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As electronic devices advance toward high-frequency, high-efficiency, and high-density designs, Electromagnetic Compatibility (EMC) has become a critical factor determining product performance and reliability. Particularly concerning Conducted Emissions (CE) and Radiated Emissions (RE), traditional rectifier components often become the bottleneck limiting the overall EMC performance of the entire system.
Addressing this common industry challenge, Shenzhen World Industrial Co., Ltd. (hereinafter referred to as "World"), leveraging nearly two decades of R&D expertise in discrete components, has innovatively introduced the "Soft Bridge® + Absorber Diode" synergistic optimization solution. This approach systematically resolves EMC design challenges at the fundamental component level.
What are the Root Causes of EMC Bottlenecks?
Schematic Diagram
Conducted Emissions (CE): These primarily originate from voltage oscillations and peak currents generated during the reverse recovery (turn-off) phase of rectifier diodes, resulting in differential-mode interference.
Radiated Emissions (RE): These are commonly associated with RCD snubber circuits, MOS switching circuits, and transformer loops. In particular, emissions tend to exceed standard limits within the 30 MHz to 60 MHz frequency band.
Radiated Emissions (RE): These are commonly associated with RCD snubber circuits, MOS switching circuits, and transformer loops. In particular, emissions tend to exceed standard limits within the 30 MHz to 60 MHz frequency band.
Soft Bridge®: The "Softener" for Low-Frequency Conducted Emissions
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World Industrial's Soft Bridge® significantly improves the reverse recovery characteristics of diodes, effectively suppressing voltage oscillations and harmonic noise during the switching process.
Key Advantages:
1.Enhances low-frequency conducted emission performance.2.Suppresses high-frequency interference.
3.Reduces the reliance on peripheral EMI components (e.g., X-capacitors and common-mode chokes).
Absorber Diode: The Optimal Choice for High-Frequency Radiation Control and Energy Efficiency
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The absorber diode effectively clamps the resonance caused by transformer leakage inductance and MOS junction capacitance. It feeds the absorbed energy back into the secondary circuit to achieve energy recycling, thereby boosting overall system efficiency.
Key Advantages:
1.Significantly suppresses radiated emissions in the 30 MHz to 60 MHz frequency band.2.Reduces no-load power loss by over 10mW, improving light-load efficiency by 2% to 3%.
3.Delivers superior high-temperature reliability, extending component lifespan.
The "Soft Bridge® + Absorber Diode" solution represents more than just a performance upgrade for individual components; it is a profound integration of system-level EMC design philosophy and component selection strategy. Through the synergistic operation of these two devices, Shenzhen World Industrial Co., Ltd. empowers our clients to achieve an optimal balance among conducted and radiated emission control, energy efficiency optimization, and cost management.
For more technical details and component selection support, please feel free to contact us!
