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jbright
jbright
Associate
October 30, 2014
Question

L6561/L6562 MathCad design tool

  • October 30, 2014
  • 1 reply
  • 734 views
Posted on October 30, 2014 at 22:06

The document AN1089 CONTROL LOOP MODELING OF L6561-BASED TM PFC by Claudio Adragna says:

''As a tool to ease the design of L6561�s E/A compensation networks in TM boost PFC preregulators, the Appendix contains a Mathcad� file gathering the theory above illustrated and performing all the necessary calculations''

Is the actual MathCad file available for download anywhere or do I have to recreate it myself from the printout?

#l6561-l6562
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1 reply

jbright
jbrightAuthor
Associate
November 5, 2014
Posted on November 05, 2014 at 20:36

I've tried copying from the printout but it doesn't work. 

For C3:=10^6/(2*pi*R12*p*z) , I get 0.154 second-farads, while their mathcad thing says 2.271e3 nF.  Ignoring the units and orders of magnitude, how do they get 2.27??

10^6/(2*pi*300*0.23*15) = 153.773

I don't understand.
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