Design of Switch Mode Power Supplies


Switch Mode Power Supplies | Copyrights | What is that everything?


The following programs calculate the relevant currents and voltages for various switch mode power supplies and display these graphically.
Furthermore the programs give suggestions for appropriate choking coils and high frequency transformers.

Description Type of power supply Help  
The input voltage is converted into a lower output voltage. Buck Converter Help with the Buck/Step-down Converter
The input voltage is converted into a higher output voltage. Boost converter Help for the
Boost converter
The input voltage is converted into a negative voltage. Buck-Boost
converter
Help for the
Buck-Boost
Several isolated output voltages, up to approx. 250 are possible. Flyback converter Help for the
Flyback converter
One electrically isolated voltage, up to approx. 100 Watts. Single Transistor
Forward converter
Help for the
Single Transistor
Forward converter
One electrically isolated voltage, up to approx. 1 KW. Two-Transistor
Forward converter
Help for the
Two-Transistor Forward Converter
One electrically isolated voltage, up to few KW. Half-Bridge
Push-Pull Converter
Help for the
Half-Bridge
Push-Pull Converter
One electrically isolated voltage, up to many KW. Full-Bridge
Push-Pull converter
Help for the
Full-Bridge
Push-Pull converter
Switch mode power suppply for sinusoidal mains current. Power Factor Pre-regulator (PFC) Help for the
Power Factor
Pre-regulator
Calculation of a inductor L for a max. current I. Inductor
calculation
Help with the
Inductor
calculation


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Note!

Circuits and procedures are indicated without consideration for the patent position.
For commercial use make sure if necessary of all existing requirements for protection.
The playback of customs name, trade name, trade marks etc.. on these pages entitled also without special indication not to the acceptance to the fact that such names in the sense of the registered trade mark and trademark acts would be to be regarded as free and therefore by everyone may use. These pages are protected in copyright matters . All rights, also those the translation or the duplication of the pages, or sections from it, are reserved.
No part of these pages may be reproduced without written permission from the authors. Offences are subject to penal provisions of the copyright law.
The contents of these pages were carefully compiled. The authors for the correctness of specification, notes or pieces of advice nevertheless do not take over adhesion.


What is that everything?

Primarily this Website was written for people who know the basics of switchmode power supplies. We did not consider the control of the transistors, as well as certain preventive measures (discharge sets, current limitings).
The suggestions for the ferrite cores are approximations based on the manufacturer tables as well as the books Hirschmann/Hauenstein: Schaltnetzteile [1] and Keith Billings: Switch Mode Power Supply Handbook [2]. Check in any case the specification given by us with the appropriate data sheets.



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Start of page | Switched mode power supplies | Copyrights |

Updated on Jan.25/2006


By Dr. Heinz Schmidt-Walter , Holger Wenzel, Thomas Zänker, Richard Morgan and Johnalan Kegan.