Application Note AN-9041 PFC SPM® Design Guide with Analog PFC IC
■An inrush-current prevention circuit is required due to the large DC link capacitance as shown in Fig. 1. The relay of the circuit should be closed after DC link capacitor is charged far enough. PFC SPM®. mini-SPM and control 1C can share single GNO stage. Usually, this 6ND and the Nsenss terminal of PFC SPM should have the same potential. Large surge voltage is easily produced between P and N terminals by large current switching. To reduce surge voltage it is important to shorten the DC link bus wiring between PFC SPM and DC link capacitor. In addition, good high frequency characteristic capacitor, such as polypropylene film capacitor should be mounted near to P and N terminals as a snubber.
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PFC 、 DC link capacitor 、 SPM |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2021/8/6 |
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Rev. 1.0.1 |
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AN-9041 |
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1006 KB |
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