How to design a reliable and safe vehicle module power supply(2)

The vehicle module LED advertising screen power supply is a power converter that can be directly installed on the printed circuit board. According to the conversion method, it is generally divided into AC to DC or DC to DC. With the development of technology, the power capacity tends to be modularized and miniaturized, so power modules appear. It has a high degree of integration, and integrates the main circuit of the switching LED advertising screen power supply into the chip, which can complete broadband modulation, isolation and various maintenance functions. As more and more people have higher requirements for power modules and higher reliability requirements, today's small editor commented on how to plan high reliability power modules!

A modular power supply is a power supply that can be directly mounted on a printed circuit board and can be used for application-specific integrated circuits (ASICs), digital signal processors (DSPs), microprocessors, memories, field programmable gate arrays (FPGAs) and other Digital or analog loads provide power. Typically, such modules are referred to as load (POL) power supply systems or point-of-use power supply systems (PUPS). Due to the obvious advantages of the modular structure, modular power supplies are widely used in switching equipment, access equipment, mobile communications, microwave communications, optical transmission, routers and other communications fields, as well as automotive electronics, aerospace, etc.

●High quality and reliable. Module power supply generally adopts fully automatic production, and is equipped with high-tech production technology, so the quality is stable and reliable.
Wide range of uses: The modular power supply can be widely used in various fields of social production and life such as aerospace, locomotives and ships, military weapons, power generation and distribution, post and telecommunications, metallurgy and mining, automatic control, household appliances, instrumentation and scientific research experiments. In particular, it plays an irreplaceable and important role in the field of high reliability and high technology.

Four elements of high reliability vehicle module LED advertising screen power supply planning:

1. Anti surge maintenance circuit planning

How to plan the anti surge maintenance circuit? For different uses, you may be able to adjust the position of the inductor TVS tube. This will enable the system to better use and correctly use the circuit, so as to better improve the EMC function. Pay attention to the planning of the two-level surge protection maintenance circuit. If it is used improperly, it will be counterproductive.

2. Reduce the planned amount

Correctly control the components to the specified value, reduce the number of components to delay degradation, improve component reliability and improve power reliability.