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參數(shù)資料
| 型號(hào)： | TDA 4605-3 |
| 廠商： | SIEMENS AG |
| 英文描述： | Control IC for Switched-Mode Power Supplies using MOS-transistors(開(kāi)關(guān)模式電源控制IC) |
| 中文描述： | 控制芯片的開(kāi)關(guān)模式電源使用馬鞍山晶體管（開(kāi)關(guān)模式電源控制集成電路） |
| 文件頁(yè)數(shù)： | 3/20頁(yè) |
| 文件大?。?/td> | 557K |
| 代理商： | TDA 4605-3 |
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Semiconductor Group
76
TDA 4605-3
Pin Definitions and Functions
Pin No.
Function
1
Information Input Concerning Secondary Voltage.
By comparing the
regulating voltage - obtained trom the regulating winding of the transformer - with
the internal reference voltage, the output impulse width on pin 5 is adjusted to the
load of the secondary side (normal, overload, short-circuit, no load).
2
Information Input Regarding the Primary Current.
The primary current rise in
the primary winding is simulated at pin 2 as a voltage rise by means of external
RC-element. When a voltage level is reached thats derived from the regulating
voltage at pin 1, the output impulse at pin 5 is terminated. The RC-element serves
to set the maximum power at the overload point set.
Input for Primary Voltage Monitoring:
In the normal operation
V
3
is moving
between the thresholds
V
3H
and
V
3L
(V
3H
>
V
3
>
V
3L
).
V
3
<
V
3L
: SMPS is switched OFF (line voltage too low).
V
3
>
V
3H
: Compensation of the overload point regulation (controlled by pin 2)
starts at
V
3H
:
V
3L
= 1.7.
3
4
Ground
Output:
Push-pull output provides
±
1 A for rapid charge and discharge of the
gate capacitance of the power MOS-transistor.
Supply Voltage Input:
A stable internal reference voltage
V
REF
is derived from
the supply voltage also the switching thresholds
V
6A
,
V
6E
,
V
6 max
and
V
6 min
for
the supply voltage detector. If
V
6
>
V
6E
then
V
REF
is switched on and swiched off
when
V
6
<
V
6A
. In addition the logic is only enable for
V
6 min
<
V
6
<
V
6 max
.
Input for Soft-Start.
Start-up will begin with short pulses by connecting a
capacitor from pin 7 to ground.
5
6
7
8
Input for the Oscillation Feedback.
After starting oscillation, every zero
transition of the feedback voltage (falling edge) through zero (falling edge)
triggers an output pulse at pin 5. The trigger threshold is at + 50 mV typical.
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| TDA4605-3 | 功能描述:軟開(kāi)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(kāi)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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