Technical solutions, industry trends and insights for designing and managing power supplies.
    • Jan 17, 2018

    How to Select a MOSFET – Part 1

    In complicated power designs, metal-oxide semiconductor field-effect transistor (MOSFET) selection has a tendency to be somewhat of an afterthought. After all, it’s just a three-pin device. How complicated can it be, right? But as anyone who enjoys raw oysters will (try to) tell you, appearances can be deceiving; trying to select the correct MOSFET...
    • Jan 16, 2018

    Design a 3A power supply smaller than a 1608-size resistor

    Is it easy for you to physically see all of your integrated circuits (ICs) on your printed circuit boards (PCBs), or do you need a magnifying glass to see the small bits of black plastic sprinkled in among the larger resistors, capacitors and inducto...
    • Jan 10, 2018

    Power solution selection for a Xilinx Ultrascale/Ultrascale + FPGA made easy

    Given their high performance and integration capabilities, several data center and industrial applications use Xilinx® Ultrascale™ and Ultrascale+ field-programmable gate arrays (FPGAs), including enterprise switches, server FPGA accel...
    • Dec 29, 2017

    When and how to supply an external bias for buck controllers – part 3

    In part 1 of this series, I discussed the need for an external bias and under what conditions you need to consider one. In part 2 , I discussed whether you can apply an external bias to any controller. In this third and final installment, I will go over a circuit that you can use to generate an external bias for any controller. This may prove useful...
    • Dec 28, 2017

    Power Tips: How to protect a USB Type-C™ controller from legacy adapters

    In the last couple of years, more and more portal devices such as notebooks and smartphones have employed USB Type-C™ as the interface port. The USB Type-C connector is a totally new USB connector. It has a set of great profile, power rating and data transmission speed improvements. But the most important change about this charging protocol is...
    • Dec 27, 2017

    Power a RS-485 transceiver with a high efficiency flyback converter

    RS-485 is a standard defining the electrical characteristics of drivers and receivers for use in serial communication systems. It defines not only a single device-to-device interface, but also a communications bus that can form simple networks of multiple devices. RS-485 runs on twisted-pair cable, and the voltage differential of the two lines defines...
    • Dec 22, 2017

    When and how to supply an external bias for buck controllers – part 2

    In part 1 of this series, I discussed the need for external bias and under what conditions you need to consider it. In this installment, I will look at whether you can apply external bias to any controller. As a rule of thumb, you cannot apply external bias to controllers that have a current limit for the control field-effect transistor (FET) (also...
    • Dec 21, 2017

    When and how to supply an external bias for buck controllers – part 1

    In multi-rail systems system designers often have to make the choice of where to tap into for the input rail for the buck controllers. Often it is from 12V or 24V rails, however in some cases it’s from 5V or 3.3V rails. I will be discussing the need to supplying external bias and its benefits in the first part of this 3 part series. Well, it...
    • Dec 7, 2017

    Converters or controllers – taking a look at the bigger picture

    I’m the type of person who can’t imagine reading books on an e-reader. New technologies just can’t replace the feeling of flipping pages and physically putting in a bookmark. Even though I know that e-readers can hold thousands of b...
    • Dec 6, 2017

    The top trends in high-voltage power, from isolation to wide-bandgap technologies

    What do you, me and your second cousin twice removed have in common? Together, we are directly and indirectly influencing technology. More specifically, together we are creating a need for high voltage. Two trends drive the need for high voltage: electrification and (an insane amount of) energy consumption. Various applications including automotive...