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參數(shù)資料
| 型號： | TDA 4605-3 |
| 廠商： | SIEMENS AG |
| 英文描述： | Control IC for Switched-Mode Power Supplies using MOS-transistors(開關(guān)模式電源控制IC) |
| 中文描述： | 控制芯片的開關(guān)模式電源使用馬鞍山晶體管（開關(guān)模式電源控制集成電路） |
| 文件頁數(shù)： | 6/20頁 |
| 文件大?。?/td> | 557K |
| 代理商： | TDA 4605-3 |
Semiconductor Group
79
TDA 4605-3
Block Diagram
Pin 1
The regulating voltage forwarded to this pin is compared with a stable internal reference voltage
V
R
in the
regulating and overload amplifier
. The output of this stage is fed to the stop comparator. If
the control voltage is rather small at pin 1 an additional current is added by means of current source
which is controlled according the level at pin 7. This additional current is virtually reducing the
control voltage present at pin 1.
Pin 2
A voltage proportional to the drain current of the switching transistor is generated there by the
external RC-combination in conjunction with the
primary current transducer
. The output of this
transducer is controlled by the logic and referenced to the internal stable voltage
V
2B
. If the voltage
V
2
exceeds the output voltage of the regulations amplifier, the logic is reset by the stop comparator
and consequently the output of pin 5 is switched to low potential. Further inputs for the logic stage
are the output for the
start impulse generator
with the stable reference potential
V
ST
and the
supply voltage motor
.
Pin 3
The down divided primary voltage applied there stabilizes the overload point. In addition the logic is
disabled in the event of low voltage by comparison with the internal stable voltage
V
V
in the
primary
voltage monitor
block.
Pin 4
Ground
Pin 5
In the output stage the output signals produced by the logic are shifted to a level suitable for MOS-
power transistors.
Pin 6
From the supply voltage
V
6
are derived a stable internal references
V
REF
and the switching
threshold
V
6A
,
V
6E
,
V
6 max
and
V
6 min
for the
supply voltage monitor
. All references values (
V
R
,
V
2B
,
V
ST
) are derived from
V
REF
. If
V
6
>
V
VE
, the
V
REF
is switched on and switched off when
V
6
<
V
6A
. In addition, the logic is released only for
V
6 min
<
V
6
<
V
6 max
.
Pin 7
The output of the overload amplifier is connected to pin 7. A load on this output causes a reduction
in maximal impulse duration. This function can be used to implement a soft start, when pin 7 is
connected to ground by a capacitor.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA4605-3 | 功能描述:軟開關(guān) PWM 控制器 CTRL IC FOR SWITCH MODE PWR SUPPLIES RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| TDA46053HKLA1 | 制造商:Infineon Technologies AG 功能描述:Controller Switch Mode Power Supply 8-Pin PDIP 制造商:Infineon Technologies AG 功能描述:AC/DC STANDALONE - Rail/Tube 制造商:Infineon Technologies AG 功能描述:IC POWER SUPPLY CONTROLLER 8DIP |
| TDA46053XKLA1 | 制造商:Infineon Technologies AG 功能描述:AC/DC STANDALONE - Rail/Tube |
| TDA4605A | 制造商:STMicroelectronics 功能描述: |
| TDA4605D | 制造商:STMicroelectronics 功能描述: |
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