AC/DC Side Split Capacitor Power Decoupling Circuit

A Case Study of Side-Channel Analysis Using Decoupling Capacitor Power Measurement with the OpenADC

When capturing power measurements for processing with side-channel analysis, there are many options with regards to both how the measurement is taken, and also how that measurement is digitized. This work concentrates on a new technique which measures the current through a decoupling capacitor, with a probe that can easily be built in any electronics lab. In addition an open-source digitizer bo...

Effective Decoupling Radius of Decoupling Capacitor*

Decoupling capacitors on packages and printed circuits boards are often essential to reduce voltage fluctuations and maintain power and signal integrity. This paper presents a measure for the evaluation of effectiveness of decoupling capacitors placed on package or board structures.

Quantifying Decoupling Capacitor Location

Decoupling capacitor location in DC power bus design is a critical design choice for which proven guidelines are not well established. The mutual inductance between two closely spaced vias can have a great impact on the coupling between an IC and a decoupling capacitor. This coupling is a function of the spacing between the IC and capacitor, and spacing between power and ground layers. The impa...

Printed Circuit Board Power Bus Decoupling Using Embedded Capacitance

The purpose of decoupling capacitors on printed circuit boards is to meet the instantaneous current demands of high-speed active devices while minimizing power bus noise. Embedded capacitance is an alternative to discrete decoupling capacitors and is achieved by taking advantage of the natural capacitance between the power and ground planes. This paper investigates the electrical properties of ...

Evaluation of Low-Inductance Capacitor Configurations for High Frequency Circuit Board Decoupling