- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384963 > TDA 4605-3 (SIEMENS AG) Control IC for Switched-Mode Power Supplies using MOS-transistors(開關(guān)模式電源控制IC) PDF資料下載
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)： | 7/20頁 |
| 文件大小： | 557K |
| 代理商： | TDA 4605-3 |
Semiconductor Group
80
TDA 4605-3
Pin 8
The zero detector controlling the logic block recognizes the transformer being discharged by
positive to negative zero crossing of pin 8 voltage and enables the logic for a new pulse. Parasitic
oscillations occurring at the end of a pulse cannot lead to a new pulse (double pulsing), because an
internal circuit inhibits the zero detector for a finite time
t
UL
after the end of each pulse.
Start-Up Behaviour
The start-up behaviour of the application circuit per sheet 88 is represented an sheet 90 for a line
voltage barely above the lower acceptable limit time
t
0
the following voltages built up:
–
V
6
corresponding to the half-wave charge current over
R
1
–
V
2
to
V
2 max
(typically 6.6 V)
–
V
3
to the value determined by the divider
R
10
/
R
11
.
The current drawn by the IC in this case is less than 1.6 mA.
If
V
6
reaches the threshold
V
6E
(time point
t
1
), the IC switches on the internal reference voltage. The
current draw max. rises to 12 mA. The primary current- voltage reproducer regulates
V
2
down to
V
2B
and the starting impulse generator generates the starting impulses from time point
t
5
to
t
6
. The
feedback to pin 8 starts the next impulse and so on. All impulses including the starting impulse are
controlled in width by regulating voltage of pin 1. When switching on this corresponds to a short-
circuit event, i.e.
V
1
= 0. Hence the IC starts up with "short-circuit impulses" to assume a width
depending on the regulating voltage feedback (the IC operates in the overload range). The IC
operates at the overload point. Thereafter the peak values of
V
2
decrease rapidly, as the starting
attempt is aborted (pin 5 is switched to low). As the IC remains switched on,
V
6
further decreases
to
V
6
. The IC switches off;
V
6
can rise again (time point
t
4
) and a new start-up attempt begins at
time point
t
1
. If the rectified alternating Iine voltage (primary voltage) collapses during load,
V
3
can
fall below
V
3A
, as is happening at time point
t
3
(switch-on attempt when voltage is too low). The
primary voltage monitor then clamps
V
3
to
V
3S
until the IC switches off (
V
6
<
V
6A
). Then a new start-
up attempt begins at time point
t
1
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA 4605 | Control Circuit for Switch Mode Power Supplies Using MOS Transistors(用于開關(guān)電源的控制電路) |
| tDa 6060b | Multistandard Modulator with PLL(帶有鎖相環(huán)的多重標(biāo)準(zhǔn)調(diào)制器) |
| tda 6060G | Multistandard Modulator / PLL(帶有鎖相環(huán)的多重標(biāo)準(zhǔn)調(diào)制器) |
| tda 6060xS | Multistandard Modulator / PLL(帶有鎖相環(huán)的多重標(biāo)準(zhǔn)調(diào)制器) |
| tda 6151 | Satellite-Video IC(衛(wèi)星視頻芯片) |
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: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。