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UM1063 Fiches technique(PDF) 28 Page - STMicroelectronics

No de pièce UM1063
Description  The PM8803 is a highly integrated device embedding
PDF  32 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM1063 Fiches technique(HTML) 28 Page - STMicroelectronics

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DocID018573 Rev 2
7.3.5
Line transient
Figure 24 depicts the effect of a line transient on the PoE converter. A 12 V step on a 42 V
input PoE line (green trace) is shown. The hot-swap MOSFET (yellow trace) withstands the
transient while the input current (pink trace) is limited during the input capacitor charge; the
converter continues to work and the output voltage (blue trace) remains in regulation.
Figure 24. Effect of a 12 V line transient on the converter at 4 A load
Figure 25. Effect of a 12 V line transient on the converter at 0 A load



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