Heidi Barnes

Jan 21, 2025 | signalintegrityjournal.com | Heidi Barnes |Steve Sandler |Benjamin Dannan

Hardware engineers are learning the hard way that power integrity (PI) requires electromagnetic (EM) simulation of the printed circuit board (PCB) power delivery network (PDN). Traditional rules-of-thumb and leveraging data sheet examples are not an option as designs move from hundreds of Amps (A) to thousands. 1000 A across a 100 microhm (µΩ) PCB PDN is still 100 millivolts (mV) of IR drop and 100 Watts (W) of power dissipating as heat.

Aug 1, 2024 | signalintegrityjournal.com | Steve Sandler |Benjamin Dannan |Heidi Barnes |Idan Ben Ezra

Designing a power distribution network (PDN) for a scalable 2000 Amp power supply presents numerous challenges. This paper will address these challenges while demonstrating how to design, simulate, and validate a scalable core power rail with a current of 2000 Amp. The most common architectures for high-current power rails utilize a 48 VDC input to reduce the current to a more manageable level.

Nov 28, 2023 | signalintegrityjournal.com | Steve Sandler |Benjamin Dannan |Heidi Barnes |Christian Yots

In the world of power electronics, the focus is on the power supply, and the load is modeled as a simple resistor. In the world of power integrity, the focus is on the decoupling capacitors required for the digital load and the power supply is modeled as a simple resistor in series with an inductor.