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IRIStran Transformer design Spreadsheet Revision 1.0 (7/10/01)

NOTE: Read N10!" #$%&'a Transformer *esign for the IRIS"0++ Series

IN,-T NOTES RNINS O-T,-T -NITS O22ENTS

INPUT REQUIRED PARAMETERS

VACmin 90 Volts Minimum AC Line input

DCripple 30 Volts Ripple Voltae on input !apa!itor 

Dm 0"# Ma$imum Dut% C%!le

Cres #& p' Value o( resonant !apa!itor 

'min &0 )*+ Minimum operatin (re,uen!%

η 0"- Estimate. E((i!ien!% /0"10"-92

Vo # Volts Re,uire. Main 4utput Voltae

Iout 5  Amps Re,uire. Main 4utput Current

V(. 0" Volts Main ouput .io.e (or6ar. 7oltae

V!! & Volts Desire. V!! 8ias 7oltae /&10V2

V(.7!! Volts :ias .io.e (or6ar. 7oltae

Vo Volts n. 4utput Voltae

V(. Volts n. 4utput Dio.e (or6ar. 7oltae

Iout  Amps n. 4utput Current

Vo3 Volts 3r. 4utput Voltae

V(.3 Volts 3r. 4utput Dio.e (or6ar. 7oltae

Iout3  Amps 3r. 4utput Current

Vo5 Volts 5t; 4utput Voltae

V(.5 Volts 5t; 4utput Dio.e (or6ar. 7oltae

Iout5  Amps 5t; 4utput Current

$errite ore information

Core T%pe EER-L TD< PC50EER-L1=

 Ae 0"-5 !m> E((e!ti7e Cross1se!tional Area

Le "## !m E((e!ti7e Maneti! pat; lent;

#0 n*?turn> In.u!tan!e 'a!tor 

:@ "- mm  A!tual 8o88in 6in.in 6i.t;

M 3 mm Re,uire. Sa(et% Marin @i.t;

L Num8er o( Primar% 6in.in la%ers

Ns 9 turns

,rimar& ,arameters

Vmin 9 Volts

Po &3" @ Total 4utput Po6er 

Ia7 0"- A  A7erae primar% !urrent

Ip 3"5 A Pea) primar% !urrent

Irms "3 A RMS primar% !urrent

Transformer ,rimar&

Lp 239 Primar% In.u!tan!e

Np 56 turns Num8er o( Primar% 6in.in turns

N8 10 turns Num8er o( :ias/V!!2 6in.in turns

& n*?turn> E((e!ti7e In.u!tan!e (a!tor 

:m 03 auss Pea) 'lu$ Densit%

-# auss  AC 'lu$ Densit%

-&0 Relati7e Permea8ilit% o( Unappe. Core

1.30 mm  Air ap /lB0"0# (or manu(a!turin2

3"& mm  A7aila8le :o88in @i.t;

4D 0"#& mm Primar% 6ire outsi.e .iameter 

INS 0"0 mm Primar% 6ire insulation t;i!)ness /Est2

DIA 0"#0 mm Primar% 6ire 8are !opper .iameter 

 

Internationa% Retifier orporation !001

 AL

Num8er o( Se!on.ar% Turns (or mainoutput

Minimum DC input (or a DC1DC po6ersuppl%

µ*

 AL

: AC

µr 

l

:@ A

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 A@ 24  A@ Primar% @ire A@ /nearest larer si+e2

CM 50& Cirmils Primar% @ire si+e in Cir!ular Mils

CMAp 30 Cirmils?A Primar% @ire Current Capa!it%

Transformer Seondaries

Ns 9 turns Num8er o( Turns on st output

Isp 0"00  A Pea) se!on.ar% !urrent st output

Isrms -"&  A RMS se!on.ar% !urrent st output

CMs #0& Cirmils Se!on.ar% @ire si+e in Cir!ular Mils

 A@s Err:30! Err:502  A@ Err#0

N8 10  turns Num8er o( :ias 6in.in turns

CM8 9 Cirmils :ias @ire si+e in Cir!ular Mils A@8 Err:502  A@ :ias A@ @ire si+e

Ns 0  turns Num8er o( Turns on n. output

Isp  A Pea) se!on.ar% !urrent n. output

Isrms  A RMS se!on.ar% !urrent n. output

CMs Cirmils Se!on.ar% @ire si+e in Cir!ular Mils

 A@s  A@ Se!on.ar% A@ @ire si+e

Ns3 0  turns Num8er o( Turns on 3r. output

Isp3  A Pea) se!on.ar% !urrent 3r. output

Isrms3  A RMS se!on.ar% !urrent 3r. output

CMs3 Cirmils Se!on.ar% 3 @ire si+e in Cir!ular Mils

 A@s3  A@ Se!on.ar% 3 A@ @ire si+e

Ns5 0  turns Num8er o( Turns on 5t; output

Isp5  A Pea) se!on.ar% !urrent 5t; output

Isrms5  A RMS se!on.ar% !urrent 5t; output

CMs5 Cirmils Se!on.ar% 5 @ire si+e in Cir!ular Mils

 A@s5  A@ Se!on.ar% 5 A@ @ire si+e

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Guidelines for Using the IRIStran al!ulation s"readsheet 

" Rea. t;e Appli!ation Note AN05a to un.erstan. 6;at is important in .esinin t;e trans(ormer 

" De!i.e on a Po6er Suppl% spe!i(i!ation an. input re,uire. 7alues in t;e Re. Column

3" Sele!t a (errite !ore usin t;e po6er le7el ui.elines in AN05a an. input t;e re,uire. !ore in(ormation

5" Sele!t a num8er o( turns (or t;e main output

#" Cal!ulate. spe!i(i!ations are s;o6n in t;e :lue Column

&" @at!; (or 6arnins in t;e !entral !olumn 6;i!; a.7ise i( !al!ulate. 7alue are outsi.e o( .esire. limits

" Comments are in!lu.e. (or all t;e input an. output 7aria8les to ui.e %ou t;rou; t;e .esin pro!ess

-" Cal!ulate. Values in :ol. t%pe(a!e are t;e improtant 7alues re,uire. (or t;e trans(ormer spe!i(i!ation