Philips TDA8350Q-N6, TDA8350Q-N4 Datasheet

DATA SH EET

Preliminary specification
Supersedes data of September 1991
File under Integrated Circuits, IC02

January 1995

INTEGRATED CIRCUITS

Philips Semiconductors

TDA8350Q

DC-coupled vertical deflection and
East-West output circuit

January 1995 2

Philips Semiconductors Preliminary specification

DC-coupled vertical deflection and
East-West output circuit

TDA8350Q

FEATURES

• Few external components

• Highly efficient fully DC-coupled vertical output bridge

circuit

• Vertical flyback switch

• Guard circuit

• Protection against:

– short-circuit of the output pins
– short-circuit of the output pins to V

P

• High EMC immunity due to common mode inputs

• Temperature (thermal) protection

• East-West output stage with one single conversion

resistor.

GENERAL DESCRIPTION

The TDA8350Q is a power circuit for use in 90° and 110°
colour deflection systems for field frequencies of 50
to 120 Hz. The circuit provides a DC driven vertical
deflection output circuit, operating as a highly efficient
class G system and an East-West driver for sinking the
diode modulator current.

QUICK REFERENCE DATA

Note

1. A flyback supply voltage of>50 V up to 60 V is allowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(dependent on I

O

and the inductance of the coil) has to be connected between pin 7 and ground. The decoupling
capacitor of VFB has to be connected between pin 8 and pin 4. This supply voltage line must have a resistance of
33 Ω (see application circuit Fig.5).

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DC supply

V

P

supply voltage 9 − 25 V

I

P

quiescent current − 30 − mA

Vertical circuit

I

O(p-p)

output current (peak-to-peak value) −−3A

I

diff(p-p)

differential input current
(peak-to-peak value)

− 600 −µA

V

diff(p-p)

differential input voltage
(peak-to-peak value)

− 1.5 1.8 V

Flyback switch

I

M

peak output current −−±1.5 A

V

FB

flyback supply voltage −−50 V

note 1 −−60 V

East-West amplifier

I

O(sink)

output current (sink only) −−500 mA

V

O(sink)

peak output voltage I

O(sink)

=10µA −−40 V

I

bias

input bias current −−1µA

Thermal data (in accordance with IEC 747-1)

T

stg

storage temperature −65 − 150 °C

T

amb

operating ambient temperature −25 − +75 °C

T

vj

virtual junction temperature −−150 °C

January 1995 3

Philips Semiconductors Preliminary specification

DC-coupled vertical deflection and
East-West output circuit

TDA8350Q

ORDERING INFORMATION

BLOCK DIAGRAM

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8350Q DBS13P plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm) SOT141-6

Fig.1 Block diagram.

handbook, full pagewidth

MBC229-1

7

13

V

3

9

5

GND

12

I

I(corr)

V

O(sink)

4

V

P

V

FB

8

1

2

I

drive(pos)

I

drive(neg)

TDA8350

I

I(set)

I

I(set)

I

S

I

S

V

P

I

T

I

T

V

P

11

V

O(A)

V

O(B)

V

O(B)

V

O(A)

V

I(fb)

V

P

V

O(guard)

10

CURRENT

SOURCE

January 1995 4

Philips Semiconductors Preliminary specification

DC-coupled vertical deflection and
East-West output circuit

TDA8350Q

PINNING

SYMBOL PIN DESCRIPTION

I

drive(pos)

1 input power-stage (positive);

includes I

I(sb)

signal bias

I

drive(neg)

2 input power-stage (negative);

includes I

I(sb)

signal bias

V

I(fb)

3 feedback voltage input

V

P

4 supply voltage

V

O(B)

5 output voltage B
n.c. 6 not connected
GND 7 ground
V

FB

8 flyback supply voltage
V

O(A)

9 output voltage A
V

O(guard)

10 guard output voltage

V

O(sink)

11 East-West amplifier driver (sink)

output voltage

I

I(corr)

12 East-West amplifier input

correction current (negative)

I

I(set)

13 East-West amplifier set input

current (positive)

Fig.2 Pin configuration.

book, halfpage

TDA8350

I

drive(pos)

V

I(fb)

V

P

V

O(B)

n.c.

GND

V

FB

V

O(A)

V

O(guard)
V

O(sink)

I

I(corr)
I

I(set)

I

drive(neg)

MBC226-1

1
2
3
4
5
6
7
8

9
10
11
12
13

FUNCTIONAL DESCRIPTION

The vertical driver circuit is a bridge configuration. The
deflection coil is connected between the output amplifiers,
which are driven in phase opposition. An external resistor
(RM) connected in series with the deflection coil provides
internal feed back information. The differential input circuit
is voltage driven. The input circuit has been adapted to
enable it to be used with the TDA9150, TDA9151B,
TDA9160A, TDA9162, TDA8366 and TDA8367 which
deliver symmetrical current signals. An external resistor
(R

CON

) connected between the differential input
determines the output current through the deflection coil.
The relationship between the differential input current and
the output current is defined by: I

diff

× R

CON=I(coil)

× RM.
The output current is adjustable from 0.5 A (p-p) to 3 A
(p-p) by varying RM. The maximum input differential
voltage is 1.8 V. In the application it is recommended that
V

diff

= 1.5 V (typ). This is recommended because of the
spread of input current and the spread in the value of
R

CON

.

The flyback voltage is determined by an additional supply
voltage VFB. The principle of operating with two supply
voltages (class G) makes it possible to fix the supply
voltage VP optimum for the scan voltage and the second
supply voltage VFB optimum for the flyback voltage. Using
this method, very high efficiency is achieved.

The supply voltage VFB is almost totally available as
flyback voltage across the coil, this being possible due to
the absence of a decoupling capacitor (not necessary, due
to the bridge configuration). The output circuit is fully
protected against the following:

• thermal protection

• short-circuit protection of the output pins (pins 5 and 9)

• short-circuit of the output pins to V

P.

A guard circuit V

O(guard)

is provided. The guard circuit is

activated at the following conditions:

• during flyback

• during various short-circuit possibilities at the output

pins

• during open loop

• when the thermal protection is activated.

This signal can be used for blanking the picture tube
screen.

An East-West amplifier is also provided. This amplifier is
an inverting amplifier which is current driven with sink
current only capabilities.

January 1995 5

Philips Semiconductors Preliminary specification

DC-coupled vertical deflection and
East-West output circuit

TDA8350Q

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Notes

1. A flyback supply voltage of>50 V up to 60 V is allowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(dependent on I

O

and the inductance of the coil) has to be connected between pin 7 and ground. The decoupling
capacitor of VFB has to be connected between pin 8 and pin 4. This supply voltage line must have a resistance of
33 Ω (see application circuit Fig.5).

2. IO maximum determined by current protection.

3. The operating area is limited by a straight line between the points V

O(sink)

= 40 V; I

O(sink)

=10µA and V

O(sink)

=2V;

I

O(sink)

= 500 mA.

4. Up to Vp=18V.

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

DC supply

V

P

supply voltage non-operating − 40 V

− 25 V

V

FB

flyback supply voltage − 50 V

note 1 60 V

Vertical circuit

I

O

output current (peak-to-peak value) note 2 − 3A

V

O(A)

output voltage (pin 9) − 52 V

note 1 62 V

Flyback switch

I

M

peak output current −±1.5 A

East-West amplifier

V

O(sink)

output voltage I

O(sink)

=10µA; note 3 − 40 V

I

O(sink)

output current V

O(sink)

= 2 V; note 3 − 500 mA

Thermal data (in accordance with IEC 747-1)

T

stg

storage temperature −65 150 °C

T

amb

operating ambient temperature −25 +75 °C

T

vj

virtual junction temperature − 150 °C

R

th vj-c

resistance vj-case − 4 K/W

R

th vj-a

resistance vj-ambient in free air − 40 K/W

t

sc

short-circuiting time note 4 − 1hr