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參數(shù)資料
| 型號： | TEA2028-TEA2029 |
| 廠商： | 意法半導體 |
| 英文描述： | APPLICATION NOTE |
| 中文描述： | 應用筆記 |
| 文件頁數(shù)： | 31/47頁 |
| 文件大?。?/td> | 532K |
| 代理商： | TEA2028-TEA2029 |
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2
4
70
μ
A
1k
100k
1nF
Frame
Yoke
1.26V
1.26V
S.S.C.
(Pin 11)
FrameBlanking
Output
(with safety)
≥
1
&
Frame
Reset
(2
μ
s)
Q
R
S
Frame
Blanking
(no safety)
0
I
2
V
2
0
1
1/1k
-70
μ
A
1.9V
1/1k
Input Characteristics
Frame
Yoke
Current
(1.26V)
Flyback
V
2
2
Figure 61 :
BlockDiagram
V.7 - SWITCHING POWERSUPPLY DRIVER STAGE
Switching takes place on the primary side (mains
side) of a transformer by using TEA2164 SMPS
Controller manufacturedby SGS-THOMSON.
Requiredvoltage valuesareobtainedby rectifying
different voltage outputs deliveredthrough secon-
dary windings. The horizontal deflection stage is
poweredbyoneof theseoutputsdelivering around
hundred volts.
This voltage source must be regulated since any
voltage fluctuation will yield variations of the hori-
zontal displayamplitude.
The TE2028 monitors this voltage and transmits
the regulation signal to the primary controller cir-
cuitry via a small pulse transformer. The charac-
teristics of this regulationsignal aredirectly related
to the conductionperiod of switching transistor.
V.7.1- Powersupply block diagram
Figure62
7
9
14
TEA2164
12V
LineDeflection
Stage
Mains
Input
P
A
V
REF
1.26V
13
M1
M2
x 1
&
28
μ
s
Window
START-UP
CIRCUITRY
SAFETY
FLIP-FLOP
1.26V
15
28
135V
TEA2028B
Line
Sawtooth
2
TEA2028 - TEA2029 APPLICATIONNOTE
31/46
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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