bowman1710
Full Member level 3
Hi Guys
I am going through a forward design and have came across two different equations for it and was unsure about why there is a difference between the two, or what I am doing wrong, my specs are as follows
Bflux:0.1T
Vin min:170
Vinmax:400
fosc:310KHz
Dvsec or Dmax=0.49
Vout:24
core Ae:55mm^2
The first one is:
http://cds.linear.com/docs/en/datasheet/3752fb.pdf
page 39
Second one is
http://www.google.co.uk/search?q=fo...former+design#q=Forward+Converter+Design+Note
(top PDF link (at page 5))
Why am I getting such a difference in primary turns between the two equations, is it a unit issue or something? To get 48T and 116T in difference is a big difference
I am going through a forward design and have came across two different equations for it and was unsure about why there is a difference between the two, or what I am doing wrong, my specs are as follows
Bflux:0.1T
Vin min:170
Vinmax:400
fosc:310KHz
Dvsec or Dmax=0.49
Vout:24
core Ae:55mm^2
The first one is:
http://cds.linear.com/docs/en/datasheet/3752fb.pdf
page 39
Second one is
http://www.google.co.uk/search?q=fo...former+design#q=Forward+Converter+Design+Note
(top PDF link (at page 5))
Why am I getting such a difference in primary turns between the two equations, is it a unit issue or something? To get 48T and 116T in difference is a big difference