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Is the leakage inductance of the switching power supply transformer included in the total inductance? How to measure the leakage inductance and inductance value of a transformer? Regarding the leakage inductance of switching power supply transformer, we need to first clarify some basic concepts. W
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Overvoltage protection. The power supply provides stable power to external devices. Each device will have a maximum allowable voltage during normal operation. When the voltage provided is too high, the device will be damaged within a certain period of time, so power supply overvoltage protection is
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1. EMC characteristics of FLYBACK The voltage oscillation peaks and current oscillation peaks formed by the switching power tube of FLYBACK (flyback converter) at the turn-on and turn-off moments are the main sources of interference in switching power supplies. , plays a decisive role
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Suppression Measures for Differential Mode Conducted Emission of Switching Power SupplyThe solution to the differential mode conducted emission of switching power supply from the source is to reduce the spectrum envelope of the switching current, thereby reducing noise. each frequency component of t
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As can be seen from the above figure, the switching power supply is in the process of turning on and off the MOS tube. , the voltage of the primary side of the transformer and the part of the wire connecting the primary side of the transformer to the drain of the MOS tube is changing rapidly. This l
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With the development and innovation of power electronics technology, AC/DC switching power supplies have basically replaced linear power supplies and are developing in the direction of small, lightweight and efficient. At present, switching power supply is an indispensable and key part of the rapid
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Switching power supply chip U62133 rekindles the "core" hope 01 Huawei's latest flagship Mate 60 Pro launched in a low-key manner The sale shocked the world. This flagship phone is the world's first mass-market smartphone to support satellite calls. It can make and receive satellite calls even if t
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Strong species of prairie side 6W switching power supply chip U6215 With the 618 promotion activities in full swing, chip merchants are also eager to move. Since you want to choose a switching power supply chip, what brand and model is your truly safe and convenient one-step choice?
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1. Definition of switching power supply After the input AC voltage (AC) is rectified and filtered, a high-voltage DC voltage (DC=1.4AC) can be obtained. This voltage is connected to the switching element and used as a switch in 20KHZ~100KHZ high frequency state. At this time, the DC h
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The flyback switching power supply is mostly used in the low and medium power range, such as 2w~100w. Basic principle of flyback power supply When the power supply is in a steady state, at the time ton, the MOS transistor Q1 is turned on, and the inductor current of the prima
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The difference between the continuous mode CCM and the discontinuous mode DCM of the flyback switching power supply is mainly reflected in the transformer design. This article expands to explain which technical parameters of the flyback power supply will be affected by DCM. If you wan
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Combined with the schematic diagram, I try to explain the switching waveforms of the voltage and current at each key point of the flyback switching power supply in the steady state of the discontinuous mode DCM, without involving the specific component parameter values.Basic working principle of fly
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