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參數(shù)資料
| 型號： | ICE1QS01G |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction (PFC) |
| 中文描述： | 控制器開關(guān)電源支持低功耗待機(jī)和功率因數(shù)校正（PFC物料供應(yīng)） |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 484K |
| 代理商： | ICE1QS01G |
ICE1QS01
Version 1.4
14
27
Apr 20
04
Fold back point correction
With increasing mains voltage the switch on time becomes shorter and so the frequency becomes
higher. With higher frequency also the maximal possible output power becomes higher. With higher
power the danger in case of failure increases.
To avoid this, the foldback point correction circuit senses main voltage to reduce the on-time of the
switch. Mains voltage is sensed at the supply coil of V
CC
voltage via a resistor connected to pin RZI.
During on-time of the MOS-FET switch current is pulled out from pin RZI. When this current is
higher than 500 μA, one fifth of the current higher than this threshold is driven into pin PCS to
increase the voltage slope charging the capacitor connected to this pin.
Figure: Fold Back Point Correction
IPCSFO
--------------------------------
IRZI
5
500
uA
>
(
)
,
=
5V
Vpcs with fold back point correction
Vpcs at low mains
voltage
Vpcs at high mains voltage
t0
t1
t2
t3
t
Vpcs
Pmax without fold back point correction
Pmax with fold back point correction
Vmains
Pmax
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICE1QS01GNT | 制造商:Infineon Technologies AG 功能描述:Controller Switch Mode Power Supply 8-Pin DSO |
| ICE1QS01GXT | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 CTRLR SMP SUPPLIES LOW POWER PFC 20V RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ICE1QS01XK | 制造商:Infineon Technologies AG 功能描述:Controller Switch Mode Power Supply 8-Pin PDIP |
| ICE200 | 制造商:Atmel Corporation 功能描述:IN-CIRCUIT EMULATOR |
| ICE2000 | 功能描述:仿真器/模擬器 ICE 2K Univ Emulator RoHS:否 制造商:Blackhawk 產(chǎn)品:System Trace Emulators 工具用于評估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
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