Polymer Aluminum Electrolytic CapacitorsPanel usage examples

With the normalization of working from home and remote work since the COVID pandemic, markets for display panels used in devices such as computer monitors are expected to remain in steady demand.
For high-spec displays for applications such as gaming, higher definition images and high-speed image display features are in demand.
However, in order to achieve higher resolutions and refresh rates, signal processing circuit technology needs to be developed even further. With power supply circuits that support larger currents being the market trend in recent years, the pursuit of even greater power supply noise reductions, improvements to voltage stabilization designs, and reliability has proven to be the task at hand.

Murata's conductive polymer capacitors (ECAS series) have low-ESR, low-impedance, and high-capacitance features. Additionally, they are superior for their ripple absorption, smoothing, and transient response performances since there is no DC bias characteristic for capacitance and the temperature characteristic is stable. This contributes to reducing the number of parts as well as the size of the circuit board area.

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

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

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.

Because the ECAS series has no mechanical vibrations due to the piezoelectric effect, the acoustic noise is extremely low compared to MLCCs, and the problem of harsh noise can be solved.

We have also prepared a PDF document of panel usage examples.
Download the documents below to view the materials.