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How to Select an Inductor for a Buck Converter

An SMPS is one of those quiet (yet electrically noisy) devices that makes your favorite electronics run smoothly. Among the numerous DC-DC converter topologies, a buck converter finds plenty of uses for stepping down the input voltage to a lower level while providing high efficiency power conversion. A common question around component selection for these power converters is how to select an inductor for a buck converter. The goal in working with an inductor and other components in a buck converter is to limit power loss to heat and while minimizing current ripple.

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US Department of Transportation Seeking Alternatives to GPS

GPS-capable devices range from your phone to your smartwatch; simply type in your destination and follow the directions. Simple, right? According to the Washington Post, we should all stop using GPS as it’s ruining the navigation centers of our brains. Despite the neurological effects on perception and judgment, the U.S. Department of Transportation (DOT) aims to find alternatives to GPS to provide redundancy.

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Bluetooth 5.1 SoC vs. Module: Which is Best for Your Design?

The list of features available in Bluetooth just got a little longer since the release of Bluetooth 5.1. If you want to incorporate a Bluetooth 5.1 SoC into your new product, you have two primary options for bringing this component into your board. The first is as an SoC that mounts to your board just like any other component. The other option is to bring a module into your new board—directly onto the surface layer. Here’s what you need to know about a Bluetooth 5.1 SoC or module in your next IoT product.

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USB Power Delivery for Your Next Project

Since its introduction in the late 90s, the USB standard has never ceased to grow in popularity. There has been a growing trend toward USB being a power delivery interface with data, rather than a data interface that can supply power, as the 1.0 specification originally intended. To supply the increasing thirst for power over USB, the USB 3.0 Spec with Type-C began implementing the Power Delivery standard, which you should consider using for your next electronics project.

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Circuit Board Design for In-Circuit Testing

There are many types of circuit board tests available in electronics manufacturing today, each having unique goals and characteristics. This article presents guidelines at the design level (schematic and layout) to enable the use of in-circuit testing (ICT) fixtures to verify proper component assembly. These simple test fixtures allow your board to be tested as its assembled, which helps identify and remove failed boards from your production run.

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Creating PCB Mounting Holes

Our PCB must somehow be assembled into the final drone assembly. This will be achieved by attaching our PCB to the motherboard connector and by special mounting racks, which requires precise positioning of the two mounting holes on the PCB.

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Planning for the Future with Cirris Systems and Altium

Technological advancements have been a hallmark of the past few decades, from the widespread adoption of internet technology to the smartphones and wireless devices we rely on every day to stay connected. Orlan Thatcher, Board Layout Specialist at Cirris Systems, could never have predicted the demand their services would generate. The company struggled with six different software platforms before switching to Altium Designer.

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Working with PCB Keepouts

When working in the PCB, there may be specific areas that you would want to prevent the presence of certain objects, such as vias, tracks or copper regions. All of this can be realized in Altium Designer by using the Keepouts feature.

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An Introduction to NFC

I used to work in a research lab that worked primarily with RFID (Radio Frequency IDentification) and NFC (Near Field Communication) technology, particularly for the agriculture industry and cattle identification. These were very specialized fields; however, the lab also worked on projects which involved retail and various other applications for NFC. It’s an amazing technology that you might be using every day without thinking about it - building access to your mobile phone payments, for instance. 

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Editing Your PCB Geometry with MCAD Tools

You need to define your PCB geometry in the context of your enclosure. If your board cannot physically be assembled into the final product, it doesn't matter how well laid out it is electrically. This webinar focuses on how the MCAD CoDesigner allows you to edit your PCB in the context of a higher-level assembly, allowing you to respect the relevant mechanical constraints.

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The PCB Fabrication Process — what Every Design Engineer Needs To Know, Part 2

In Part 1 of this article, I described the first steps that occur during the PCB fabrication process. They detailed the inner layer processing effort as well as the efforts that take place during the transition from inner layer processing to lamination. This part of the article will provide a detailed description of the lamination, drilling and plating processes.

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The PCB Fabrication Process—What Every Design Engineer Needs To Know, Part 1

There are still a number of designers - perhaps most of them - who have never toured a PCB fabrication facility. They are also unaware of the various steps that occur during the fabrication process. The purpose of this article is to describe those steps and what transpires in each of them. Part 1 of this article focuses on inner layer processing and the steps that are done prior the lamination process.

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Webinar "8 Reasons to Store Your Components in Altium 365"

Working with local libraries seems like a simple solution, but we often don’t take into account the added time spent maintaining libraries and sharing them between team members. This webinar showcases the advantages of component storage in Аltium 365 to resolve the issues of local libraries and component management.

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Bridging the Gap Between Designers and Customers

Every piece of electronic equipment starts with a great idea. Transforming great ideas into real, physical products takes a team of talented individuals and multiple companies coming together to make everything from the internal components to the external hardware. Paul Payen de la Garanderie, Founder and Owner of AW Audio, an engineering services company based in France, understands these challenges very well. With an extensive background in the Audio/Visual industry, Paul has had to work with multiple companies over the years, from small start-ups to celebrated AV firms.

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Additive PCB Manufacturing: The Vaccine for Electronics Supply Shocks?

At this time, at least a quarter of the world’s population is under quarantine, with workers unable to go to offices or factories, leading to fundamental disabling of the world economy. The electronics industry is suffering greatly as well, dealing with a supply shock from factories shutting down in Southeast Asia, to demand-side shocks from Western markets literally shutting down. Now it is the electrical engineers taking the lead with additive PCB manufacturing.

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Webinar "6 Steps to Master Project Storage"

Altium 365 provides a secure cloud platform to store all of your design files in a single place so you can share them with anyone and access them from anywhere. This webinar discusses the advantages of placing, storing, and working with projects in Altium 365.

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Altium Designer 20 Changed My Layout Design Routines

I just finalized my first PCB design using Altium Designer 20. At the same time, I tested some new AD20 features, and in this article, I’ll share my thoughts about new layout design features which made the biggest impression for me: sliding, and any-angle routing.

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Designing for Antenna Isolation in Your Wireless System

Anyone who has taken apart an old cell phone or designs IoT devices knows multiple communication capabilities are present in these designs, each requiring different antennas. The RF designer should already take precautions for interconnect isolation, but antenna isolation is just as important when modeling and designing wireless systems.

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PCB Trace and Pad Clearance: Low vs. High Voltage

High voltage/high current designs carry safety requirements which need to be met by designers. Similarly, high speed designs need to have suppressed crosstalk in order to ensure signal integrity. The key design aspects that relate to both areas are your PCB trace clearance and pad clearance values. These design choices are critical for balancing safety, noise suppression, and manufacturability.

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Teardrops on Differential Pairs?
Blog
Should You Place Teardrops on Differential Pairs?

One of the major factors impacting reliability of a PCBA is the use of teardrops on traces in the PCB. Like many aspects of reliability, the considerations also span into the signal integrity domain, particularly as more high-reliability products require greater data handling capabilities and run at higher speeds. In this article, I’ll break down the issues present in teardrop usage on differential pairs and how these may affect impedance.

Broken PCB
Blog
The High-Reliability PCBA Design and Test Challenge

High-reliability electronics must go through multiple rounds of testing and qualification to ensure they can withstand their intended operating environment. Designing to performance standards, whether the baseline IPC standards or more stringent industry standards, is the first step in ensuring a reliable circuit board. In this e-book, readers will gain a thorough look into PCB testing and analysis, starting from basic tests performed on bare boards and completed assemblies.

Where to place AC Caps on PCIe Lanes
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AC Coupling Capacitors in PCIe Routing

Coupling capacitors find plenty of uses in analog applications and on differential protocols, acting essentially as high pass filters that remove DC bias carried seen on a signal. In the case of PCIe, there are a few reasons to place AC coupling capacitors on differential pairs beyond the fact that AC coupling capacitors are listed in the standard. In this article, we’ll look briefly at where to place coupling capacitors on PCIe links, as well as the reasons these are placed on PCIe links.

Tuning dialog
Blog
Altium Designer 22.7 Update

We are happy to announce that the Altium Designer 22.7 update is now available. Altium Designer 22.7 continues to focus on improving the user experience, as well as performance and stability of the software, based on feedback from our users. Check out the key new features in the What's New section on the left side of this window!

The Positive Impact of Supply Chain Visibility on Design to Cost
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The Positive Impact of Supply Chain Visibility on Design to Cost

Design to cost is a lofty idea that is only perfectly executed when supply and demand for components are in perfect harmony. Unfortunately, the current landscape for component sourcing makes design to cost more of a balancing act rather than an exercise in price reduction. To help designers in their efforts to balance cost, capabilities, and procurement, we created this ebook to help users understand how modern supply chain tools can help in these complex design problems.

Evaluating Stubs on PCIe Lanes
Blog
A Brief Study of Stubs on a PCIe Connector

Stubs are an important topic in high-speed PCB design, and there is a longstanding guideline that stubs should always be removed from all vias on high-speed digital interconnects. While stubs are bad for high-speed lines, they do not always need to be removed. What is more important is to predict the loss profile and frequencies, and to floorplan appropriately to try and prevent such losses.

Surface Layer DFM and Cleanup
Blog
PCB Layout Cleanup Before Manufacturing

Once you finish your placement and routing in your PCB layout, it can be tempting to wrap up the layout and send everything in directly to manufacturing. The reality is that the board may still need some work before it is considered finished. The cleanup you perform at the final stage of PCB layout will help you catch any outstanding errors that can't be programmed into your DRC engine, and it gives you a chance to add any outstanding details to the surface layers.

Low Cost and Professionally Built LED Panel
Blog
Insulated Metal Substrates: Building an LED Panel

In this project we’ll be building a moderate sized LED panel on insulated metal substrate (IMS). This light panel has three different white balance High CRI LED types on it, warm, neutral and cool. By changing the brightness of the different white balances, the light from the panel can be adjusted to match other lighting, making it perfect for film use - but also creating perfect lighting for electronics work. As with all my projects, this LED panel is open source, you can find the Altium project files over on my GitHub released under the permissive MIT License.

DFM For Your Materials
Blog
DFM in PCB Material Selection

Every design should begin with selecting the materials that will appear in the PCB stackup, as well as arranging layers in the stackup to support layout and routing. This section of our PCB manufacturing andc DFM crash course focuses on selecting the right materials for your PCB design. Materials should be selected given the particular design requirements outlined in your specifications.

PCB Layout for an BGA
Blog
How to Start an FPGA PCB Layout For Your Embedded System

FPGAs come in quad or BGA packages that can be difficult to floorplan, especially with the high number of I/Os often implemented in these components. FPGAs offer a lot of advantages in terms of their reconfigurability, but they can require a lot of effort to layout and route without headaches. If you’ve never worked with an FPGA in your PCB layout, we have some guidelines that can help you get started.

2-port VNA on a 3-port Network
Blog
How to Get 3-port S-parameters From a 2-port VNA Measurement

S-parameters are fundamental quantities in signal integrity, and an ability to understand them from measurement or analysis is very important. If you have a 3-port network, like a power divider or circulator, it may appear that you must use a 3-port VNA to measure these S-parameters. It is always acceptable to measure between two ports, but you need to know what exactly it is you are measuring. In this article, we’ll look at the relationship between the true 3-port S-parameters with a 2-port measurement.

Fab and Assembly Crash Course
Blog
A Day in the Life of the PCB Manufacturing Process

Before implementing design for manufacturing, it is important to understand the underlying process behind producing a physical PCB. Regardless of the various technologies present in each facility, a large majority of industry-leading manufacturers follow a specific set of steps to turn your design from a drawing in a CAD application into a physical board. In this article, we'll cover the basics that designers need to know as part of our crash course series on PCB manufacturing.

What Are the Main Skew Sources in a PCB?
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Addressing Skew Sources in High Speed PCBs

If you compile a list of skew sources, you'll see that fiber weave-induced skew is only one entry on a long list of skew sources. We'll look at this list of possible skew sources below, and we'll see how they affect the operation of your PCB. From the list below, we'll see that some of these issues with skew are not simply solved by paying attention to the fiber weave construction in a PCB substrate.

Ground Below SMPS Inductors
Blog
Should Ground Be Placed Below Inductors in Switching Regulators?

We love answering questions from our readers and YouTube viewers, and one of the recent questions we received relates to EMI from switching elements in a switching regulator is "Should a cutout be placed below the inductor in a switching regulator circuit?". Despite the variations in inductors and their magnetic behavior, there are some general principles that can be used to judge the effects of placing ground near inductors in switching regulator circuits. We’ll look at some of these principles in this article

Alternative Pins
Blog
Altium Designer 22.6 Update

We are happy to announce that the Altium Designer 22.6 update is now available. Altium Designer 22.6 continues to focus on improving the user experience, as well as performance and stability of the software, based on feedback from our users. Check out the key new features in the What's New section on the left side of this window!

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NEW
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Altium Stories
Engineering collaboration across Disciplines with Altium 365 and Design+Industry

Watch how D+I Part of Capgemini leverages Altium 365 to connect engineering disciplines, enhancing collaboration between electronics, mechanical, and industrial design teams. Their refined design process showcases how diverse expertise drives innovation.

NEW
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How-To's
High-Speed PCB Design: Mastering EMI/EMC on 8+ Layer Boards

Watch our tutorial on designing high-speed PCBs with eight or more layers while minimizing EMI/EMC issues. This video is a must-watch for engineers and designers working with high-speed digital systems, including FPGAs, microprocessors, and high-speed communication interfaces. Learn how to ensure your designs meet EMC standards and achieve optimal signal integrity.

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How-To's
Standard Stackup + Controlled Impedance Deep Dive

Check out our brand-new video where Tech Consultant Zach Peterson explores controlled impedance and controlled stackup design in PCB manufacturing. He breaks down their advantages and limitations, shows how to specify impedance in Altium Designer, and answers a viewer question about using controlled impedance with a standard stackup.

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Kickstart Your Rigid-Flex Journey
Kickstart Your Rigid-Flex Journey: Part IV - MCAD Integration

The final episode of Kickstart Your Rigid-Flex Journey covers MCAD integration with Altium Designer. Hosted by Piet Callemeyn, this video walks through using MCAD CoDesigner, collaborating with mechanical engineers, and syncing design changes.

Full series available here: Kickstart Your Rigid-Flex Journey Series

Embedded thumbnail for Tackling Complexity: How Altium Designer 25 Handles Large PCB Designs - Recording Preview
New in Altium Designer 25
Tackling Complexity: How Altium Designer 25 Handles Large PCB Designs - Recording Preview

Discover how Altium Designer 25 enhances performance across schematic design, PCB layout, and documentation. Watch the webinar recording to see how it handles large and complex designs with ease!

Embedded thumbnail for TVS Diodes on RF PCB Traces: What You Need to Know!
How-To's
TVS Diodes on RF PCB Traces: What You Need to Know!

Check out our latest video to learn about bidirectional and unidirectional TVS diodes, tips for avoiding harmonic generation, and the key characteristics to ensure optimal ESD protection. Host Zach Peterson provides practical examples and design tips to keep your RF lines interference-free. Plus, he dives deep into RF circuit protection, featuring valuable resources from Octopart.

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How-To's
Ferrite Bead Circuit Model Parameters Deep Dive

Check out our new video where host Zach Peterson explains how to calculate resistance, inductance, and capacitance for ferrite bead models. From analyzing impedance curves to using SPICE simulations and a custom Excel calculator, discover practical techniques for accurately modeling ferrite bead behavior.

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How-To's
How to Design a PCIe Edge Card

Watch our new video where Zach Peterson walks you through designing a PCIe edge card. Learn about mechanical specifications, pinouts, creating templates in Altium Designer, and extending an 8-lane PCIe card to a 16-lane configuration—all with practical tips and a ready-made template!

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New in Altium Designer 25
Wire Bonding in Altium Designer: Features and Capabilities

During the Hardware Design Masterclass Conference in Wrocław, we showcased the Wire Bonding feature. Samer Aldhaher delivered a presentation, and now we're excited to premiere it on YouTube. This session explores the Wire Bonding feature and includes a live demo highlighting its basic capabilities.

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New in Altium Designer 25
Unlock New Design Possibilities with Wire Bonding - Recording Preview

Explore how Altium Designer simplifies advanced PCB designs like 3D stacked die in cavity. From routing bond wires to generating complete project documentation, this on-demand webinar has you covered. Full recording is here: Wire Bonding Webinar Recording.

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Altium Stories
Industrial Design Meets Electronics Engineering

Discover how engineering disciplines come together to create remarkable products with Altium’s powerful tools. Electronics, mechanical, and industrial design merge their expertise, as D+I, part of Capgemini, showcases their refined design process. See how diverse skillsets and Altium's solutions drive innovation.

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How-To's
Simplify Analysis with Power Analyzer by Keysight

The Power Analyzer by Keysight in Altium Designer simplifies power design by enabling detailed analysis of power nets and PDNs. This demo highlights how to identify and resolve issues like voltage drops to ensure reliable power delivery, all within the Altium environment.

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New in Altium Designer 25
Perfect your high-speed routing with Dynamic Phase Matching!

Struggling with phase matching in your high-speed projects? Learn how Altium Designer 25’s Dynamic Phase Matching feature ensures precise signal integrity and simplifies high-speed design.

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HDM Wrocław
Hardware Design Masterclass Wrocław 2024 - Autumn Edition

Altium participated in the Hardware Design Masterclass Wrocław 2024, organized by Rafał Stępień. Representing Altium, Samer Aldhaher delivered a presentation on Wire Bonding in Altium Designer. This slideshow highlights key moments from the event.

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How-To's
Pi Filter Formulas and Simulation Deep Dive

Learn the essentials of Pi filters, including how to size, design, and simulate them in Altium Designer. Host Zach Peterson explains the design equations for Pi filters, discusses online tools for accurate component selection, and demonstrates real-time simulations in Altium Designer to visualize the effects of impedance mismatches.

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New in Altium Designer 25
True Donut Pad Shapes

Check out our brand-new short video showcasing an exciting improvement in the PCB design process. Altium Designer 25 now supports true donut pad shapes, enhancing both your routing and performance.

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