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I am working on TIDM-02002, downloaded last CAD design files on the website
>> PMP21495 CAD Files 07 Mar 2019
when I try to check for DRC it shows many errors and missing nets.
I would like to know if the design files are correct or the files I have downloaded are old version not legitimate.
thanks
Yes, as far as I can tell those look to be the latest files. I have asked someone to look at this, but they are currently out of the office so responses will be delayed.
its possible that some of the waived violations came back after export, but I wouldn't expect missing nets.
Regards,
Cody
Hi,
Yes, Cody is right. The published files are the latest one. the missing nets (breaking connection?) might be related to the transformer? This is because we are using flying leads to connect transformer and PCB.
And actually there is a new hardware for TIDM-02002, which is PMP21999.
https://www.ti.com/tool/PMP21999
Regards,
Sheng-Yang Yu
Hi,
thanks Sheng,
I couple of a question related to the new design
1- about the full bridge modules "PMP22002" & "PMP22001" I can't find any information about them is there any reference design or datasheet for them?
2- about the gate drivers is there a reference design or datasheet for the boards used in the design.
thanks
Dear Shang,
My mistake about the design files of the bridge modules we found them already in the design folder three boards attached.
thanks
Dear Sheng,
we are trying to make the TIDM-02002 compatible with F28338D but we had one problem
TIDM-02002 uses "C2000 Microcontroller - TMS320F28004x" for control which have internal PGA, but "F28338D based MCU doesn't have internal PGA.
is there any problem to add small Gain hardware design rather than PGA connection, any consideration to take while making this design.
thanks
1- Is there any pdf or user guide related to the full design of the new hardware design files "PMP21999", also we couldn't find pdf files for the two modules used in it "PMP22002" & "PMP22001".
2- about "PMP22002" what is the purpose of making the board in 2 parts and connect with them outside the PCB, in the old hardware design "PMP21495" you were using the "PMP21561" and all tracks connected through the main board.
Ahmed, you can certainly add gain amplifiers to replace the PGAs. As for your other questions perhaps Sheng-yang Yu1 can comment.
Regards,
Cody
Thanks Cody for your response,
about PGA in the design you are using Kelvin connection between "GND & RTN" for current sensing on PGA pin.
is there any constrain about it for using external hardware gain amplifier? and what is the required gain for it to work on normal ADC Pin.
There is no requirement from our ADC on how you route signals from the detection point to an external gain amplifier. Kelvin grounds can be used to help reject some common mode noise... But in any case I would recommend you follow the datasheet for the gain amp.
Regards,
Cody
Thanks Cody for your response,
I have another technical question about isolation between both sides of the transformer
in the design you are using two separated 5V sources for primary and secondary.
can we use one 5V source for power up the Board?
will it make big difference in results or the performance and efficiency will be the same?
Ahmed,
If I've understood your question this 5Vp an 5Vs is there to keep the primary and secondary sides isolated from one another. Using one 5V source would be a potential weak point in the isolation scheme, right?
Regards,
Cody
Ahmed,
Making two separated PCB because we have C2000 MCU at primary side, one driver doesn't need isolation (PMP22001) and the other one needs isolation (PMP22002). PMP22001 and PMP22002 was placed under mainboard closed to FETs for a shorter driving loop.