Philips TDA8351-N5, TDA8351-N4 Datasheet

DATA SH EET

Product specification
Supersedes data of January 1995
File under Integrated Circuits, IC02

1999 Sep 27

INTEGRATED CIRCUITS

TDA8351

DC-coupled vertical deflection
circuit

1999 Sep 27 2

Philips Semiconductors Product specification

DC-coupled vertical deflection circuit TDA8351

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 (7 and 4)
– short-circuit of the output pins to V

P

• Temperature protection

• High EMC immunity because of common mode inputs

• A guard signal in zoom mode.

GENERAL DESCRIPTION

The TDA8351 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.

QUICK REFERENCE DATA

Note

1. Aflybacksupplyvoltageof>50 Vupto60 Visallowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(depending 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 6 and pin 3. This supply voltage line must have a resistance of
33 Ω (see application circuit Fig.6).

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DC supply

V

P

supply voltage 9 − 25 V

I

q

quiescent supply 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

Thermal data (in accordance with IEC 747-1)

T

stg

storage temperature −55 − +150 °C

T

amb

operating ambient temperature −25 − +75 °C

T

vj

virtual junction temperature −−150 °C

1999 Sep 27 3

Philips Semiconductors Product specification

DC-coupled vertical deflection circuit TDA8351

ORDERING INFORMATION

BLOCK DIAGRAM

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8351 SIL9P plastic single-in-line power package; 9 leads SOT131-2

Fig.1 Block diagram.

handbook, full pagewidth

MBC988

5

V

9

7

4

8

36

1

2

TDA8351

GND

CURRENT

SOURCE

V

I(fb)

V

O(A)

+V

O(A)

V

O(B)

−V

O(B)

V

O(guard)

V

P

+V

P

+V

P

+V

P

−I

S

−I

T

+I

S

+I

T

V

FB

I

drive(pos)

I

drive(neg)

1999 Sep 27 4

Philips Semiconductors Product specification

DC-coupled vertical deflection circuit TDA8351

PINNING FUNCTIONAL DESCRIPTION

The vertical driver circuit is a bridge configuration. The
deflectioncoilisconnectedbetweentheoutputamplifiers,
which are driven in opposite phase. An external resistor
(RM) connected in series with the deflection coil provides
internalfeedback 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 TDA8376 which
deliver symmetrical current signals. An external resistor
(R

CON

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

diff

× R

CON=Icoil

× 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 VPoptimum for the scan voltage and the second
supplyvoltageVFBoptimumfortheflyback 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). Built-in protections are:

• thermal protection

• short-circuit protection of the output pins (pins 4 and 7)

• short-circuit protection of the output pins to VP.

A guard circuit V

O(guard)

is provided. The guard circuit is

activated at the following conditions:

• during flyback

• during short-circuit of the coil and during short-circuit of

the output pins (pins 4 and 7) to VP or ground

• during open loop

• when the thermal protection is activated.

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

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

P

3 operating supply voltage

V

O(B)

4 output voltage B
GND 5 ground
V

FB

6 input flyback supply voltage
V

O(A)

7 output voltage A
V

O(guard)

8 guard output voltage
V

I(fb)

9 input feedback voltage

Fig.2 Pin configuration.

Metal block connected to substrate pin 5.
Metal on back.

handbook, 2 columns

1
2
3
4
5
6
7
8
9

TDA8351

I

drive(pos)

V

I(fb)

V

P

V

O(B)
GND

V

FB

V

O(A)

V

O(guard)

I

drive(neg)

MBC989

1999 Sep 27 5

Philips Semiconductors Product specification

DC-coupled vertical deflection circuit TDA8351

LIMITING VALUES

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

Notes

1. Aflybacksupplyvoltageof>50 Vupto60 Visallowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(depending 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 6 and pin 3. This supply voltage line must have a resistance of
33 Ω (see application circuit Fig.6).

2. IO maximum determined by current protection.

3. 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(p-p)

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

V

O(A)

output voltage (pin 7) − 52 V

note 1 − 62 V

Flyback switch

I

M

peak output current −±1.5 A

Thermal data (in accordance with IEC 747-1)

T

stg

storage temperature −55 +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 3 − 1hr