參數(shù)資料
型號(hào)： TOP249FN-TL
廠商： POWER INTEGRATIONS INC
元件分類： 穩(wěn)壓器
英文描述： 8.64 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
封裝： LEAD FREE, PLASTIC, TO-262, 7/6 PIN
文件頁(yè)數(shù)： 12/52頁(yè)
文件大?。?/td> 2175K
代理商： TOP249FN-TL
TOP242-250
N
4/05
2
Section List
Functional Block Diagram ....................................................................................................................................... 3
Pin Functional Description ...................................................................................................................................... 4
TOPSwitch-GX
Family 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 Amplier ......................................................................................................................................................... 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
MAX Reduction .............................................................................................................. 8
Remote ON/OFF and Synchronization ................................................................................................................... 9
Soft-Start................................................................................................................................................................. 9
Shutdown/Auto-Restart........................................................................................................................................... 9
Hysteretic Over-Temperature Protection................................................................................................................. 9
Bandgap Reference.............................................................................................................................................. 10
High-Voltage Bias Current Source........................................................................................................................ 10
Using Feature Pins ................................................................................................................................................... 10
FREQUENCY (F) Pin Operation........................................................................................................................... 10
LINE-SENSE (L) Pin Operation ............................................................................................................................ 10
EXTERNAL CURRENT LIMIT (X) Pin Operation.................................................................................................. 11
MULTI-FUNCTION (M) Pin Operation .................................................................................................................. 11
Typical Uses of FREQUENCY (F) Pin ...................................................................................................................... 14
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins ...................................................... 15
Typical Uses of MULTI-FUNCTION (M) Pin ........................................................................................................... 17
Application Examples .............................................................................................................................................. 20
A High Efciency, 30 W, Universal Input Power Supply........................................................................................ 20
A High Efciency, Enclosed, 70 W, Universal Adapter Supply.............................................................................. 20
A High Efciency, 250 W, 250-380 VDC Input Power Supply ............................................................................... 22
Multiple Output, 60 W, 185-265 VAC Input Power Supply .................................................................................... 23
Processor Controlled Supply Turn On/Off............................................................................................................. 24
Key Application Considerations ............................................................................................................................. 26
TOPSwitch-II vs. TOPSwitch-GX.......................................................................................................................... 26
TOPSwitch-FX vs. TOPSwitch-GX ....................................................................................................................... 28
TOPSwitch-GX Design Considerations ............................................................................................................... 28
TOPSwitch-GX Layout Considerations................................................................................................................. 30
Quick Design Checklist......................................................................................................................................... 32
Design Tools ......................................................................................................................................................... 32
Product Specications and Test Conditions ......................................................................................................... 33
Typical Performance Characteristics .................................................................................................................... 40
Part Ordering Information ....................................................................................................................................... 46
Package Outlines ..................................................................................................................................................... 47
相關(guān)PDF資料
PDF描述
TOP246F-TL 4.32 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TOP249F-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
TOP249G- 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
TOP249GN- 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
TOP249GN-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
TOP249G-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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