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CAGE Code: 5DME2
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- October 30th 2020 -
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Types of Switch Mode Power Transformers



There are 2 types of power supply designs - linear and switching mode. Linear power are bulky but has very low noise and are suitable for medical and some low cost industrial applications. Linear power supply uses lamination transformers that operate at 50 or 60 Hz.

Switch Mode power supplies are compact, and can dleiver very high power in a small size. Almost all power supply designs used today are based Switching Mode. Switch Mode power supplies used high switching frequency. The typical switching frequency in today switch mode power supplies are betweem 100 Khz to 300 Khz. The designs of Switch Mode power supplies are classified by the topologies used. The simpliest are called the RCC ( ringing choke circuit). This is followed by flyback, forward, half bridge, full bridge, push pull, resonant, etc.

As a rule of thumb, the power level and topolgies used are given below.
Flyback: Under 10 watts.
Forward: Under 500 watts.
Half bridge: Under 500 watts
Full Bridge and push pull: Over 500 watts

In a design of the switch mode power supplies, many different types of magnetic components are used. On the input side, there is the differential mode choke, commom mode choke and power factor correction (PFC) choke. Then, teh main power transformer, drive transformers, current sensors, auxillary transformers, MAG AMP chokes, output chokes, etc. Please see the drawing below indicating various types of magnetics used.

CWS can make all these magnetic components for you. Just send us your specifications, and we will do the rest.

Please click this link to see a sample Switch Mode Power circuit

 

 

 

Disclaimer: Coil Winding Specialist, Inc., its affiliates, agents, and employees acting on behalf of Coil Winding Specialist, Inc. (collectively, CWS) disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice. CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.

WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go towww.P65Warnings.ca.gov.


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Copyright 2008, Coil Winding Specialist, Inc
Updated July, 2013

CAGE Code: 5DME2(Registered with www.ccr.gov)