AN604 datasheet(4/12 Pages) STMICROELECTRONICS

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AN604 Arkusz danych(PDF) 4 Page - STMicroelectronics

Numer części	AN604

Szczegółowy opis	Calculation of conduction losses in a power rectifier

PDF	12 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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4 / 12 page

Diode forward characteristics

AN604

4/12

Doc ID 3607 Rev 3

Figure 3.

VT0(Tj) and RD(Tj) parameters

VT0 and RD are given in each ST diode datasheet. In most cases they are calculated at

125 °C with maximum VF values for IF1 = IF(AV) and IF2 = 2· IF(AV), where IF(AV) is the

average forward current rating of the diode. For a quick calculation these values can be

used. For more accurate estimation, RD and VT0 must be calculated using the specific

application conditions. See the example in Chapter 3.

F (I F1 ,TjRef2 )

F (I F2 ,TjRef2 )

F (I F1 ,TjRef1 )

VF(IF2,TjRef1)

T0 (TjRef2 )

T0 (TjRef1 )

jRef2 > TjRef1

F (I F ,TjRef2 )

F (I F ,TjRef1 )

)

(

jref2

D T

)

( jref1

D T

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