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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EMC Consutancy & Design solutions
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...
749 views0 comments
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...
299 views0 comments
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...
565 views0 comments
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...
356 views0 comments
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....
575 views0 comments
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....
1,202 views0 comments
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...
796 views0 comments
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...
888 views0 comments
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...
1,423 views0 comments
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...
607 views0 comments
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...
488 views0 comments
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...
334 views0 comments
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...
1,676 views7 comments
Francesco Poderico
Dec 4, 20224 min read
Cable length strategy during radiated emissions.
Radiated emissions from a product don't always turn out the way we want. And having a plan for troubleshooting emissions when they exceed...
1,470 views0 comments
Francesco Poderico
Nov 30, 20222 min read
Common mode coupling mechanism on AC/DC converter.
In a previous article, I discussed the common mode coupling on the PoE (Power Over Ethernet) DCDC converter that I discussed a few months...
1,015 views0 comments
Francesco Poderico
Nov 27, 20222 min read
EMC issues due to optoisolators.
EMC is considered by many to be a "black magic" for a number of reasons. In some cases, it may be the case that you obtain unexpected...
1,492 views0 comments
Francesco Poderico
Nov 11, 20223 min read
Diodes and operational amplifier from an EMC perspective.
Those of you who are reading my post know that there is not much 'black magic' behind EMC and that there is always an explanation for why...
227 views0 comments
Francesco Poderico
Nov 11, 20222 min read
Some analysis I do when I design a DCDC converter. (Part 4)
As we have seen in parts 1, 2, and 3, the input current loop of a DCDC converter affects both conductive and radiated emissions....
130 views0 comments
Francesco Poderico
Nov 11, 20223 min read
Some analysis I do when I design a DCDC converter. (Part 3)
In the process of creating a new product from scratch, I always add components that I may not need in production when I am designing it....
98 views0 comments
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