Polymer Aluminum Electrolytic CapacitorsNetwork camera (IP camera) usage examples

The switch is underway from analog cameras whose main purpose is shooting, such as security cameras, to network cameras (IP cameras) that can connect to the Internet and analyze the data that has been shot.

For example, in complex facilities, network cameras are not just used for security measures but also to predict and visualize the congestion situation in stores and to analyze that data to improve sales and customer satisfaction.
Network cameras can send high-quality video data and can also be integrated with AI. Therefore, ways are being explored to expand them from the conventional business format of equipment sales to the solutions business. Consequently, there are expectations for even higher quality images and further advances in image analysis technologies utilizing AI.

In this way, it is also necessary to evolve signal processing circuits to process a vast number of images and to advance analysis using AI technologies.
Thus, stricter power supply noise suppression and designs with stabilized voltage fluctuations have become important as the size of the current in power supply circuits becomes larger.

Murata's polymer capacitors are all-solid multilayer polymer aluminum capacitors (ECAS series). Their features include low ripple noise and voltage fluctuation stability. The ECAS series makes it possible to obtain stable capacity regardless of the DC bias and temperature characteristics. These capacitors also have no acoustic noise. Therefore, they are suitable as stabilizing capacitors in power supply control circuits.

The ECAS series can be used in circuits such as shown in the figure below.

The ECAS series with its low ESR characteristics has excellent ripple noise suppression performance.

The ECAS series with its large capacitance characteristics features excellent stability with respect to load-side fluctuations in large-current applications.

The ECAS series has lower ESR compared to tantalum capacitors, which enables the realization of lower ripple noise.

The ECAS has more stable reliability compared to tantalum capacitors, which contributes to stable set operation.

The ECAS series has larger capacitance and no voltage dependence compared to MLCC, so the number of components can be reduced to achieve a smaller set in applications currently using large numbers of MLCC.

The effective capacitance of MLCC varies with changes in DC voltage and temperature.
By contrast, the ECAS series has almost no capacitance change with respect to DC voltage or temperature, enabling use for stable power supply design.

We have also prepared a PDF document of network camera (IP camera) usage examples.
Download the documents below to view the materials.