Design Ideas of Switching Power Supply 24V Products

The design idea of ​​the Switching power supply 24V product is to first rectify the 220V AC power to a high voltage DC voltage of about 300V through a rectifier bridge (it can be seen that the 300V high voltage part is not isolated from the 220V AC power), and then use pulse width modulation technology (PWM) or pulse frequency Modulation technology (PFM) converts high-voltage direct current into a constantly changing current signal, couples out low-voltage alternating current through a high-frequency transformer, and then rectifies and filters to obtain low-voltage direct current voltage. The Switching power supply 24V manufacturer tells you that the high-frequency transformer completely isolates the high-voltage part from the low-voltage part. If there is a feedback circuit, it is isolated by an optocoupler. The high-frequency transformer and optocoupler completely isolate the left high-voltage part from the right low-voltage part. Therefore, neither the 24V positive or negative pole and the 220V AC live or neutral line can form a loop.

Switching power supply 24V manufacturers tell you that the switching power supply works in high frequency and high pulse state, which belongs to a special kind of analog circuit. The layout of the board must follow the principle of high-frequency circuit wiring.
Layout: The Switching power supply 24V manufacturer tells you that the pulse voltage connection should be as short as possible, in which the input switching tube is connected to the transformer, and the output transformer is connected to the rectifier tube. The pulse current loop is as small as possible, as the input filter capacitor is positive to the transformer to the switch tube and the return capacitor is negative. The output part of the transformer output terminal to the rectifier tube to the output inductor to the output capacitor return to the transformer circuit X capacitor should be as close as possible to the input terminal of the switching power supply, the input line should be avoided parallel to other circuits, should be avoided.
The Switching power supply 24V product is a product that converts AC power into DC power required by electronic and electrical equipment. It has the characteristics of small size, light weight, low ripple, high efficiency, low operating noise, low operating temperature rise, and high cost performance. Short circuit and overload protection and soft start function effectively protect the load circuit from damage. It is an ideal substitute for traditional transformers.