Technical solutions, industry trends and insights for designing and managing power supplies.
    • Jun 28, 2018

    A review of EMI standards, part 1 – conducted emissions

    In general, electrical products must meet some type of electromagnetic interference (EMI) performance metric, whether established in the product’s design specifications or to comply with regulatory requirements. It’s important to take int...
    • Jun 26, 2018

    The sound of GaN

    High-fidelity (hi-fi) audio is becoming more and more popular among music fans and movie buffs, from portable speakers to high-end, in-home audio to automotive systems. And from the A to Z of classifications for audio power amplifiers, Class-D amplif...
    • Jun 23, 2018

    FPGA power design challenges: Can I use a PMIC for that?

    System designers gain three benefits when designing systems with a field-programmable gate array (FPGA): reprogrammability, performance scalability and fast time to market. But there are also challenges that designers must overcome. In this post, I w...
    • Jun 20, 2018

    LDO Basics: Quiescent Current 101

    How aggravating is it to pick up an electronic device that you’ve barely used, only to find that the battery is nearly or completely dead? If your device was just on standby or asleep, this may have happened because of a small but crucial speci...
    • Jun 8, 2018

    Understanding valley current limit

    The concept of current limit seems pretty straightforward: when you increase the output current of a DC/DC converter, at a certain point it’s not possible to increase it any further. This level is the current limit, which naturally leads to the idea that the current is limited at some particular peak or maximum level. With this in mind, the...
    • Jun 6, 2018

    The new PoE standard: It’s almost here

    This July will mark six years since the beginning of the journey for IEEE 802.3bt, the IEEE standards project that will standardize 4-pair Power over Ethernet (PoE). I began preparing for the standard when I attended my first IEEE standards meeting ...
    • May 30, 2018

    How to achieve higher system robustness in DC drives, part 2: interlock and deadtime

    While commuting to work, waiting for a traffic light I noticed the green and red light sequence that prevents traffic flow conflicts, or crashes. The crossing traffic directions are out of sequence to ensure safe driving. Also the yellow gives a litt...
    • May 29, 2018

    Why you need a programmable lighting engine when designing LED driver circuit

    Advanced light-emitting diode (LED) animation effects like “deep breathing” and “color chasing” are becoming increasingly popular. However, a common issue designers’ face is that the microcontroller (MCU) is overloaded b...
    • May 24, 2018

    Boosting efficiency for your solar inverter designs

    With summer upon us here in the U.S., I’m already thinking about beach days and poolside BBQs. Growing up in South Florida and currently living in Texas, I’m very familiar with hot and sunny days. Similarly, I’ve gotten used to rece...
    • May 23, 2018

    Optimizing solar power with battery chargers

    As solar-powered devices become more portable and interconnected, rechargeable batteries eliminate the need for AC adapter input power and take advantage of the abundant energy from the sun. For example, devices such as e-bikes and Internet Protocol network cameras spend most of their time outside and away from power outlets, making solar charging...