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使用TOP269EG设计的65W适配器

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  • 日期: 2018-03-02
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标签: TOP269EG电源设计

电源设计的参考设计:使用TOP269EG设计的65 W适配器,感兴趣的可以看看。

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Design Example Report Title 65 W Adapter Using TOPSwitchTMJX TOP269EG Notebook Adapter Applications Engineering Department Specification 90 VAC 265 VAC Input 19 V 342 A Output Application Author Document Number Date Revision January 19 2010 14 DER243 Summary and Features Highly energy efficient Very low noload input power 90 mW at 230 VAC High fullload efficiency 86 at 90 VAC 60 Hz High average efficiency 895 Very compact low partscount design Internal cu......

Design Example Report Title 65 W Adapter Using TOPSwitchTM-JX TOP269EG Notebook Adapter Applications Engineering Department Specification 90 VAC – 265 VAC Input; 19 V, 3.42 A Output Application Author Document Number Date Revision January 19, 2010 1.4 DER-243 Summary and Features  Highly energy efficient  Very low no-load input power: <90 mW at 230 VAC  High full-load efficiency: >86% at 90 VAC / 60 Hz  High average efficiency: >89.5%  Very compact, low parts-count design  Internal current limit reduction eliminates need for current limit on secondary-side  Primary side latching overvoltage protection (OVP) eliminates second optocoupler  132 kHz operation reduces transformer size, reducing cost and improving efficiency  Hysteretic thermal protection  Excellent transient load response  Latching overvoltage protection  80% MOSFET BV de-rating at 65 W and 240 VAC PATENT INFORMATION The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at . Power Integrations 5245 Hellyer Avenue, San Jose, CA 95138 USA. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 19-Jan-10 4.1  4.1.1  4.1.2  4.1.3  4.1.4  4.1.5  4.1.6  DER-243 65 W Standard Adapter TOP269EG Table of Contents 1  Introduction ................................................................................................................. 4  2  Power Supply Specification ........................................................................................ 6  3  Schematic ................................................................................................................... 7  4  Circuit Description ...................................................................................................... 8  Key Design Decisions ......................................................................................... 8  PI part selection ........................................................................................... 8  Increased Line Sense Resistor Values ......................................................... 8  Clamp Configuration Selection – RZCD vs RCD .......................................... 8  Feedback configuration ................................................................................ 8  Output Rectifier Choice ................................................................................ 8  Increased output overvoltage shutdown sensitivity ...................................... 9  Input EMI and Rectification Stage ....................................................................... 9  4.2  4.3  TOPSwitch-JX Primary ........................................................................................ 9  4.4  Clamp Configuration ............................................................................................ 9  4.5  Thermal Overload Protection ............................................................................. 10  4.6  Output Overvoltage Protection .......................................................................... 10  4.7  Line Under-voltage lockout ................................................................................ 10  4.8  Output Power Limiting with Line Voltage ........................................................... 11  4.9  Output Rectification and Filtering ...................................................................... 11  4.10  Output Feedback ............................................................................................... 11  5  PCB Layout .............................................................................................................. 13  6  Bill of Materials ......................................................................................................... 14  7  Common Mode Choke Specification (L3) ................................................................. 16  7.1  Electrical Specifications ..................................................................................... 16  7.2  Materials ............................................................................................................ 16  7.3  Winding instructions .......................................................................................... 16  Illustrations ........................................................................................................ 16  7.4  8  Common Mode Choke Specification (L4) ................................................................. 17  8.1  Electrical Specifications ..................................................................................... 17  8.2  Materials ............................................................................................................ 17  8.3  Winding instructions .......................................................................................... 17  8.4  Illustrations ........................................................................................................ 17  Transformer Specification ......................................................................................... 18  Electrical Diagram ............................................................................................. 18  9.1  9.2  Electrical Specifications ..................................................................................... 18  9.3  Materials ............................................................................................................ 18  Transformer Build Diagram ............................................................................... 19  9.4  Transformer Construction .................................................................................. 20  9.5  Transformer Design Spreadsheet ......................................................................... 21  Mechanical Parts Specification ............................................................................. 25  11.1  eSIP Heat Sink .................................................................................................. 25  11.2  Bridge Heat Sink ............................................................................................... 26  11.3  Output Diode Heat Sink ..................................................................................... 27  Insulator ............................................................................................................. 28  11.4  9  10  11  Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 2 of 55 19-Jan-10 DER-243 65 W Standard Adapter TOP269EG 12  15  11.5  Heat Spreader ................................................................................................... 29  Performance Data ................................................................................................. 30  12.1  Active Mode Efficiency ....................................................................................... 30  12.2  Energy Efficiency Requirements ........................................................................ 32  12.2.1  USA Energy Independence and Security Act 2007 .................................... 32  12.2.2  ENERGY STAR EPS Version 2.0 ............................................................... 33  12.3  No-load Input Power .......................................................................................... 34  12.4  Available Standby Output Power ....................................................................... 35  12.5  Regulation ......................................................................................................... 36  12.5.1  Load ........................................................................................................... 36  12.5.2  Line ............................................................................................................. 37  12.6  Efficiency ........................................................................................................... 38  12.6.1  Line ............................................................................................................. 38  13  Thermal Performance ............................................................................................ 39  14  Waveforms ............................................................................................................ 41  14.1  Drain Voltage and Current, Normal Operation ................................................... 41  14.2  Drain Voltage and Current Start-up Profile ........................................................ 41  14.3  Output Voltage Start-up Profile .......................................................................... 42  14.4  Output Short and OCP ....................................................................................... 43  14.5  Overvoltage Protection (Open Loop Test) ......................................................... 44  14.6  Load Transient Response .................................................................................. 45  14.7  Output Ripple Measurements ............................................................................ 46  14.7.1  Ripple Measurement Technique ................................................................. 46  14.7.2  Ripple and Noise Measurement Results .................................................... 47  Control Loop Measurements ................................................................................. 48  15.1  115 VAC Maximum Load ................................................................................... 48  15.2  230 VAC Maximum Load ................................................................................... 49  Conducted EMI ..................................................................................................... 50  Revision History .................................................................................................... 54  16  17  Important Note: Although this board is designed to satisfy safety isolation requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an isolation transformer to provide the AC input to the prototype board. Page 3 of 55 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-243 65 W Standard Adapter TOP269EG 19-Jan-10 Introduction 1 This engineering report describes a notebook adapter power supply employing the Power Integrations TOPSwitch-JX TOP269EG. This power supply operates over a universal input range and provides a 19 V, 65 W output. It has been designed and tested to operate in a sealed enclosure in an external ambient temperature environment of up to +40 °C. The TOPSwitch-JX, by design, maintains virtually constant efficiency across a very wide load range without using special operating modes to meet specific load thresholds. This optimizes performance regulations. Maintaining constant efficiency ensures design optimization for future energy-efficiency regulation changes without the need for redesign. The low MOSFET capacitance of TOPSwitch-JX allows a higher switching frequency without the efficiency penalty which occurs with standard discrete MOSFET. The 132 kHz switching frequency (rather than the 60 kHz to 80 kHz frequency used for a discrete MOSFET) reduces the transformer size required, and so reduces cost. This power supply offers the following protection features: for existing and emerging energy-efficiency  Output OVP with latching shutdown  Latching open-loop protection  Auto-recovery type overload protection  Auto-restart during brownout or line sag conditions  Accurate thermal overload protection with auto-recovery, using a large hysteresis This document provides complete design details including specifications, the schematic, bill of materials, and transformer design and construction information. This information includes performance results pertaining to regulation, efficiency, standby, transient load, power-limit data, and conducted EMI scans. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 4 of 55 19-Jan-10 DER-243 65 W Standard Adapter TOP269EG Figure 1 – Populated Circuit Board Photographs. Figure 2 – Assembly Unit with Heat Spreader. Page 5 of 55 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com
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