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Showing 1 to 7 of 7 for “"Shielding technique"”.
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Transformer Shielding Technique for Common Mode Noise Reduction in Switch Mode Power Supplies
… CM noise reduction for DC/DC converters. The shielding concept and balance concept are combined to propose a novel balance double shielding technique. This method can have an effective CM noise reduction in the circuit level. In addition it is easy to design and implement in the real …
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EMI Noise Reduction Techniques for High Frequency Power Converters
… to reduce CM noise: symmetry, balance and shielding. The idea of symmetry concept is generating another dv/dt source to cancel the original dv/dt source. However, this method is very difficult to achieve and usually has more loss. The balance technique forms a Wheatstone bridge circuit to …
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Optimization of LLC Resonant Converters: State-trajectory Control and PCB based Magnetics
… and its design methodology. On the other hand, shielding technique can be employed to suppress the CM noise for PCB winding transformer. This dissertation proposes a novel shielding technique, which not only suppresses CM noise, but also improves the efficiency. The proposed transformer design …
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Study on Zero Crossing Detection in CRM Totem-pole PFC Converter
… of the delay mechanism, ZCD delay compensation techniques are discussed and compared. Second, the coupling mechanism of dv/dt switching noise as common-mode noise in the ZCD circuit is analyzed. Upon understanding this coupling mechanism, a shielding technique is discussed and demonstrated to …
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Frequency selective surface (FSS) for cellular signals shelding
… bands. The employment of the FSS is an effective shielding technique as it eliminates the need for power supply and prevents the use of mobile phone without disrupting other types of communications. All the designs and simulations are done using the Computer Simulation Technology (CST) Microwave …
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Design Optimizations of LLC Resonant Converters with Planar Matrix Transformers
… for optimal efficiency. Next, the existing shielding technique for matrix transformers, which helps reduce common-mode (CM) noise without compromising on efficiency, is investigated for asymmetry and current-sharing issues, and modifications have been proposed to improve its efficiency. …
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PCB-Based Heterogeneous Integration of PFC/Inverter
… of the WBG devices. Symmetry and cancellation techniques are often employed to suppress CM noises in switching power converters. Meanwhile, shielding technique has been demonstrated to effectively suppress CM noises in an isolated converter with PCB-based transformer design. However, for …