This month’s set of new articles and app notes covers PDN, SPICE Modeling, and Assessing Voltage Regulator Performance

How do I pick the best voltage regulator for my circuit?
There are so many different voltage regulators on the market these days. How do I pick one that will be good for my circuit? This article covers the key characteristics you need to compare.

PCB characteristics affect PDN performance
The basic design rules for PDN teach us that the best performance is obtained from a uniform, flat impedance profile. This is one reason that power supply stability is important, since a power supply with poor stability results in impedance peaks, which degrade the flat impedance profile and the performance of the circuit being powered.

Definitive Handbook of Transistor Modeling
Techniques and examples for modeling BJTs and diodes. With a “How to Tweak” guide that includes SPICE parameter definitions and their impact on data sheet curves.

PDN Basics
Paralleling Tantalum and Ceramic Capacitors Can Be Risky Paralleling capacitors to achieve high frequency sideband decoupling must take into account the performance characteristics of individual capacitors.

Measure PDN on a budget
As the use of microcontrollers, CPUs and FPGAs continues to grow, more engineers are facing challenges with their PDN design and measurement. Typically, PDN measurements are performed using a network analyzer. A 1-port measurement can be used for impedance levels above a few hundred mΩ. A 2-port shunt-thru measurement is used for applications as low as 1mΩ. This article discusses both of these S-parameter measurements.

Assessing Point-Of-Load Regulators Using Non-Invasive Techniques
Evaluating the stability of a Point-Of-Load (“POL”) regulator can be performed using both traditional Bode plot and output impedance measurement techniques.

AEi Systems and its partners perform a variety of testing and characterization services. Please see below for some very unique capabilities; many of which are not readily available elsewhere.

If you need any of these capabilities, resources or equipment please give us a call at 702-625-0568,

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