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Markus Zehendner
Jul 20, 2017
How to approach a power-supply design – part 3
In the second installment of this blog series, I discussed how to choose the best-fitting topology from the parameters of your power-supply specification. In this third installment, I’ll describe different in-depth aspects for buck, boost and buck-boost topologies. Buck converters Figure 1 shows the schematic of a nonsynchronous buck converter...
Will Zhou
Jul 18, 2017
Transform the way you charge your devices with USB Type-C and PD
Nowadays, we see more and more electronics with USB Type-C™ and USB Power Delivery (PD) ports on the market. They range from cellphones, laptops and power banks to drones, power tools, and smart home and portable applications. The USB...
Colin Gillmor
Jul 6, 2017
Help! My power supply unit is unstable – part 1
I’ve heard that there are at least seven reasons to eat, and only one of those reasons is hunger. In the same way, there are many reasons for switched-mode power supply (SMPS) instability, and only one of those reasons is a control loop with an insufficient gain or phase margin. In this six-part series, I will offer some tips about identifying...
Timothy Hegarty
Jun 29, 2017
Synchronous buck controller solutions support wide VIN performance and flexibility
At the epicenter of most power converter implementations is the inevitable trade-off of efficiency and power density . However, new applications are coming to fruition that have unique power solution requirements. Many designers are choosing to capita...
Harmeet Singh
Jun 28, 2017
Making smart meter eFuses robust and reliable
Replacing existing meters (which still use technology developed decades ago), smart meters use a secure connection network to automatically and wirelessly send energy usage to utility companies. The heart of a smart meter is its switch-mode power supply (SMPS) using the low-cost flyback topology for both single- and three-phase smart meters. The...
Alan Lee
Jun 26, 2017
Charge electronic locks for shared bikes with the sun
In large cities, the concept of “shared bikes” started several years ago. Anyone can rent a bike and return it to various docking stations throughout the city with a credit card. The rider is charged for the length of time that they’ve rented the bike. For example, in London, a shared bike user picks up and returns the bike to a...
Alexander Gronbach
Jun 21, 2017
How adding an eFuse will protect your brand’s reputation
This past weekend, one of my friends asked for my opinion on which brand of TV to buy. One of the first things that came to mind was my “gut feel” on which brand had the best reputation. We discussed that point for a while without really ...
Aaron Paxton
Jun 14, 2017
LDO basics: noise – part 1
In another LDO basics blog post , I discussed using a low-dropout regulator (LDO) to filter ripple voltage arising from switched-mode power supplies. This isn’t the only consideration for achieving a clean DC power supply, however. Because LDOs are electronic devices, they generate a certain amount of noise of their own accord. Selecting a low...
George10687
Jun 8, 2017
Powering the Intel® Arria 10 GX FPGA with a PMBus Multiphase Buck DC/DC Converter
Field-programmable gate arrays (FPGAs) are increasingly complex system-on-chips (SoCs) that include not just programmable logic gates and random access memory (RAM) but also analog-to-digital converters (ADCs); digital-to-analog converters (DACs); and programmable analog features and signal-conditioning circuits that enable high-performance digital...
Yingyang Ou
Jun 6, 2017
Power Tips: How to upgrade a legacy power bank to USB Type-C™
With more and more portal devices adopting the USB Type-C™ connector , designing a power bank capable of charging these devices is suddenly a big deal. Unfortunately, the USB Type-C connector is a totally new type of USB connector. Understanding the differences between a USB Type-C power bank from legacy USB power banks is critical for successful...
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