Technical solutions, industry trends and insights for designing and managing power supplies.
    • Sep 2, 2015

    Avoid noise pollution in Hi-Fi systems with low-noise power supply

    High-fidelity (Hi-Fi) audio is a combination pure and harmonic sounds, so captivating that the listener is transported to a higher level of bliss and happiness. Thanks to technological advances the Hi-Fi experience is becoming widely available in por...
    • Sep 1, 2015

    Designing a digital power supply: How to write firmware

    In part 1 of this blog series , I talked about how to design a digital power supply using Texas Instruments' UCD3138 as an example and focusing on the hardware design. In this installment, I’ll explain how to write firmware to make it work. Firmware Unlike analog power-converter design, which controls everything by hardware, the firmware...
    • Aug 31, 2015

    What is behind isolated DC/DC converter voltage regulation?

    Power supply designers often use isolated DC/DC converters to realize galvanic isolation, meet safety requirements and enhance noise immunity. When designing an isolated DC/DC converter, output voltage regulation accuracy is one of many design object...
    • Aug 31, 2015

    Power Tips: What’s the best way to drive synchronous rectifiers in a flyback supply?

    There are numerous techniques for driving synchronous rectifiers (SRs) in a flyback topology: using a gate-drive transformer, having the power transformer self-drive the SR, or using a specialized driver. The gate-drive transformer and self-driven techniques result in less-than-optimal efficiency due to either shoot-through or reverse-recovery losses...
    • Aug 29, 2015

    Designing for isolated DC/DC converter shunt safety

    Did you know that your shunt regulator is in danger? No? Don’t worry – the fix is free. Free is good. A very common feedback circuit used in isolated DC-to-DC converter applications uses a shunt regulator such as the ATL431 and an optical...
    • 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 witho...
    • 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...