Is the power supply device such as a charger or a battery that we usually use as a power source? Let us first look at the definition of a power supply: a power supply is a device that converts other forms of energy into electrical energy. That is: the power source is a device that supplies electrical energy. Because it can convert other forms of energy into electrical energy, we call this device that supplies electrical energy a power source.
From the definition, we can see that the "power supply" we usually understand does not belong to the power supply. For example, the mobile phone charger we often use, it converts 220V AC mains into 5V DC, which can be said to only change the electric energy. In the form, we can call it a power conversion device.
How is the power conversion device defined? A device that can control and convert the form of electric energy. Therefore, our commonly known power supply is actually a power converter. The power converter can be divided into four types according to the conversion form: AC-AC (cycle converter), AC-DC (rectifier), DC-DC (converter), DC-AC (inverter); Divided into: linear power supply and switching power supply; according to the classification of control effects, it is divided into: voltage regulation, constant current, frequency modulation, phase modulation.
As a power conversion device for the electronics industry, the power module is widely used in various industrial automation industries. The power module is based on switching power supply technology and is made of high quality raw materials combined with a special modular production process. It has the advantages of modular design, moisture resistance, vibration resistance, good consistency, simple application and high reliability. With the rapid development of science and technology, the requirements for power supply reliability, capacity and volume are getting higher and higher, and the module power supply is increasingly showing its superiority. With its high operating frequency, small size, high reliability, easy installation and expansion. The advantages and applications are also more and more extensive.
For example, a ZY0FBXXD-3W ultra-thin AC-DC power supply module supports AC or DC voltage input. The input range is 85~265VAC (120~370VDC), which can ensure the output voltage is stable under large fluctuations. The voltage and current values ​​ensure the stability of the power supply circuit. At the same time, the power module mostly adopts high withstand voltage isolation technology, and the isolation withstand voltage is up to 2000VAC, which fully ensures the safe and stable operation of the circuit when the voltage is temporarily raised or temporarily dropped.
Looking back, let us look at the role of the power supply. From the overall role of the power module, we can classify the power module as a power source in a broad sense. Why do you say that? Because they are ultimately used for power supply. We can also divide the power supply into two categories, one for the self-generated power supply and the other for the power converter. For industrial design applications, the role of the power supply is irreplaceable. The stability of the power supply greatly determines the stability of the product as a whole. The volumetric weight specification of the power supply also determines the design of the PCB. This is why A good power module is the cause of the power supply.
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