Technical solutions, industry trends and insights for designing and managing power supplies.
    • Aug 22, 2017

    How to correctly layout a 40A power supply: copper, vias and loop path

    The demand for energy has gone up significantly but overall solution size continues to shrink. To adapt, you can decrease the size of a buck converter but it must still be able to handle the increasing power consumption in the electronic system. Optimizing the layout to increase the efficiency of the buck converter will result in less electricity needed...
    • Aug 16, 2017

    Extra tricks to increase battery life in IoT-enabled applications

    In my previous blog post, “ Power topology choices for power-hungry devices ,” I discussed power topology choices to help conserve battery life. Today, I want to discuss other ways to extend battery life for power-hungry designs, including different software improvements and device options. Depending on the end-equipment characteristics...
    • Aug 14, 2017

    Create a power supply for an MRI application

    Magnetic resonance imaging (MRI) uses a large magnet and radio waves to look at organs and structures inside your body. There are a number of challenging design requirements when designing a power supply for MRI applications. Because of the sensiti...
    • Aug 11, 2017

    Decoding power module derating curves

    As electronics get smaller and smaller, power-supply designers must consider thermal limits when designing their power supplies. A smaller power supply is not useful if it cannot operate at a heavy load inside a specific application environment, which includes the ambient temperature. One common thermal limit is represented in a derating curve, which...
    • Aug 10, 2017

    Another chance to catch the 2016/2017 Power Supply Design Seminar

    For nearly four decades, the Texas Instruments Power Supply Design Seminar has brought in-person training from power-supply experts directly to customers. For each seminar, we carefully choose topics under guidelines set by Bob Mammano. Ultimately, each topic selected must be useful, educational and interesting. We take pride in the fact that the...
    • Aug 9, 2017

    Power topology choices for power-hungry devices

    It is hard to choose a power topology for a wireless design when there are so many power-management integrated circuits (IC) out there. It may be hard to tell where to start, so I always start at the selection basics. The application of the design and onboard devices will determine the different voltage rails needed for operation. Consider a smart...
    • Aug 4, 2017

    Help! My power supply unit is unstable – part 2

    In the first installment of this series, I stated that there are many reasons for switched-mode power supply (SMPS) instability, only one of which is that the control loop has insufficient gain or phase margin. In this installment, I will offer some tips about identifying and curing subharmonic oscillations in peak current mode (PCM)-controlled SMPS...
    • Aug 3, 2017

    How to use a boost bypass as the pre-regulator in a smartphone

    A typical power source for a portable device like a smartphone is a single lithium-ion battery. With the development of silicon anode material and maximizing the battery energy as much as possible, the minimum operating voltage in a smartphone application for example, is usually lower, for instance 2.7V. Some load configurations, such as Wi-Fi®...
    • Aug 1, 2017

    Making a solar inverter more reliable than the sun

    Like most people on a wicked hot sunny day, all I can think about is how to beat the heat, which more often than not involves hiding in an air-conditioned room in my home. Later – on almost always a cooler day, with open windows – I’ll receive the electric bill and ask myself whether that temporary comfort was really worth it. The...
    • Jul 31, 2017

    Are you on-board? Demystifying EV charging systems

    Electric vehicles (EVs) are an unavoidable topic when discussing modern transportation. Coming from Germany, a country that takes pride in their automotive history, the EV market is growing fast. I would consider buying an electric car in the near future, as would many others. According to several forecasts, the market for EVs will increase dramatically...