Philips tda8351aq DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA8351AQ

DC-coupled vertical deflection
output circuit

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

1999 Sep 27

Philips Semiconductors Product specification

DC-coupled vertical deflection output

TDA8351AQ

circuit

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 (9 and 5)
– 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.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DC supply

V

P

I

q

supply voltage 9 16 25 V
quiescent supply current − 30 − mA

Vertical circuit

I

O(p-p)

output current
(peak-to-peak value)

I

diff(p-p)

differential input current
(peak-to-peak value)

V

diff(p-p)

differential input voltage
(peak-to-peak value)

Flyback switch

I

M

V

FB

peak output current t ≤ 1.5 ms −−±1.5 A
flyback supply voltage −−50 V

note 1 −−60 V

Thermal data (in accordance with IEC 747-1)

T

stg

T

amb

T

vj

storage temperature −55 − +150 °C
operating ambient temperature −25 − +75 °C
virtual junction −−150 °C

GENERAL DESCRIPTION

The TDA8351A is apower 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.

−−3A

− 600 −µA

− 1.8 − V

Note

1. Aflybacksupplyvoltageof>50 Vupto60 Visallowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(depending on I

and the inductance of the coil) has to be connected between pin 9 and ground. The decoupling

O

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).

1999 Sep 27 2

Philips Semiconductors Product specification

DC-coupled vertical deflection output

TDA8351AQ

circuit

ORDERING INFORMATION

TYPE NUMBER

NAME DESCRIPTION VERSION

TDA8351A DBS13P plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm) SOT141-6

BLOCK DIAGRAM

V

V

O(guard)

handbook, full pagewidth

P

48

V

P

10

PACKAGE

V

FB

TDA8351A

I

drive(pos)

I

drive(neg)

1

2

V

7
GND

I

S

I

S

CURRENT

SOURCE

I

T

I

T

V

P

9

V

V

O(A)

V

P

V

O(B)

MGC055

O(A)

3

V

I(fb)

5

V

O(B)

Fig.1 Block diagram.

1999 Sep 27 3

Philips Semiconductors Product specification

DC-coupled vertical deflection output
circuit

PINNING FUNCTIONAL DESCRIPTION

SYMBOL PIN DESCRIPTION

I

drive(pos)

I

drive(neg)

V

I(fb)

V

P

V

O(B)

1 input power-stage (positive);

includes I

signal bias

I(sb)

2 input power-stage (negative);

includes I

signal bias

I(sb)

3 input feedback voltage
4 supply voltage

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

FB

V

O(A)

V

O(guard)

8 input flyback supply voltage

9 output voltageA

10 guard output voltage
n.c. 11 not connected
n.c. 12 not connected
n.c. 13 not connected

handbook, halfpage

The die has been glued to the metal block of the package. If the metal
block is not insulated from the heat sink, the heat sink may only be
connected directly to pin 7.

I

drive(pos)

I

drive(neg)

V

V

V

V

O(guard)

I(fb)

V

O(B)

n.c.

GND

V

FB

O(A)

n.c.
n.c.

n.c.

p

1
2
3
4
5
6
7

TDA8351A

8

9
10
11
12
13

MGC056

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 TDA8367 which
deliver symmetrical current signals. An external resistor
(R

) connected between the differential input

CON

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

= 1.5 V (typ). This is recommended because of the

diff

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 5 and 9)

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

A guard circuit V

is provided. The guard circuit is

O(guard)

activated at the following conditions:

• during flyback

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

the output pins (pins 5 and 9) to VP or ground

• during open loop

• when the thermal protection is activated.

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

TDA8351AQ

× R

diff

CON=Icoil

× RM.

Fig.2 Pin configuration.

1999 Sep 27 4

Philips Semiconductors Product specification

DC-coupled vertical deflection output

TDA8351AQ

circuit

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

DC supply

V

P

V

FB

Vertical circuit

I

O(p-p)

V

O(A)

Flyback switch

I

M

Thermal data (in accordance with IEC 747-1)

T

stg

T

amb

T

vj

R

th vj-c

R

th vj-a

t

sc

supply voltage non-operating − 40 V

− 25 V

flyback supply voltage − 50 V

note 1 − 60 V

output current (peak-to-peak value) note 2 − 3A
output voltage (pin 7) − 52 V

note 1 − 62 V

peak output current −±1.5 A

storage temperature −55 +150 °C
operating ambient temperature −25 +75 °C
virtual junction temperature − 150 °C
resistance vj-case − 4 K/W
resistance vj-ambient in free air − 40 K/W
short-circuiting time note 3 − 1hr

Notes

1. Aflybacksupplyvoltageof>50 Vupto60 Visallowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(depending on I

and the inductance of the coil) has to be connected between pin 9 and ground. The decoupling

O

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. Up to VP=18V.

1999 Sep 27 5