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參數資料
型號： TOP247F
英文描述： SMPS Controller
中文描述： 開關電源控制器
文件頁數： 2/52頁
文件大小： 457K
代理商： TOP247F
TOP242-250
2
H
9/02
Design Tools .........................................................................................................................................................33
Package Outlines
......................................................................................................................................................45
Section List
Functional Block Diagram
......................................................................................................................................... 3
Pin Functional Description
........................................................................................................................................ 4
TOPSwitch-GXFamily Functional Description
........................................................................................................5
CONTROL (C) Pin Operation .................................................................................................................................6
Oscillator and Switching Frequency .......................................................................................................................6
Pulse Width Modulator and Maximum Duty Cycle .................................................................................................7
Light Load Frequency Reduction............................................................................................................................7
Error Amplifier.........................................................................................................................................................7
On-chip Current Limit with External Programmability .............................................................................................7
Line Under-Voltage Detection (UV) ........................................................................................................................8
Line Overvoltage Shutdown (OV)...........................................................................................................................8
Line Feed Forward with DC
Reduction ..............................................................................................................8
Remote ON/OFF and Synchronization ...................................................................................................................9
Soft-Start ................................................................................................................................................................9
Shutdown/Auto-Restart ..........................................................................................................................................9
Hysteretic Over-Temperature Protection ................................................................................................................9
Bandgap Reference................................................................................................................................................9
High-Voltage Bias Current Source........................................................................................................................10
Using Feature Pins
.................................................................................................................................................... 11
FREQUENCY (F) Pin Operation........................................................................................................................... 11
LINE-SENSE (L) Pin Operation............................................................................................................................ 11
EXTERNAL CURRENT LIMIT (X) Pin Operation ................................................................................................. 11
MULTI-FUNCTION (M) Pin Operation ..................................................................................................................12
Typical Uses of FREQUENCY (F) Pin
......................................................................................................................15
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins
.......................................................16
Typical Uses of MULTI-FUNCTION (M) Pin
.............................................................................................................19
Application Examples
...............................................................................................................................................21
A High Efficiency, 30 W, Universal Input Power Supply........................................................................................21
A High Efficiency, Enclosed, 70 W, Universal Adapter Supply..............................................................................22
A High Efficiency, 250 W, 250 - 380 VDC Input Power Supply.............................................................................23
Multiple Output, 60 W, 185 - 265 VAC Input Power Supply..................................................................................24
Processor Controlled Supply Turn On/Off ............................................................................................................25
Key Application Considerations
..............................................................................................................................27
TOPSwitch-II
vs.
TOPSwitch-GX..........................................................................................................................
27
TOPSwitch-FX vs. TOPSwitch-GX .......................................................................................................................
28
TOPSwitch-GX
Design Considerations ................................................................................................................29
TOPSwitch-GX
Layout Considerations.................................................................................................................31
Quick Design Checklist.........................................................................................................................................31
Product Specifications and Test Conditions
..........................................................................................................34
Typical Performance Characteristics
......................................................................................................................41
Part Ordering Information
........................................................................................................................................45
相關PDF資料
PDF描述
TOP247R-TL SMPS Controller
TOP248F SMPS Controller
TOP248R-TL SMPS Controller
TOP249F SMPS Controller
TOP249R-TL SMPS Controller
相關代理商/技術參數
參數描述
TOP247F- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP247FN 功能描述:交流/直流開關轉換器 125 W 85-265 VAC 165 W 230 VAC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel
TOP247FN- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP247FN-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP247F-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
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