Testing and Analysis Techniques for the Application of Switching Power Supply System LLC
MC has become an important component of reliability in electronic products/equipment; Will be increasingly valued! Especially for our industrial and consumer products, they are required to meet their corresponding certification and export requirements, and corresponding national policies are also constantly being improved; At the same time, the deepening development of international trade; EMC technology has become a mandatory indicator for electronic products/devices! With the widespread use of high-frequency switching power supplies in the power supply systems of electronic products/equipment, they are becoming increasingly high-end; Therefore, the requirements for the power environment are becoming increasingly high; EMC will become increasingly important!
The EMI issues we often encounter with electronic products/devices; My lectures and my official account all have plans and summaries for analyzing EMI transmission design! Electronic designers who have read my articles and listened to my classes; Give me feedback on the results; At present, we have encountered EMI problems. According to your EMI filter design rules, we have indeed solved our EMI conduction problem; Benefit a lot of people!
Electronic products/equipment EMI radiation issues; Most designers cannot get started! For example, our electronic products/devices often experience EMI radiation issues ranging from 30MHZ to 50MHZ, especially around 30MHZ; Sometimes it's both! I also conducted theoretical analysis; My "Switching Power Supply: Analysis and Design of EMC"
According to the circuit principle, series or parallel connection of inductors and capacitors can form a resonant circuit, so that when the power supply is a DC power supply, the current in the circuit changes according to a sinusoidal law. Due to the sinusoidal variation of current or voltage, there is a zero crossing point. If the switching device is turned on or off at this time, the resulting loss is zero.
