ABB XVC767AE102 3BHB007209R0102 module

Description

ABB XVC767AE102 3BHB007209R0102 module

ABB XVC767AE102 3BHB007209R0102 module

Reduce internal interference in the design of communication switching power supply itself: suppress the noise of high-frequency switching transformers, absorb buffering, and reduce leakage inductance; Reasonable wiring of PCBs during circuit design should be avoided as much as possible by avoiding loop wiring; Put the ones with heavy interference together, and keep the ones with low frequency and low voltage interference away; Minimize the area contained in the circuit as much as possible; The positive and negative wires should be as close as possible; Enhance the design of input/output filtering circuits, improve the performance of APFC circuits, eliminate or reduce rapid changes in diode current. The commonly used circuits are zero voltage switch ZVS, zero current switch ZCS, and quasi resonant ZVS/ZCS circuits. This technology greatly reduces the electromagnetic interference generated by switching devices. By utilizing the advantages of lossless absorption technology combined with resonant zero voltage technology and zero current technology in combination with soft switching technology, resonance losses caused by parallel or series resonant networks in circuits can be solved. Shaping the waveform of power switch tubes; Isolation between analog and digital, high-voltage and low-voltage, etc.
(2) Eliminate electromagnetic interference and improve the working performance of switching power supplies
The elimination of conducted and radiated interference in communication switching power supplies is mainly due to the serious interference caused by signal propagation through the power grid on other electronic devices, often leading to more serious problems. Common suppression methods include buffer method, reduced coupling path method, and reduced parasitic component method. The limit values of conducted interference can refer to the electromagnetic compatibility specifications GB9254-1988, (386833.9-87, GB6833.4-1987, GB6833-1987) in the national standard.

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