Discussion on Current Detection Circuit in Switching Power Supply

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Discussion on Current Detection Circuit in Switching Power Supply [Copy link]

Abstract: This paper introduces the implementation method of the current detection circuit, and discusses the problems of current transformer saturation and secondary current droop that are often encountered in current detection. Finally, the current detection method in the boost circuit is analyzed using experimental results.

Keywords: Current detection Current transformer Core reset

The circuit topology of the power switch circuit is divided into current mode control and voltage mode control. Current mode control has the advantages of fast dynamic response, simplified compensation circuit, large gain bandwidth, small output inductance, and easy current sharing, so it has been widely used. In the current mode control circuit, the current value needs to be measured accurately and efficiently, so the implementation of the current detection circuit becomes an important issue.

This article introduces the implementation method of the current detection circuit, and discusses the problems of current transformer saturation and secondary current droop that are often encountered in current detection. Finally, the current detection method in the boost circuit is analyzed using experimental results.

liqingwu1234

Thanks in advance!!!

qaz2008

I'll download it first, thank you

常见泽1

Look, I'm looking for the schematic diagram of the current detection circuit.

fengche1915

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