Datasheet TEA2029C Datasheet

TEA2029C

COLOR TV SCANNING AND POWER SUPPLY PROCESSOR

DEFLECTION

.

CERAMIC 500kHz RESONATOR FRE­QUENCYREFERENCE

.

NO LINE AND FRAME OSCILLATOR AD­JUSTMENT

.

DUALPLLFOR LINE DEFLECTION

.

HIGHPERFORMANCE SYNCHRONIZATION

.

SUPERSANDCASTLE OUTPUT

.

VIDEOIDENTIFICATION CIRCUIT

.

AUTOMATIC 50/60Hz STANDARD IDENTIFI­CATION

.

EXCELLENTINTERLACINGCONTROL

.

SPECIALPATENTED FRAME SYNCHRO DE­VICE FOR VCROPERATION

.

FRAMESAW-TOOTH GENERATOR

.

FRAME PHASE MODULATOR FOR THYRIS­TOR

SMPSCONTROL

.

ERROR AMPLIFIER AND PHASE MODULA­TOR

.

SYNCHRONIZATION WITH HORIZONTAL
DEFLECTION

.

SECURITY CIRCUIT AND START UP PROC­ESSOR

.

OUTPUT PULSES ARE SENT TO THE PRI­MARY SMPS IC (TEA2261) THROUGH A
LOW COST TRANSFORMER

DESCRIPTION

The TEA2029Cis a complete (horizontal and ver­tical) deflection processor with secondary to pri­marySMPS control for color TV sets.

DIP28

(Plastic Package)

ORDER CODE : TEA2029C

PINCONNECTIONS

August 1993

+ INPUTFRAME AMPLIFIER

- INPUTFRAME AMPLIFIER

FRAMEOUTPUT

FRAME RAMP GENERATOR

GROUND POWER

SWITCH MODE POWER SUPPLYOUTPUT

V

S.M.P.S. INPUT REGULATION

HORIZONTAL OUTPUT
SUPER SANDCASTLE OUTPUT
HORIZONTALFLY-BACKINPUT

HORIZONTALSAW-TOOTH

CURRENT REFERENCE

1
2
3
4
5
6
7
8

CC

9
10
11
12
13
14

SAFETY INPUT

28

VIDEO INPUT

27

HORIZONTAL SYNCHRO CAPACITOR (tiplevel)

26FRAME SAW-TOOTHOUTPUT

VIDEO IDENTIFICATION CAPACITOR

25

MUTING +50/60Hz IDENTIFICATION OUTPUT

24

V.C.R. INPUT

23

PHASE COMPARATOR ϕ1 CAPACITOR

22

GROUND SUBSTRAT

21

A.G.C. KEY PULSEOUTPUT

20

V.C.O. INTPUT

19

V.C.O. OUTPUT

18

V.C.O. 90° REFERENCE

17

PHASE COMPARATOR ϕ2 CAPACITOR

16

STARTING AND SAFETYCAPACITOR

15

2029C-01.EPS

1/9

TEA2029C

BLOCK DIAGRAM

CC

V

Ω

3.3k

17

16

15

14

13

FLYBACK

HORIZONTAL

12

INPUT

503kHz

AGC

OUTPUT

SUBSTRAT

INPUT

VCR SWITCHING

50/60Hz

MUTING OUTPUT

18

19

2021

GROUND

23 22

2425

SUBST

AGC

KEY PULSE

ϕ1 DET

VCR

INPUT

VCO 500kHZ

ϕ2

ϕ1 INHIBITION TIME

CONSTANT SWITCHING

VIDEO

IDENTIFICATION

1.26VV

R

26µs

CONSTANT

PULSE WIDTH

HORIZONTAL

LOGIC TIMING

FRAME TIMING

µs

2

IDENTIFICATIONLOGIC

50/60Hz

VOLTAGE

CURRENT

REFERENCE

SWITCH ON/OFF

SAFETY CIRCUIT

GENERATOR

H. SAWTOOTH

SOFT STARTING

LOGIC

SAFETY

50/60

CIRCUIT

Hz

SUPER

SANDCASTLE

H. OUTPUT

H. INHIBIT

INHIB.

1.26VV

R

S.M.P.S.

ϕ MODULAT.

S.M.P.S.

OUTPUT

PHASE

FRAME

MODULAT.

S SCOUTPUT

11

109

8

7

6

5

CC

V

POWER

OUTPUT

HORIZONTAL

GROUND

FRAME

SAWTOOTH

2/9

H. SYNC

HORIZONTAL

TEA2029C

26

SYNCHRO

SYNCHRO

AND FRAME

27

SAFETY

VIDEO INPUT

INPUT

FRAME

FRAME

OUTPUT

AMPLIFIER

FRAME ERROR

1.26VV

R

28

1

SAWTOOTH

2

OUTPUT

4

3

FRAME

OUTPUT

SAWTOOTH

2029C-02.EPS

TEA2029C

GENERALDESCRIPTION

2

This integrated circuit uses I

L bipolar technology
and combinesanalogsignalprocessingwithdigital
processing.
Timing signalsareobtainedfromavoltage-control­ledoscillator(VCO) operatingat500KHzbymeans
of a cheap ceramic resonator. This avoids the
frequency adjustment normally required with line
and frame oscillators.
A chain of dividers and appropriate logic circuitry
produce very accurately defined sampling pulses
and the necessarytimingsignals.

The principalfunctionsimplementedare :

- Horizontalscanning processor.

- Framescanning processor.Two applicationsare

possible:

- D Class : Power stage using an external
thyristor.

- B Class : Powerstageusingan externalpower
amplifier with fly-back generator
suchas the TDA8170.

- Secondaryswitch mode power regulation.
The SMPS output synchronize a primary I.C.
(TEA2260/61)at the mains part.
ThisconceptallowsACTIVESTANDBYfacilities.

- Dualphase-lockedloop horizontalscanning.

- Highperformanceframeandlinesynchronization
with interlacing control.

- Videoidentificationcircuit.

- Supersandcastle.

- AGCkey pulse output.

- Automatic50-60Hz standardidentification.

- VCRinput for PLL time constant and frame syn­chro switching.

- Frame saw-tooth generator and phase modula­tor.

- Switchingmoderegulatedpowersupplycompris­ing erroramplifier and phasemodulator.

- Securitycircuit and start-up processor.

- 500kHzVCO

The circuit is supplied in a 28 pinDIP case.

= 12V.

V

CC

SynchronizationSeparator
Line synchronization separator is clamped to

black level of input video signal with synchroniza­tionpulse bottom level measurement.
The synchronization pulses are divided centrally
between the black level and the synchronization
pulse bottom level, to improve performance on
videosignals in noiseconditions.

FrameSynchronization
Framesynchronizationis fully integrated (no ex-

ternalcapacitorrequired).
The frame timing identificationlogic permits auto­matic adaptationto 50 - 60Hz standards or non-in-

terlacedvideo.
An automatic synchronization window width sys-

tem provides:

- fast frame capture (6.7ms wide window),

- good noise immunity (0.4ms narrow window).
The internal generator starts the dischargeof the

saw-tooth generator capacitor so that it is not dis­turbed by line fly back effects.
Thanks to the logic control, the beginning of the
charge phase does not dependon any disturbing
effectof the line fly-back.
A32µs timing is automatically applied on stan-
dardizedtransmissions, for perfect interlacing.
In VCR mode, the discharge time is controlled by
an internal monostable independent of the line
frequency and gives a direct frame synchroniza­tion.

HorizontalScanning

Thehorizontalscanningfrequencyisobtainedfrom
the 500kHz VCO.
The circuitusestwo phase-locked loops (PLL) :
the firstonecontrolsthefrequency,thesecondone
controls the relative phase of the synchronization
and linefly-back signals.

The frequency PLL has two switched time con­stants to provide :

- capture with a short time constant,

- good noise immunity after capture with a long
time constant.

The output pulse has a constant duration of 26µs,
independentof V

and any delay in switching off

CC

the scanningtransistor.

Video Identification

The horizontal synchronization signal is sampled
by a 2µs pulse within the synchronization pulse.
The signalis integrated by an externalcapacitor.

The identificationfunction provides three different
levels :

- 0V : no video identification

- 6V : 60Hz video identification

- 12V: 50Hz video identification

This information may be used for timing research
in thecaseoffrequencyor voltagesynthetizertype
receivers,and for audio muting.

SuperSandcastle with 3 levels : burst, line fly­back, frame blanking
In theevent of vertical scanning failure, the frame
blankinglevel goes high to protect the tube.

Frame blanking time (start with reset of Frame
divider) is 24 lines.

VCR Input

This provides for continuous use of the shorttime
constantofthefirst phase-lockedloop(frequency).
In VCR mode, the frame synchronization window

3/9

TEA2029C

widens out to a search window and there is no
delay of frame fly-back (direct synchronization).

FrameScanning

FRAMESAW-TOOTHGENERATOR. The current
to chargethecapacitorisautomaticallyswitched to
60Hzoperation to maintain constant amplitude.

FRAMEPHASE MODULATOR (WITH TWO DIF­FERENTIAL INPUTS). The outputsignalis a pulse
at the line frequency,pulsewidth modulatedby the
voltageat the differential pre-amplifierinput.
This signal is used to control a thyristor which
provides the scanning current to the yoke. The
saw-toothoutputisa lowimpedance,however,and
can therefore be used in class B operation with a
poweramplifier circuit.

Switch Mode Power Supply (SMPS)Secon­dary to PrimaryRegulation

Thispowersupplyusesa differentialerror amplifier
with an internal reference voltage of 1.26V and a
phase modulator operating at the line frequency.
Thepowertransistoristurnedoffbythe fallingedge
of thehorizontalsaw-tooth.
The ”soft start” device imposes a very small con-

ABSOLUTEMAXIMUMRATINGS (limitingvalues) T

Symbol Parameter Min. Max. Unit

Supply Voltage (pin 8) 14 V

VCC Operating Supply Voltage (pin 8) Starting threshold 13.2 V

I
I

V

I
I

I

V

V1/V2Common Mode Range (pins 1-2) 10 V

AGC Current (pin 20) 5 mA

20

Video Identification Current (pin 24) 10 mA

24

Negative Line Retrace Voltage(pin 12) – 20 V

12

Line Retrace Current (pin 12) + 10 mA

12

Line Output Current (pin 10) – 10 40 mA

10

I

Frame Saw-tooth Generator (pin3) 20 mA

3

I

Frame Output Current (pin 4) 100 mA

4

I

SMPS Output Current (pin 7) – 40 40 mA

7

Safety Input Current (pin 28) 5 mA

28

Safety Input Voltage (pin 28) V

28

duction angle on starting up, this angle progres­sivelyincreasesto its nominal regulation value.
The maximumconductionangle may bemonitored
by forcing a voltage on pin 15. This pin may also
be used for currentlimitation.
TheoutputpulseissenttotheprimaryS.M.P.S.I.C.
(TEA2261)via a lowcost synchro transformer.

SecurityCircuit and Start Up Processor

When the security input (pin 28) is at a voltage
exceeding 1.26V the three outputsare simultane­ouslycutoffuntilthisvoltagedropsbelowthe 1.26V
threshold again. In this case the switch mode
powersupplyis restartedbythe ”soft start”system.
If this cycle is repeated three times, the three
outputs are cut off definitively.To reset thesafety
logic circuits,V

mustbe zero volt.

CC

This circuit eliminates the risk toswitch off the TV
receiver in the event of a flashaffectingthe tube.
On startingup, thehorizontaland verticalscanning
functions come into operation at V

= 6V. The

CC

power supply then comes into operation progres­sively.
On shutting down, the three functions are inter­rupted simultaneouslyafter the first linefly-back.

=25°C (unless otherwisenoted)

amb

CC

2029C-01.TBL

THERMALDATA

Symbol Parameter Value Unit

R

th (j-a)

Junction-ambient Thermal Resistance 55 °C/W

ELECTRICAL OPERATING CHARACTERISTICS

=25°CVCC= 12V (unless otherwise noted) Pulse duration at 50%of theampl.

T

amb

Symbol Parameter Min. Typ. Max. Unit

I

Supply Current (pin 8, frame, line and SMPS output without load) 50 80 mA

CC

SYNCH SEPARATOR (Pins 26-27)

Positive Video Input AC Coupled (output impedance of signal source < 200Ω) 0.2 1.8 3 V

–I

4/9

Negative Clamping Current (during synch, pulse) - 25 - 40 - 55 µA

27

I

Clamping Current - Pin for slicing level 0.2V < V

27

< 2V (50% ofsync amplitude) 3 6 9 µA

27pp

2029C-02.TBL

pp

2029C-03.TBL

TEA2029C

ELECTRICAL OPERATING CHARACTERISTICS (continued)

Symbol Parameter Min. Typ. Max. Unit

SYNCH SEPARATOR (Pins 26-27) (continued)

–I

PULSE FOR KEYED AGC (Pin 20) - Positive (function : without video signal: low level, withvideo signal: key pulses)

V

VCO (Pins 17-18 and 19)

PHASE COMPARATOR ϕ 1 (Pin 22)

VCR SWITCHING(Pin 23)

VIDEO IDENTIFICATION (Pin 24)

V

VIDEO IDENTIFICATION (Pin 25)

V

L

H-RAMP GENERATOR (Pin 13)

I

ch13

V

I

dis13

SUPER SANDCASTLE (Pin 11)

V

V

V

T

T

NEGATIVELINE FLY-BACK INPUT (Pin 12)

V

V

Positive Current 0 - 0.75 - 1 nA

26

I

Negative Current 17 25 36 µA

26

Output Current 5mA

I

20

Output Saturation Voltage (I20= 5 mA) 0.25 0.4 V

20

t

Pulse width (synchro pulse is always inside the key pulse) 6.5 8 8.5 µs

k

Frequency control range after line divider
(ceramic resonator : 503 kHz)

15.30 to

16.10

Output Current Low Loop Gain ± 0.35 ± 0.50 ± 0.65 mA
Output Current High Loop Gain ± 1 ± 1.5 ± 2mA
Window Pulse Width 7 10 13 µs

Threshold Voltage VCR Operating 1.7 2.2 2.7 V
Input Current (V23=0VCC= 12V) - 0.030 - 0.25 - 1 mA

I

23

Output Saturation Voltage (without video signal, I24= 3 mA) 0.2 0.6 V

24

Output Voltage (with 60 Hz video signal, I
Output Voltage (with 50 Hz video signal, I

Output Current (charging the capacitor) 0.5 0.75 1 mA

I

25

t

Identification Time (charging the capacitor) 1.3 1.7 2.2 µs

25

Threshold (voltage changing from lower to higher value) 4 4.5 5 V

25

Hysteresis 150 240 400 mV

HYS

= 2.5 mA) 5 6.5 0.6 V

24

=10µA) 11 11.5 7.5 V

24

Charge Current 185 200 215 µA
Base Voltage of Saw-tooth 0.5 V

I13

Discharge Current 3.5 7 mA

Burst Key Pulse Level Output Voltage (I11= - 5mA) 9 V

B11

Line Blanking Pulse Level Output Voltage(I11= - 5mA) 4 4.5 5 V

L11

Frame Blanking Pulse Level OutputVoltage

BT11

(and frame out of function) (I
Delay between Middle of Synch Pulse (pin 27) and Leading

B11

Edge of Burst Key Pulse

= - 5mA)

11

2 2.5 3 V

2.3 3 µs

Duration of Burst Key Pulse 3.7 4 5 µs
Delay between SSC Cutting at Pin 12 and Line Blanking Pulse 0.35 µs

O11

Threshold for SMPS Safety 1.1 V
Threshold for Blanking 11 11.5 12 V

bl12

Threshold for PLL2 - 1 V

ϕ12

I

Input Current 11V < V

12

I

Input Current 1.3V < V12< 11V -3 3 µA

12

I

Input Current 0V < V12< 1.3V 0 -80 µA

12

I

Input Current - 1V < V12<0V 0 -1 -2 mA

12

12

- 200 µA

Line Blanking Trigger 80 µA

kHz

2029C-04.TBL

5/9

TEA2029C

ELECTRICAL OPERATING CHARACTERISTICS (continued)

Symbol Parameter Min. Typ. Max. Unit

PHASE COMPARATOR ϕ2 (Pin 16)

Charging Current 0.4 0.6 0.8 mA

I

16

Delay betweenthe Edges of ϕ1 and ϕ2(f

LINE OUTPUT (OPEN COLLECTOR) (Pin10)

Output Voltage (I

T

Output PulseDuration(when fly-back pulse is with in time T10)(f

10

= 20mA) 1 1.5 V

10max

∆t ϕ2 Phase Range 15 16 19 µs

FRAME LOGIC

Free Running Period (with mute signal) 315 Line
Search Window 247 361 Line
50Hz Window 309 315 Line
60Hz Window 247 276 Line
VCR Mode Window 247 361 Line

FRAME SAW-TOOTH GENERATOR (Pins 3-5)

Saw-tooth Amplitude 2 3 4 V

I5(60) SInternal Current Generator (60Hz on) 12 14 16 µA

Discharging Time (with C = 0.47µF, ∆V < 4V) 50 70 µs

V

Starting Level (0mA < IS< 0mA) 1 1.26 1.4 V

S

Saw-tooth Amplitude (I

= 10mA) 2 3 4 V

S

FRAME FEEDBACK INPUTS (Pins 1-2)

Positive and Negative Input Current (V1-V2) > 25mA for frame blanking

I

1,2

safety

FRAME OUPUT (Pin4)

Output Voltage (0mA < |I
T

ON

max (f

= 500kHz) 36 40 41 µs

VCO

| < 80mA) 10 V

4

Output PhaseRange 0 t

SMPS CONTROL INPUT (Pin 9)

Input Current (V9=V

I

9

)2µA

ref 14

SMPS OUTPUT (Pin 7) - No Relationbetween End of SMPS Pulse (pin 7) and Leading Edge of Line Flyback (pin 12)

Output Voltage (0 < I7< 20mA) 10 V

V

7

T

t

7

ON max(fVCO

Nominal Time (V

= 500kHz) 30 32 34 µs

9=Vref 14

)2631µs

Output PhaseRange 0 t

SAFETY INPUT (Pin 28)

Threshold Voltage (V28=V

V

28

Input Current (if V
during the next line retrace)

28>Vref 14

) 1.15 1.26 1.37 V

ref 14

then SMPS, line and frame are switched off

SWITCH-ON, SWITCH-OFF PROCESSING (Pin15)

I
I

I

dis 15

Charging Current (tC=4µs, T = 64µs) 70 130 µA

ch 15
ch 15

Ratio Charging/discharging 0.8 1 1.2 µA

STARTING SUPPLY VOLTAGE (Pin 8)

V
V
V

SMPS*, Frame andLineStarting (pins7, 10 and 4) 5.25 6.5 V

CC

SMPS Stopping during Line Retrace 5.25 6.5 V

CC

Frame and Line Stopping 5.25 6.5 V

CC

CURRENT REFERENCE (PIn 14)

V

Voltage Reference 1.2 1.26 1.35 V

ref 14

= 500kHz) 1.5 2 2.8 µs

VCO

= 500kHz) 24 26 30 µs

VCO

10 µA

ON max

ON max

3 µA

PP

PP

µs

2029C-05.TBL

6/9

TEA2029C

APPLICATIONWITH TDA8172 FOR B CLASS FRAME POWER AND TEA2261 FOR SECONDARY
SMPSREGULATION

CC2

V

EHT

OUTPUT

VIDEO IDENTIFICATION

S.S.C

VCR

500kHz

18 19 23 11 24

10

HORIZONTAL

VCO

8

CC

V

2

IL

+

LOGIC

DIVIDER

SYNC.

SEPARAT.

27

CC2

V

4

FRAME

MODULAT.

SUPPLY

SWITCHING

REGUL.POWER

9

TDA8172

VERTICAL

AMPLIFIER

BIAS

3

5287

TEA2029C

YOKE

FRAME

INPUT

SAFETY

+140V

+12V

V+

TEA2261

IN OUT

220V

MAINS

VIDEO

2029C-03.EPS

7/9

TEA2029C

COMPLETE APPLICATION WITH B CLASS FRAME POWER

Ω

220

VERTICAL

PHASE

SHIFT

Ω,

+200V

EHT

TRANSFORMER

SMPS

OUTPUT VOLTAGE

Ω

150k

+24V

ADJUST

1kΩ

CC

V

2N1711

27Ω

LINE

BC307

FLYBACK

1kΩ

12V

680Ω

Line

0.7App

Frame Yoke

32mH, 15

1000µF

Ω

2

33kΩ

CC

V

6

NC
4

5

3

TDA8172

7

1nF

2.2
100nF

4

1

13kΩ

10kΩ

3.3kΩ

NC
1

2

TEA2029C

Ω680kΩ150kΩ

470k

100nF

Ω

15nF 10k

FRAME

SAWTOOTH

2.2kΩ

2.7M Ω

200V

5

3

1112

252627 28

15

µF

100

1N4001

+24V

Pin 14

(TEA2029)

1nF

390Ω

VCR

SWITCH

47nF

Ω

1k

1.5kΩ

22nF

3.32kΩ -1%

3.3nF

22nF

10

21

89

13 14

23

16

6

Yoke

1kΩ

µF

220

100nF

15kΩ

470nF

47kΩ

4.7nF

100nF

220nF

100nF

Ω 1Ω

100

ADJUST

VERTICAL AMPLITUDE

SUPER

LINE

FLYBACK

VIDEO

OUTPUT

SANDCASTLE

INPUT

8/9

BY218

SMPS

POWER

TRANSFORMER

17

18

470

19

1.5nF

220Ω

503kHz

220Ω

10µF

Ω

3.3kΩ

µF 10k

BY218

1000µF 22kΩ

1000

STANDBY

MODE SWITCH

470kΩ

CC

V

Adjust

Phase

Horizontal

CC

V

Ω

22k

1.8kΩ

150pF

Ω

7

TO SMPS

CONTROL

20

24

330Ω

Ω

5.6kΩ

5.6k

1N4148

15kΩ

&

50/60Hz

MUTE OUT

8.2kΩ

CC

V

AGC

PULSE

IDENTIFICATION

2029C-04.EPS

22

3.9kΩ

4.7µF 15nF

PACKAGEMECHANICAL DATA

28 PINS- PLASTICDIP

TEA2029C

I

L

E

F

28

114

Dimensions

a1

b

b2

e3

D

e

15

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

a1 0.63 0.025

b 0.45 0.018
b1 0.23 0.31 0.009 0.012
b2 1.27 0.050

D 37.4 1.470
E 15.2 16.68 0.598 0.657

e 2.54 0.100
e3 33.02 1.300

F 14.1 0.555

i 4.445 0.175

L 3.3 0.130

b1

PM-DIP28.EPS

DIP28.TBL

Information furnished isbelieved to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences ofuse of such information nor forany infringement of patentsor other rights of third parties which may result
from itsuse. No licence isgranted by implicationor otherwiseunder any patent orpatent rights ofSGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
information previously supplied.SGS-THOMSON Microelectronics products arenot authorized for useas critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.

 1994 SGS-THOMSON Microelectronics - All Rights Reserved

Purchase of I

2

I

C Patent.Rights to use these components in a I2C system, is granted provided that thesystem conforms to

Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco

The Netherlands- Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

2

C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips

2

the I

C Standard Specifications as defined by Philips.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

9/9