Interview Topics

For the comprehensive topics, see the PDF at the end of the page.

Example Questions

Things to look for:  A good PDN ensures the power supply bus is free of spikes, ripples, and noise for high transient loads such as digital processors.

Things to look for:  When two ceramic capacitors are connected in parallel, the equivalent series resistance (ESR) and equivalent series inductance (ESL) are reduced, while the capacitance is increased. This results in a wider V-shaped impedance curve, with the lowest impedance being lower. In other words, the V curve shifts down.  See below for a  depiction: