Technical solutions, industry trends and insights for designing and managing power supplies.
    • Jan 29, 2015

    IoT’s impact on global power consumption comes down to standby

    Thought about the environmental impact of the Internet of Things (IoT) lately? Having spent years in the electronics industry, I find it increasingly rare that a news item generates a jaw-dropping response. But I admit, when I read that the G20 had ...
    • Jan 24, 2015

    Measuring PSR in an ADC

    In order to avoid power-supply noise compromising signal integrity in a signal-chain analog-to-digital converter (ADC), it is important to measure the power-supply rejection (PSR) of the ADC. This blog post will focus on explaining the techniq...
    • Jan 23, 2015

    Power Tips: Don’t let your power supply layout ruin your day!

    Have you designed a power supply only to find out later that your layout was inefficient? Follow these key tips to create a power supply layout and avoid the stress of debugging. 1. Layout of the power supply is crucial to the success of the design. Many times I have spent hours and sometimes days in the lab trying to figure out a noise issue...
    • Jan 21, 2015

    It is not just a PFC controller, it is also a power meter

    Real-time energy consumption measurement, including input real power, input RMS voltage and input RMS current measurement for off-line power supplies, is becoming more important nowadays. These measurements could be used to adjust power delivery and ...
    • Jan 19, 2015

    Which is simpler, selecting a Hot-Swap controller or its power MOSFET?

    I had company over to the house during the holidays and had to run to the store to pick up a few last minute items. Then I realized how many meanings there are for the three-lettered word “run”. I heard there are 645 meanings ...
    • Jan 13, 2015

    BOM-optimize your vacuum cleaner!

    In the consumer world with products, such as vacuum cleaners and white goods , the Bill of Materials (BOM) is extremely important. The broad array of products and companies designing those products create great competition—pressuring pro...
    • Jan 10, 2015

    Watt’s wrong with my LDO?

    Choosing something as simple as a linear regulator is often a lesson in thermal dynamics. The designer usually realizes their error after the design is on the bench. Or worse, the design fails in the field because a regulator is running beyond its temperature rating. With all the new features and specifications of new linear regulators, it is easy to...
    • Jan 8, 2015

    Power Tips: Construct a low cost bridgeless PFC with an analog controller – Part II

    In my last blog , I introduce semi-bridgeless PFC with standard PFC controller as a candidate of low cost, high efficiency PFC. This blog focus on key design considerations of semi-bridgeless PFC with an analog transition mode PFC controller. A stand...
    • Jan 6, 2015

    Start/Stop and Cold Crank Applications

    Written By: Martin Moss and Xiang Fang The heavy use of cars in high populated areas has cities looking into alternative transportation such as trains, buses or e-bikes. To keep up with environmental regulations and concerns, the automotive in...
    • Dec 27, 2014

    Power Tips: How to Maximize Efficiency in PoE and Telecom Supplies

    In Power-over-Ethernet (PoE) applications, high efficiency is a primary concern because input power is limited. Low-power systems are limited to 13W, while high-power systems are limited to 25.5 W. Telecom supplies which typically r...