Here is a video from Texas Instruments describing how to test DC-DC power supplies. Measurement of ripple and transient noise of switching power supplies is described in detail.
Tag Archives: app note
Here’s a tutorial from Maxim on how to design smarter LED lighting. How smart is your LED lighting system? While LED lighting holds the promise of reducing energy consumption and maintenance costs, smart LED lighting designs improve system performance … Read more
Here’s an application note from Atmel on PCB mounting guidelines for surface mount devices. The article describes a multitude of tips on how to improve the reflow rate of production boards designed with SMT components.
Here is an application note from Microchip describing how to get maximum power out of a solar panel. The focus of this application note is to identify how to get the maximum power out of a solar panel to power … Read more
A video tutorial on the benefits and pitfalls of using aluminum electrolytic capacitors. Learn how these capacitors degrade, and how their life cycle is proportional to the stresses you put them through.
Here’s a series of video tutorials on filtering from Analog Devices. First in the series (embedded above) covers simple single pole filters made out of resistors and capacitors. The series moves onto active filtering with op-amps, and finishes with multi-pole … Read more
Texas Instruments goes over regulator output-voltage accuracy, warning that feedback resistor tolerances have a high impact on the output accuracy and should be chosen with care.
A part presentation from the Electronic City blog describes the SCT2024 16 channel LED driver with programmable current output and a serial control interface. SCT2024 integrated circuit is a serial-parallel interface for LEDs with the programming and the limiting of … Read more
As with all electronics components capacitors can never be ideal, there are always parasitic components that have to be considered as well. With capacitors the most prominent parasitics are Equivalent series resistance (ESR), and Equivalent series inductance (ESl). The video … Read more
The MCP19111 enhanced power analog controller is a 1.2 MHz buck controller with an integrated PIC12F inside. It features programmable coil current limit, over and under voltage protection, adjustable feed back loop, as well as up to 12 GPIOs.
EDN Network covers the design of a very low voltage boost converter. The circuit in question is an LED flashlight designed to power 2 LEDs from voltages as low as 0.5V. The circuit uses an integrated constant current boost converter … Read more
Here’s’ a video tutorial from Linear Technology describing how to design a simple flyback DC/DC converter. The video promotes the use of LT’s LT3573 IC, but it also provides information that could be applied to other designs as well. Isolated … Read more
Here’s a tutorial from Maxim describing the differences between switch mode, linear, and pulse Li Ion battery chargers. Advantages and disadvantages of each are covered by the article. There are three methods to charging Li+ batteries: switch-mode, linear and pulse. … Read more
Here’s a video tutorial on how to reball BGA devices. First you’ll need to remove the IC, and clean up the leftover solder from the IC and the board. Next step is to place the ball grid template over the … Read more
Here’s a web video series from Analog Devices describing thermocouples (TC) and how to get the most out of them. TC is a temperature sensor that outputs a voltage dependent on the temperature difference between these two ends.
Here’s a tutorial on output current capability of DC-DC buck converters that output a lower voltage from an input voltage. The article outlines the theory of buck converters, and how to calculate output current: Due to the widespread availability of … Read more
We often use the peripheral pin select (PPS) feature of PIC24F devices. This feature gives you the option to map some peripherals onto many different pins, instead of being locked onto specific pins. Here’s the reference manual for PPS. Most … Read more
Here’s a tutorial from On Semiconductor describing noise that comes with inductor based DC-DC convertors. The article highlight the key areas where noise is generated in such systems, and provides suggestions on how to tackle them. The main purpose of … Read more
While it doesn’t matter what direction non-polarized capacitors are soldered into a circuit, some feature a stripe indicating which contact is connected to the outer shell of the capacitor. The article describes how to best take advantage of this in … Read more
Here’s an app note from Microchip describing how to use USB flash devices with microcontrollers that have USB host capability. The article also provides instructions on how to use the USB OTG Configuration tool. This document describes the USB Data … Read more