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power 设计实例

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power  设计实例power  设计实例power  设计实例power  设计实例

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Title
Specification
Customer
Application
Author
Document Number
Date
Revision
Engineering Report – 65W Single Output
Adapter, iW2210
Input: 90 – 265 V
AC
Output: 19V / 3.5A @65W max.
Various
Adapter for Various Applications
iWatt Applications Department
AE-4003
July 11, 2005
NR
Summary and Features
Compact size (100 x 41.5 x 25mm)
Designed to achieve low cost & part count
Designed to meet both conducted & radiated EMI requirements
A Production ready model that meets safety requirements
iWatt, Inc.
90 Albright Way,
Los Gatos, CA 95032-1827 USA.
Tel: 408-374-4200 Fax: 408-341-0455
www.iwatt.com
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
(广告勿扰100%拒绝水贴,10名疯狂工程师运营的½站,有问必答)
AE-4003
iW2210, 65W Single Output Adapter
Date :
July 11,2005
Page 2 of 31
Rev : NR
Table Of Contents
1
2
3
4
5
6
Power Supply Specification ............................................................................................. 6
Schematic........................................................................................................................ 7
Circuit Description ........................................................................................................... 8
Bill of Materials ................................................................................................................ 9
PCB Layout ................................................................................................................... 11
Transformer Specification.............................................................................................. 12
6.1
6.2
6.3
6.4
6.5
6.6
7
Bobbin Outline ...................................................................................................... 12
Electrical Diagram ................................................................................................ 12
Electrical Specifications ........................................................................................ 12
Construction ......................................................................................................... 13
Materials ............................................................................................................... 13
Others Assembly Details ...................................................................................... 14
Inductor Specification .................................................................................................... 14
7.1
7.2
7.3
CM Inductor (L2)................................................................................................... 14
Output Filter Inductor (L3) .................................................................................... 15
CM Inductor (L4)................................................................................................... 15
8
Static Electrical Performance ........................................................................................ 16
8.1
8.2
8.3
Efficiency .............................................................................................................. 16
No-load Input Power............................................................................................. 16
Regulation ............................................................................................................ 17
8.3.1 Load ...........................................................................................................17
8.3.2 Line ............................................................................................................ 17
8.4
8.5
Output V-I Characteristics Curve .......................................................................... 18
Ripple and Noise Voltage ..................................................................................... 19
8.5.1 Output ripple voltage .................................................................................. 20
8.5.2 Output ripple waveform .............................................................................. 20
9
Thermal Performance.................................................................................................... 21
10 Transient Performance .................................................................................................. 22
10.1 Inrush Current....................................................................................................... 22
10.2 Start Up & Turn on Delay ..................................................................................... 23
10.3 Shut Down & Hold Up Time.................................................................................. 24
iWatt, Inc.
90 Albright Way, Los Gatos, CA 95032-1827 USA. Tel: 408-374-4200 Fax: 408-341-0455
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
www.iwatt.com
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
(广告勿扰100%拒绝水贴,10名疯狂工程师运营的½站,有问必答)
AE-4003
iW2210, 65W Single Output Adapter
Date :
July 11,2005
Page 3 of 31
Rev : NR
10.4 Dynamic Load Response ..................................................................................... 25
11 Protection Circuit ........................................................................................................... 26
11.1 Over Current Protection........................................................................................ 26
11.2 Short Circuited Protection..................................................................................... 26
11.3 Over Voltage Protection ....................................................................................... 26
12 Major Operational Waveform......................................................................................... 27
12.1 Drain Voltage and Current, Max Load .................................................................. 27
12.2 Drain Voltage and Current during Start-up ........................................................... 28
13 EMC Test ...................................................................................................................... 29
13.1 Conducted EMI..................................................................................................... 29
13.2 Power Line Transient............................................................................................ 30
14 Revision History............................................................................................................. 31
iWatt, Inc.
90 Albright Way, Los Gatos, CA 95032-1827 USA. Tel: 408-374-4200 Fax: 408-341-0455
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
www.iwatt.com
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
(广告勿扰100%拒绝水贴,10名疯狂工程师运营的½站,有问必答)
AE-4003
iW2210, 65W Single Output Adapter
Date :
July 11,2005
Page 4 of 31
Rev : NR
Important Note: (Read this before using this document)
This document and the information provided herein are solely for design and engineering
reference (includes safety and related requirements). iWatt is not responsible for any claim of
damage resulting from the use of these materials.
This test report describes a 65W converter which utilizes iWatt 2210, an advanced digital PWM
controller that delivers 19V, 3.5A (or 65W) of power.
This design aims for low cost and meets EMI and most Immunity requirements.
The following information is included in this test report: schematic, bill of materials, transformer
documentation, printed circuit layout and performance data. For additional information please
email
sales@iwatt.com
or visit our website at
http://www.iwatt.com.
iWatt, Inc.
90 Albright Way, Los Gatos, CA 95032-1827 USA. Tel: 408-374-4200 Fax: 408-341-0455
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
www.iwatt.com
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
(广告勿扰100%拒绝水贴,10名疯狂工程师运营的½站,有问必答)
AE-4003
Finished Assembly
iW2210, 65W Single Output Adapter
Date :
July 11,2005
Page 5 of 31
Rev : NR
Component side (Top)
Solder side (Bottom).
iWatt, Inc.
90 Albright Way, Los Gatos, CA 95032-1827 USA. Tel: 408-374-4200 Fax: 408-341-0455
张飞实战电子官方½站:www.zhangfeidz.com
☜点击打开
www.iwatt.com
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