Technical solutions, industry trends and insights for designing and managing power supplies.
    • Aug 27, 2015

    Overview of voltage regulator packaging

    As more and more features are packed into industrial and automotive electronic systems, smaller, robust packages become even more attractive. However, to ensure that the electronic design is thermally robust, you need to have a proper understan...
    • Aug 26, 2015

    Get into electromagnetic compliance with GaN

    Gallium nitride (GaN) transistors switch fast! In a previous post , I examined the LMG5200 half-bridge GaN driver, and showed that it is capable of a switching rise time of 600ps or less. On the bench, I measured a switch-node dv/dt of 40V per nanosec...
    • Aug 25, 2015

    Driving LEDs in battery-powered portable projectors

    Have you ever tried to present ideas on a projector and found that the customers’ meeting room has no equipment with which to do this? Wouldn’t it be handy if you had a portable one ready at hand? This happened to me recently, and wit...
    • Aug 24, 2015

    Fast forward your FPGA power design with TI Designs

    Wouldn’t it be much easier if processors and field programmable gate arrays FPGAs all operated from the same voltage and didn’t require special features like sequencing and control? Unfortunately, most processors and FPGA require different supply voltages, startup/shutdown sequences and different types of control. Luckily, power-management...
    • Aug 22, 2015

    Identify the most accurate linear voltage regulator

    Would you like your microprocessor to have peak performance all the time? Imagine that the power for your microprocessor consists of a switch mode power supply and a linear regulator, which allows for minimum power consumption. The block diagram for...
    • Aug 21, 2015

    How to generate current sources and sinks of arbitrary magnitude

    Current sources and sinks are essential components of analog design, from the simple biasing of active analog circuitry to current-capacitor integrator reset and oscillator architectures. A convenient topology for implementing current sources and sinks utilizes a field effect transistor (FET) driven by an operational amplifier to produce a current from...
    • Aug 19, 2015

    Power Tips: The ground plane – a critical element in noise management of switching regulators

    Last month, I received a customer complaint about high-frequency spikes on the output of a DC/DC converter. I first reviewed the part’s schematic locations, and all of the necessary noise filtering was in place. High-quality input bypass caps were right at the power train, the correct main waveform snubber was in place, and the output had the...
    • Aug 18, 2015

    How to filter out noise in your DC/DC design

    After establishing a baseline on power-supply noise , let’s focus on post-filtering strategies of DC/DC converters while driving an analog-to-digital converter (ADC). For continuity with previous posts, I will again use the ADC3444 , a quad, 14-b...
    • Aug 17, 2015

    Lower EMI and quiet switching with the Fly-Buck™ topology

    My colleagues have written extensively about the Fly-Buck topology , but the details of the Fly-Buck’s soft/quiet switching characteristic haven’t been shared, which helps achieve higher efficiency, lower electromagnetic interference (EMI)...
    • Aug 14, 2015

    Save the transformers!

    Unfortunately, this is not insight into the upcoming fifth Transformers movie. This post is really about raising awareness of issues with LED lighting solutions. Worldwide, I see new buildings with LED bulbs flickering or just not working, as shown in this recent sighting at a popular pub in Hong Kong (Figure 1). Figure 1: MR16 bulbs at a restaurant...