Power Integrity

ADI

Highly Integrated AFE for Power Quality Monitoring Saves Significant Design Time and Cost

Analog Devices, Inc. (ADI) today introduced a highly integrated polyphase analog front end (AFE) with power quality analysis designed to help extend the health and life of industrial equipment while saving developers significant time and cost over custom solutions. Achieving extremely accurate, high-performance power quality monitoring typically requires customized development, which can be expensive and time-consuming.


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Featured

What Are Good Connections to Evaluation Boards?

In many measurements, connections to the Device Under Test (DUT) is very important and can fundamentally determine whether the data we get is correct or not, whether the result is useful or potentially misleading.  This article highlights some of the main items to consider.  To illustrate the points, we use examples with DC-DC converter evaluation boards.


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Icepak

SIwave to Icepak Coupling

ANSYS

In today’s ever-changing PCB requirements arena, DC drop caused by IR losses are becoming a bigger concern for design engineers. Along with the IC currents demands increasing the currents carried on the PCB are rising as the voltages, and voltage margins, decrease. As the currents increase so do the heating effects of IR drop and their consequences to the PCB design. SIwave introduces a new solver type for design engineers to investigate preliminary thermal performance on designs.


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ANSYS CPM

CPM model for Transient Analysis

ANSYS

Power Delivery Network(PDN) time domain noise analysis is an essential part for SI/PI/EMI analysis, SIwave can utilize CPM’s current PWL file as a current sink for transient analysis combed with C4 bump’s RLC parasitics to give more realistic and accurate noise value.


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8 Ways to Overcome SI and PI Challenges

8 Ways to Overcome SI and PI Challenges

Keysight

Keysight ADS 2016 features a host of new, technologies designed to improve productivity, including two electromagnetic (EM) software solutions specifically created to help signal and power integrity engineers improve high-speed link performance in PCB designs. What follows is a listing of 8 ways in which ADS 2016 can help you, the engineer, overcome your signal and power integrity challenges.


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Fig 1

Two Common Power Delivery Network Measurement Issues

There are many questions about measuring Power Delivery Networks (PDN), but these two are very common ones.  Why do we calibrate the 2-port measurement with a 1Ω shunt resistor and why do I use DC blockers on both ports?  In this article I’ll provide responses to both of these questions.  The measurement setup in Figure 1 is an example where I used both the 1Ω calibration and the inclusion of the DC blockers.


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VRM

Evaluation of Gallium Nitride HEMTs for VRM Designs

As systems designers work hard to squeeze more and more features into less board space, the power delivery paths are becoming increasingly complex. The current mature VRM designs based on Silicon MOSFETs are hardly meeting present day requirements. One of the promising technologies touted to solve this conundrum of space and performance constraints is GaN HEMT. However, many engineers are hesitant to design very high frequency GaN VRMs from the ground up. This paper evaluates the steps required to modify existing Si-MOSFET designs for use with eGaN HEMT devices. The paper also compares the expected performance of GaN vs. Si in linear and switching regulator topologies and covers some of the measurement challenges as well.


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