Pingshang Technology takes you to interpret the common doubts in the application of high-voltage smd capacitor

Pingshang Technology takes you to interpret the common doubts in the application of high-voltage smd capacitor

As a relatively common electronic component, high-voltage smd capacitor appear in communications, photovoltaic substation, and high-power power supply design and development. In the application process, we often face some design, installation or model selection problems. Today, the editor of Pingshang Technology explains the common problems, as follows:

Is the capacitance of the high-voltage patch capacitor larger the better?

In the actual design process, new engineers who are new to electronic design will choose large-capacity high-voltage capacitor when selecting high-voltage capacitor. However, although the larger the high-voltage capacitor, the stronger the current compensation capability provided by the IC, but the parasitic inductance will also increase, and some large-capacity high-voltage capacitor are larger in size, which will increase the cost, and have problems with air flow and heat dissipation. positive effect.

The larger the capacitance of the high-voltage capacitor, the lower the resonance frequency, and the smaller the frequency range in which the high-voltage capacitor can effectively compensate for the current. From the perspective of ensuring the ability of high-voltage capacitor to provide high-frequency currents, the view that the larger the high-voltage capacitor are, the better is wrong. There is a reference value in general circuit design.