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EMC Consutancy & Design solutions
Francesco Poderico
Nov 283 min read
Conductive Emissions due to lack of Bulk Capacitors
In one of my previous blogs, I discussed the importance of adding common mode filtering to power cables. Nevertheless, even the best...
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Francesco Poderico
Nov 212 min read
The 1 GHz Ethernet emission
The following tips may be helpful if you're designing a solution that uses a 10/100 LAN Ethernet port. Some very common Ethernet PHY...
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Francesco Poderico
Nov 54 min read
EMC emission on clock line
Let's learn how to fix emissions due to clock lines. Over the course of my career, I have helped many companies resolve EMC issues. One...
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Francesco Poderico
Apr 303 min read
di/dt related EMI issues on Power supply
In terms of EMI, it is very difficult to have a product that is both efficient and low noise. Today I'd like to discuss some typical...
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Francesco Poderico
Feb 262 min read
Brackets on PCIE
Last year I worked with Cryptalab on the design of a quantum random number generator card. SSL/TSL experts know how important this is in...
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Francesco Poderico
Feb 193 min read
ESD precautions on battery powered devices
In my previous post, I explained why there are emissions in DC-DC converters that are insulated and how to minimize them. I have also...
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Francesco Poderico
Feb 72 min read
Emissions due to insulated power supply Part 3
As I mentioned in two previous posts, I have discussed the emission path of an insulated DCDC converter below the frequency of 80 MHz. It...
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Francesco Poderico
Feb 13 min read
Emissions due to insulated power supply Part 2
Hello again! The previous post demonstrated how an insulated DCDC converter can generate unwanted emissions at frequencies below 80 MHz....
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Francesco Poderico
Jan 293 min read
Emissions due to insulated power supply
As a matter of fact, it is quite common these days that we need some amount of insulation between our electronics and the outside world....
1,2040
Francesco Poderico
Jan 222 min read
Atomic Bomb proof Electronics
The 2023 was the busies time ever. Because of all the projects I had, I barely had time to write articles for EMC. In this year, I've...
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Francesco Poderico
Feb 15, 20233 min read
Some post design checking I do
The use of good ECAD is crucial to the design and development of high-quality electronic products. ECAD can provide a variety of...
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Francesco Poderico
Feb 12, 20232 min read
Conductive Immunity failure due to a two layers stack PCB
Over the last ten years, I have seen so many PCBs fail conductive immunity that I could write a book about it. In most cases, the errors...
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Francesco Poderico
Feb 1, 20232 min read
A note on Analog VDD
These days, we tend to encounter circuits with microcontrollers that incorporate AD/DA converters as a part of their design. As an...
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Francesco Poderico
Jan 24, 20233 min read
Radiated emissions due to split planes.
As part of my job, I have been analyzing PCB layouts that have been designed by third parties. Whenever I do this, it is interesting to...
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Francesco Poderico
Jan 11, 20233 min read
Conductive emissions issues due to rectifier diodes
There is a feeling in me that sometimes the old books are better than the new ones. As an example, a book by Hnatek called Design of...
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Francesco Poderico
Jan 9, 20232 min read
A PDN design note (bypass capacitors)
PDN design is not an easy task, and it can be challenging. One of the most common mistakes is to follow so-called "rules of thumb" that...
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Francesco Poderico
Jan 6, 20233 min read
Typical errors on Ribbon Cables
In today's world, ribbon cables are widely used as a way to interconnect PCBs with each other. They are low-cost and very easy to...
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Francesco Poderico
Jan 1, 20233 min read
Radiated Emissions by the heatsinks of microprocessors.
My current client has four heatsinks in his design, so in my solution, I'm designing some precautions to minimize emissions in the final...
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Francesco Poderico
Dec 31, 20222 min read
Criteria A, Criteria B and the Criteria C.
Back in the day, when testing was conducted for EMC, it was possible to perform tests, such as immunity tests, during which the device...
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Francesco Poderico
Dec 7, 20223 min read
CAN BUS protection.
The CAN interface is the most common BUS inside a car. Some years back, I was introduced to the CAN bus by a good friend of mine from...
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