參數(shù)資料
型號(hào)： TEA2028-TEA2029
廠商： 意法半導(dǎo)體
英文描述： APPLICATION NOTE
中文描述： 應(yīng)用筆記
文件頁(yè)數(shù)： 3/47頁(yè)
文件大?。?/td> 532K
代理商： TEA2028-TEA2029
TEA2029
VII
VII.1
VII.2
VII.3
VII.4
VII.5
VII.6
VII.7
TEA2029: DIFFERENCES WITH TEA2028
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .
PIN BY PIN DIFFERENCES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEA2029CPIN CONNEXTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRAME PHASE MODULATOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRAME BLANKINGSAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-CHIPLINE FLIP-FLOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AGC KEY PULSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37
37
37
37
37
38
39
40
VIII
APPLICATION INFORMATION ON FRAME SCANNING
IN SWITCHED MODE
(TEA2029 ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUNDAMENTALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERALDESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TYPICAL FRAME MODULATOR AND FRAME OUTPUT WAVEFORMS . . . . . . . . . . .
FRAME POWER STAGE WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRAME FLYBACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FEED-BACK CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frame Powerin Quasi-bridgeConfiguration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Choice of ”R” value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Influenceof R3 value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
”S” Correctioncircuit in quasi-bridgeconfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frame Scanningin Switched Mode using CouplingCapacitor. . . . . . . . . . . . . . . . . . . .
Frame Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRAME SCANNING IN CLASS B (WITH FLYBACKGENERATOR) . . . . . . . . . . . . . . .
ApplicationDiagram . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40
40
40
41
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45
45
VIII.1
VIII.2
VIII.3
VIII.4
VIII.5
VIII.6
VIII.6.1
VIII.6.1.1
VIII.6.1.2
VIII.6.1.3
VIII.6.2
VIII.6.3
VIII.7
VIII.7.1
IX
TEA2029APPLICATION DIAGRAM COMPLETE APPLICATION WITH TEA2164
. . .
46
I - GENERAL DESCRIPTION
As depictedin Figure1, the TEA2028 combines3
major functionsof a TV set asfollows :
- Horizontal (line) and vertical (frame) time base
generationfor spot deviation.The video signal is
used for the synchronizationof both time bases.
- On-chip switching power supply controller syn-
chronizedon line frequency.
This integrated circuit has been implemented in
bipolar I
2
L technology, and various functions are
digitally processed. In fact, resorting to logic func-
tions has the advantageof working with pure and
accurate signals while full benefit is drawn from
high integration of logic gates (approx. 110 gates
per mm
2
).
The main objectiveisto drive allfunctionsusingan
accuratetime basegeneratedby amaster500kHz
oscillator.
Also, horizontal and vertical time bases, are ob-
tained by binary division of reference frequency.
This has the advantageof eliminatingthe 2 adjust-
ments whichwere necessaryin formerdevices.
One sectionof this integratedcircuit is designedto
drivea switchingpowersupplyof recent implemen-
tation called ”master-slave”. Switching takes place
on the primary side (i.e., directly on mains) of a
transformer. The device ensures
SMPS Control
,
Start-up
and
Protection
functions.Controlsignals
go through a smallpulse transformer therebypro-
viding full isolation from mains supply.
This newapproachfullyeliminatesthe bulkymains
transformersused in the past. In addition,it offers
optimized power consumptionand reduction of TV
cost-price.
TEA2028 - TEA2029 APPLICATIONNOTE
3/46
相關(guān)PDF資料
PDF描述
TEA2028 APPLICATION NOTE
TEA2028B SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT
TEA2128 SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT
TEA2164S SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT
TEA2029C COLOR TV SCANNING AND POWER SUPPLY PROCESSOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TEA2029 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:APPLICATION NOTE
TEA2029C 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:COLOR TV SCANNING AND POWER SUPPLY PROCESSOR
TEA2029CV 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Timing Processor (LINE, FRAME, SMPS) for TV Sets
TEA2031A 功能描述:視頻 IC East/West Correction RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TEA2031A_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:COLOR TV EAST-WEST CORRECTION
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