How the hybrid output capacitor network affects the loop transfer function?

(1) Poles and zeros in power stage have a direct effect on the loop transfer function. To understand how the hybrid output capacitor network affects the loop, calculate the poles and zeros in the power stage. The calculation can vary in the different control mode, as they have different control to output transfer function Gdv(s).

Why should you choose Talum capacitors?

Tantalum capacitors are the preferred choice for applications requiring the highest energy density, best reliability, low ESR, and excellent stability over wide ranges of time and application temperatures. Recently, the demand of high reliability capacitors withstanding harsher conditions and higher application voltages has increased.

What is the difference between a hybrid and a standalone polymer capacitor?

It is the parallel pole which leads to the significant difference between the hybrid configuration and the standalone polymer capacitor. From the analysis and bench verification, three conclusions can be drawn. The frequency of loading pole depends on the total effective capacitance of the output capacitor network.

Which electrolytic capacitor has the highest ESR?

Aluminum electrolytic capacitors provide a large amount of capacitance, but have the highest ESR among the four capacitor types. Tantalum and polymer capacitors have medium-range capacitance values, ESR, and rated voltage. By using a hybrid capacitor network, designers can take advantage of the benefits of each capacitor type.

How does a DC/DC converter use a hybrid output capacitor network?

In DC/DC converter small signal modeling, the capacitance and ESR values of the output capacitor have a direct effect on the poles and zeros in the open loop transfer function. With the presence of a hybrid output capacitor network, new poles and zeros are introduced into the loop by the network itself.

What is a hybrid capacitor network?

Tantalum and polymer capacitors have medium-range capacitance values, ESR, and rated voltage. By using a hybrid capacitor network, designers can take advantage of the benefits of each capacitor type. In applications where small ripple, overshoot, and undershoot are required, hybrid output capacitor networks are very common.