

∙Flyback generator:

–TDA4863J: separate adjustable flyback supply voltage up to 60 V

–TDA4863AJ: internally doubled supply voltage (two supply voltages only for DC-coupled outputs).

QUICK REFERENCE DATA

Measurements referenced to ground (pin GND).

GENERAL DESCRIPTION

The TDA4863J and TDA4863AJ are deflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.

The TDA4863J needs a separate flyback supply voltage, so the supply voltages are independently adjustable to optimize power consumption and flyback time.

For the TDA4863AJ the flyback supply voltage will be generated internally by doubling the supply voltage and therefore a separate flyback supply voltage is not needed.

Both circuits provide differential input stages and fit well with the TDA485X monitor deflection controller family.

SYMBOL	PARAMETER	CONDITIONS	MIN.	TYP.	MAX.	UNIT
VP1	supply voltage 1 (pin 1)		9	−	30	V
VP2	supply voltage 2 for vertical output		VP1 − 1	−	60	V
	(pin 3)
VFB	flyback supply voltage of TDA4863J		VP1 − 1	−	60	V
	(pin 2)
VP3	flyback generator output voltage of	I5 = −1.5 A	0	−	VP1 + 2.2	V
	TDA4863AJ (pin 2)
I5(p-p)	vertical output current (pin 5)		−	−	3	A
	(peak-to-peak value)
IP1	supply current 1 (pin 1)	during scan	−	6	10	mA
IP2	quiescent supply current 2 (pin 3)	I5 = 0	−	25	60	mA
VINP	input voltage (pin 7)		1.6	−	VP1 − 0.5	V
VINN	input voltage (pin 6)		1.6	−	VP1 − 0.5	V
Tamb	ambient temperature		−20	−	+75	°C

ORDERING INFORMATION

	TYPE NUMBER		PACKAGE
		NAME	DESCRIPTION	VERSION
	TDA4863J	DBS7P	plastic DIL-bent-SIL power package; 7 leads	SOT524-1
			(lead length 12/11 mm); exposed die pad
	TDA4863AJ

2000 Aug 17

2

Philips Semiconductors	Product specification
Vertical deflection booster	TDA4863J; TDA4863AJ
BLOCK DIAGRAM

		THERMAL			TDA4863J
		PROTECTION
DIFFERENTIAL		VERTICAL		FLYBACK	REFERENCE
INPUT
		OUTPUT		GENERATOR		CIRCUIT
STAGE
7	6	5	4	3	2	1
INP	INN	V-OUT	GND	VP2	VFB	VP1
		RS1	CS1		D1
			C1	C4		C2
	RP	deflection
		coil
	R3				R4
from TDA485X	R2	R1
			VN		VF	VP
							MHB714

Fig.1 Block diagram of TDA4863J.

2000 Aug 17

3

Philips Semiconductors	Product specification
Vertical deflection booster	TDA4863J; TDA4863AJ

		THERMAL				TDA4863AJ
		PROTECTION
DIFFERENTIAL		VERTICAL		FLYBACK		REFERENCE
INPUT
		OUTPUT		GENERATOR		CIRCUIT
STAGE
7	6	5	4	3	2	1
INP	INN	V-OUT	GND	VP2	VP3	VP1
		RS1	CS1	CF
						D1
		deflection		R5		C2
	RP
		coil
	R3		C1
from TDA485X	R2	R1				R6
			VN			VP	MHB715

Fig.2 Block diagram of TDA4863AJ.

2000 Aug 17

4

Philips Semiconductors					Product specification
Vertical deflection booster					TDA4863J; TDA4863AJ
PINNING
SYMBOL		PIN			DESCRIPTION
		TDA4863J		TDA4863AJ
VP1		1		1	positive supply voltage 1
VFB		2		−	flyback supply voltage
VP3		−		2	flyback generator output
VP2		3		3	supply voltage 2 for vertical output
GND		4		4	ground or negative supply voltage
V-OUT		5		5	vertical output
INN		6		6	inverted input of differential input stage
INP		7		7	non-inverted input of differential input stage

handbook, halfpage			handbook, halfpage
VP1	1		VP1	1
VFB			VP3
	2			2
VP2			VP2
	3			3
GND		TDA4863J	GND		TDA4863AJ
	4			4
V-OUT			V-OUT
	5			5
INN			INN
	6			6
INP			INP
	7			7
		MHB716			MHB717

Fig.3 Pin configuration of TDA4863J.

Fig.4 Pin configuration of TDA4863AJ.

2000 Aug 17

5

Philips Semiconductors	Product specification
Vertical deflection booster	TDA4863J; TDA4863AJ

FUNCTIONAL DESCRIPTION

Both the TDA4863J and TDA4863AJ consist of a differential input stage, a vertical output stage, a flyback generator, a reference circuit and a thermal protection circuit.

The TDA4863J operates with a separate flyback supply voltage (see Fig.1) while the TDA4863AJ generates the flyback voltage internally by doubling the supply voltage (see Fig.2).

Differential input stage

The differential sawtooth input signal (e.g. coming from the deflection controller family TDA485X) is connected to the inputs (inverted signal to pin 6 and non-inverted signal to pin 7). The vertical feedback signal is superimposed on the inverted signal on pin 6.

Vertical output and thermal protection

The vertical output stage is a quasi-complementary class-B amplifier with a high linearity.

The output stage is protected against thermal overshoots. For a junction temperature Tj > 150 °C this protection will be activated and will reduce then the deflection current (I5).

Flyback generator

The flyback generator supplies the vertical output stage during flyback.

The TDA4863J is used with separate flyback supply voltage to achieve a short flyback time with minimized power dissipation.

The TDA4863AJ needs a capacitor CF between

pins 2 and 3 (see Fig.2). Capacitor CF is charged during scan, using the external diode D1 and resistor R5. During flyback the cathode of capacitor CF is connected to the positive supply voltage and the flyback voltage is then twice the supply voltage. For the TDA4863AJ the resistor R6 in the positive supply line can be used to reduce the power consumption.

In parallel with the deflection coil a damping resistor RP and an RC combination (RS1 = 5.6 Ω and CS1 = 100 nF) are needed. Furthermore, another additional

RC combination (RS2 = 5.6 Ω and CS2 = 47 to 150 nF) can be used to minimize the noise effect and the flyback time (see Figs 9 and 10).

2000 Aug 17

6