Datasheet > DPA425GN

DPA425GN

更新时间： 2024-01-26 23:56:29

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		/
页数	文件大小	规格书
20页	1071K
描述
DC-DC Forward Converter Design Guide Application Note AN-31

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DPA425GN 技术参数

AN-31

4. Thermal check – At maximum output power, minimum

input voltage and maximum ambient temperature, verify

that temperature speciﬁcations are not exceeded for the

transformer, output diodes, output inductors and output

capacitors. The DPA-Switch is fully protected against

overtemperature conditions by its thermal shutdown

feature. It is recommended that sufﬁcient heat sinking is

provided to keep the tab temperature at or below 115 °C

under worst case continuous load conditions (at low input

voltage, maximum ambient and full load). This provides

adequatemargintominimumthermalshutdowntemperature

(130 °C) to account for part-to-part R_DS(ON)variation. When

monitoring tab temperature, note that the junction-to-case

thermalresistanceshouldbeaccountedforwhenestimating

die temperature.

References

[1] Ferroxcube (formerly Philips) core supplier –

www.ferroxcube.com.

[2]TDKcoressupplier–www.component.tdk.com/components/

ferrite.asp.

[3] AVX (Thompson) core supplier - www.avxcorp.com.

[4]M.Domb,R.Redl,andN.O.Sokal. “Nondissipativeturn-off

snubber in a forward converter: analysis, design procedure, and

experimental veriﬁcation,” Ofﬁcial Proceedings of the Tenth

International PCI ʻ85 Conference, pp. 54-68.

[5] T. Ninomiya, T. Tanaka, and K. Harada, “Analysis and

optimization of a nondissipative LC turn-off snubber,” IEEE

Transactions on Power Electronics, Vol. 3, No. 2, April 1988,

pp. 147-156.

Design Tools

Up-to-dateinformationondesigntoolsisavailableatthePower

Integrations website: www.powerint.com.

18 7/04

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