Newsflash

My dearest friends, Please I am taking this opportunity to praise the relationship between you and Mosopower for ten years. Under your support, Mosopower group is growing in steady; and now is becoming one of the leaders in power industry.
 
Sign up for PayPal and start accepting credit card payments instantly. 8 kB

Featured Products

Led Tunnel Light Power Supply
Led Tunnel Light Power Supply
120Wデスクトップのアダプター
120Wデスクトップのアダプター
180/220/300W Desktop Switching Power Supply
180/220/300W Desktop Switching Power Supply
180W Switching Power Supply | AC/DC SMPS | Open Frame
180W Switching Power Supply | AC/DC SMPS | Open Frame

Random Products

9W Switching Power Supply -AC/DC SMPS Adapter -Wall-Mount
9W Switching Power Supply -AC/DC SMPS Adapter -Wall-Mount
48W Switching Power Supply -AC/DC SMPS Adapter -Desktop
48W Switching Power Supply -AC/DC SMPS Adapter -Desktop
42W Switching Power Supply | AC/DC SMPS | Open Frame
42W Switching Power Supply | AC/DC SMPS | Open Frame
120Wデスクトップのアダプター
120Wデスクトップのアダプター

Home arrow Power Supply Blog arrow Underestimating Complexity of SMPS Design(1 of 5)

Underestimating Complexity of SMPS Design(1 of 5)

Problem

These disastrous results include schedule slips, cost overruns, and excessive field failures, with associated warranty costs. The root of the problem is usually underestimating the complexity of power supply design, especially switching-mode power supplies.

The perception that power supply design is trivial dates from the era when power supplies were usually a transformer-rectifier set and a dissipative series or shunt regulator. The perception was probably not true then and is certainly not true now -- now that most power supplies are of the switching-mode variety.

Because this perception led to inexperienced designers being assigned to the power supply, power supply related problems became severe in the 1970-80 decade. The Navy claimed that if power supplies just met their specifications there would be a 20% improvement in fleet readiness. They dictated that the procurement agency had to investigate if less than 10% of a project development budget was devoted to the power supply development -- an unprecedented action. Projects on an 18 month schedule sat on the shipping dock for another 18 months waiting for a working power supply.

Switching-mode power supplies are:

  • non-linear circuits
  • difficult to stabilize, often having real and complex poles in the right-half plane
  • subject to chaos
  • magnetically complex -- requiring consideration of proximity and eddy current effects and often requiring planar construction
  • analog, digital, and power circuits, requiring knowledge of each discipline
  • sources of electromagnetic interference
  • etc.

They are not a trivial design task.

Do not use this information for design without independent verification of the information.

Editor: Jerrold Foutz

 
< 前へ   次へ >

Product Scroller

EI-41 AC/AC AC/DCアダプタ
EI-41 AC/AC AC/DCアダプタ


15W Switching Power Supply -AC/DC SMPS Adapter -Wall-Mount
15W Switching Power Supply -AC/DC SMPS Adapter -Wall-Mount


72W Desktop Switching Power Supply
72W Desktop Switching Power Supply


24W Switching Power Supply -AC/DC SMPS Adapter -Desktop
24W Switching Power Supply -AC/DC SMPS Adapter -Desktop


17W Switching Power Supply | AC/DC SMPS | Open Frame
17W Switching Power Supply | AC/DC SMPS | Open Frame


150w Desktop Switching Power Supply
150w Desktop Switching Power Supply


90W Switching Power Supply -AC/DC SMPS Adapter -Desktop
90W Switching Power Supply -AC/DC SMPS Adapter -Desktop


Led Tunnel Light Power Supply
Led Tunnel Light Power Supply


8.5W Switching Power Supply | AC/DC SMPS | Open Frame
8.5W Switching Power Supply | AC/DC SMPS | Open Frame


知能充電器
知能充電器


車載充電器
車載充電器


9W Switching Power Supply -AC/DC SMPS Adapter -Wall-Mount
9W Switching Power Supply -AC/DC SMPS Adapter -Wall-Mount


60W Switching Power Supply -AC/DC SMPS Adapter -Desktop
60W Switching Power Supply -AC/DC SMPS Adapter -Desktop


8-100Wオープン・フレーム電源
8-100Wオープン・フレーム電源


EI-48 AC/AC AC/DCアダプタ
EI-48 AC/AC AC/DCアダプタ


180/220/300W Desktop Switching Power Supply
180/220/300W Desktop Switching Power Supply


36W Switching Power Supply -AC/DC SMPS Adapter -Desktop
36W Switching Power Supply -AC/DC SMPS Adapter -Desktop


100/120w Desktop Switching Power Supply
100/120w Desktop Switching Power Supply


Webbieworld SiteWars

Webbieworld Voting

Latest products

Led Tunnel Light Power Supply
Led Tunnel Light Power Supply
 価格はお問合せ下さい
Led Street light Power Supply
Led Street light Power Supply
 価格はお問合せ下さい
180/220/300W Desktop Switching Power Supply
180/220/300W Desktop Switching Power Supply
 価格はお問合せ下さい
150w Desktop Switching Power Supply
150w Desktop Switching Power Supply
 価格はお問合せ下さい
100/120w Desktop Switching Power Supply
100/120w Desktop Switching Power Supply
 価格はお問合せ下さい
90W Desktop Switching Power Supply
90W Desktop Switching Power Supply
 価格はお問合せ下さい
72W Desktop Switching Power Supply
72W Desktop Switching Power Supply
 価格はお問合せ下さい
© 2008 Switching Power Supply(SMPS)-MOSO: Manufacturer&Supplier Specialized In Switching Power Supply.
Original Site Design by new-loong
stats