Best way to place/mount temperature sensors to optimize thermal conductivity an App note from Silicon Labs. Link here (PDF) The Si70xx temperature sensors work by measuring the Vbe of an on chip transistor at two currents in a precise ratio to measure temperature. The resulting voltage is digitized, calibrated and linearized such that after conversion […]
Tag Archives: PCB design
App note: Method of suppressing increase in surface temperature of shunt resistors
App note from ROHM Semiconductor about their shunt resistor mounting designs to keep heat away. Link here (PDF) Shunt resistors are widely used for current sensing in automotive and industrial applications. In the automotive sector, as vehicles become more complex and the number of motors and ECUs grows, applications need to be configured in a […]
App note: Effect of PCB design on temperature coefficient of resistance
App note from ROHM Semiconductor on the importance of sense trace/line arrangement on PCB designs. Link here (PDF) While resistance, power rating and size are important considerations when using shunt resistors, tolerances that affect the accuracy of the detected voltage must also be considered. These tolerances include the temperature coefficient of resistance and the tolerance […]
App note: PCB Design Guidelines for QFN and DQFN Packages
Efficiently design your PCB involving QFN or DQFN packages with this App note from Microchip. Successful implementation of QFN and DQFN packages requires special consideration for printed circuit board (PCB) layout and solderpaste stencil production. This application note describes the important items to consider. QFN packages are physically robust, thermally efficient, and occupy much less […]
TI: parasitic effects and PCB design
Wedecon Electronic Design located this post on the Texas Instruments blog highlighting the problems presented in PCB design by parasitic effects caused by rapid high current transients and high frequencies. You can view the post Everything is Part of the Circuit on the TI blog. Via the contact form.
App note: Need for power and ground cleanliness
Some tips and tricks on how to reduce noise on PCB power and ground traces. It warns digital engineers that the analog nasties are lurking in power supplies, and can cause unexpected surprises for inexperienced PCB designers. Many times electronic system failures are blamed on the parts when the real cause was human error. […]
App note: One serial EEPROM footprint to rule them all
Microchip describes how to make CAD footprints that fit several different sizes of serial EEPROM data storage chips. This gives your project flexibility in case the larger footprints can no longer be sourced: For many years, the 8-lead SOIC package has been the most popular package for serial EEPROMs, but now smaller packages are becoming […]
App note: PCB design perfection starts in the CAD library
This 19 part tutorial shows how to design CAD library parts that make PCB design easier. Part one is a white paper, while the other parts are written as editorials on his blog. If you are serious about building up a part library this is definitely worth a look. The CAD library is the starting […]