How to design a reliable and safe non-isolated power supply(2)

The non-isolated Marine boost voltage 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 Marine boost voltage 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!

Four elements of high reliability non-isolated Marine boost voltage power supply planning:

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.

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

●The design is simple. Power is available with just one power module, with a few discrete components. ● Shorten the development cycle. The module power supply generally has a variety of input and output options. Users can also repeatedly stack or cross stack to form a building block combined power supply to achieve multiple input and output, which greatly reduces the prototype development time.
●Change is flexible. If the product design needs to be changed, simply convert or parallel another suitable power module.

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