Power House

  • My first switching power supply design was a 150W DC to AC inverter for automotive. It was in 1999; my manager stepped in the lab and gave me a nice looking metal box with a cigarette plug adapter at one end of it and AC outlet at the other end. He told...
  • A common concern in LED lighting has been keeping THD (Total Harmonic Distortion) below 10%. Power sources act as non-linear loads and draw a distorted waveform that contains harmonics. These harmonics can cause interference in the working of other electronic...
  • A major update of TINA-TI is now available for download. Version 9.1 includes new features requested by you, including 565 TI models. This version of TINA TI offers: Up to 5X speed increases over version 7.0 making power design and simulation...
  • How many times have you plugged a nearly dead phone into a charger only to get the message, “charging not supported with this accessory,” or something to that effect? What’s wrong? The connectors all fit. The USB cable works...
  • Let's talk about it! The Engineer It videos from Texas Instruments are instructional, how-to videos on a variety of technical topics. We've devoted this space to talk about a series of Engineer It videos devoted to testing power supplies. The...
  • I remember when I first started working with power management devices over 15 years ago. Quite frankly, I didn't even know what an ‘ LDO ’ was, or even a switching regulator for that matter, since those terms weren't covered in the...
  • As my buddy, Brian, mentioned in his blog , these days everyone carries a smart phone or tablet. They are necessary for business emails, personal calls and keeping up with the world. There is always a new craze in games, Angry Birds, Candy Crush, Words...
  • Previously, I posted part 1 and 2 of a 3 part series on how to test your power supply design: measuring efficiency (part 1) and measuring noise (part 2) . I covered various noise sources and how to properly measure them with an oscilloscope. I also discussed...
  • Power Optimizers have been introduced to the photovoltaic (PV) market in the past few years and proven that there is a viable market for distributed electronics in PV systems. As of early 2012, more than one million power optimizers from various manufacturers...
  • It is obvious to most that the smart phone and tablet era has changed almost everyone’s life. However, power supply designers may be the only that noticed manufacturers of these products have also revolutionized the AC/DC adapter. After all, nobody...