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AN4406 Fiches technique(PDF) 23 Page - STMicroelectronics

No de pièce AN4406
Description  new ST super-junction technology ideal for resonant topologies
PDF  27 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4406 Fiches technique(HTML) 23 Page - STMicroelectronics

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DocID025567 Rev 1
23/27
AN4406
Testing and comparing
27
4.3.3
Results
From the electrical results, the performance of the devices under test are conditioned by the
current level. In the resonant topology, at low load, the impact of the output capacitances of
the MOSFET's determine the energy losses dissipated inside the devices. Their variation
with voltage VDS and their symmetry play a fundamental role on the final performance.
Figure 21. Efficiency data vs load level in 400 W
evaluation board
Figure 22.
η (%) efficiency at V
IN = 230 VAC for
specific load %
Figure 23. Average % efficiency at VIN = 230 VAC



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